Gallery
61 diagrams
Every topology, plumbing schematic, signal-flow and hex-dump diagram in the manual, lifted out of the prose and shown here. Click any card to jump to the chapter that explains it.
/ 1 / ME7.5 / 120 / 4013.00 / / 24B / Dst05o / 240402 /
Ch 02 · Bosch Project Taxonomy
/ 1 / ME7.5 / 120 / 4013.00 / / 24B / Dst05o / 240402 /
─┬─ ──┬── ─┬─ ───┬─── ─ ─┬─ ───┬── ───┬──
│ │ │ │ │ │ └─ G. Build Date (YYMMDD)
│ │ │ │ │ └─ F. Dataset Stand & Role
│ │ │ │ └─ E. Generational Project Code
│ │ │ └─ D. Base Software Version
│ │ └─ C. Memory Size / Hardware Configuration (120 = 1024KB)
│ └─ B. ECU System Family
└─ A. Variant IndexVOLKSWAGEN AG Made in Germany
Ch 02 · Bosch Project Taxonomy
┌─────────────────────────────────────────────────────────────┐ │ VOLKSWAGEN AG Made in Germany │ │ │ │ 06A 906 032 LP BENZIN ME7.5 0005 ── (1) VAG Part No │ │ 0 261 207 955 1037366194 ── (2) Bosch HW/SW │ │ 26SA0000 1120 0402 ── (3) Date Code │ └─────────────────────────────────────────────────────────────┘
BOSCH ME7.5 CALIBRATION CLUSTERS
Ch 03 · Benchmark Calibrations
┌─────────────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7.5 CALIBRATION CLUSTERS │ ├────────────────────────────────┬───────────────────────────────────────┬────────────────────────────────┤ │ 24B Modern High-Output Cluster │ 24B Mature Transverse Cluster │ 22i Euro 3/4 Cluster │ │ • 06A906032LP (h24bw05g) │ • 06A906032HS (h24bo08g) │ • 06A906032CL (i22ic04g) │ │ • 06A906032JJ (h24bw05g base) │ • 06A906018HS (h24bo08g base) │ • 06A906032CM (k22ic05g) │ │ • 06A906032PL (h24bw05g base) │ • 06A906032HN (F24C202g) │ • 06A906032DK (A24bd01g) │ │ • 06A906032SK (h24bw05g base) │ • 06A906032DL (I24bh04g - 180PS AUQ) │ │ └────────────────────────────────┴───────────────────────────────────────┴────────────────────────────────┘
Pressure (hPa)
Ch 03 · Benchmark Calibrations
Pressure (hPa)
▲
4000 ┼─────────────────────────────────────────────● Bosch 4.0-bar (0281002576)
│ / DSLGRAD = 875.0, DSLOFS = +62.5
3000 ┼──────────────────────────────● / Bosch 3.0-bar (0281002401)
│ / / DSLGRAD = 658.8, DSLOFS = -63.5
2500 ┼───────────────● / / Stock 2.5-bar (0261230073)
│ / / / DSLGRAD = 574.7, DSLOFS = -23.5
│ / / /
200 ┼──●─────────/────────────/────────────/
│ │ │ │ │
└──┴────────┴────────────┴────────────┴──────► Output Voltage (V)
0.4V 4.65V 4.65V 4.50VDiagnostic Tester (Host) Bosch ME7.5 ECU
Ch 05 · Cross-Flash Clusters
Diagnostic Tester (Host) Bosch ME7.5 ECU
│ │
│ ──── 1. Service $27 01 (Request Seed) ──────────► │
│ │
│ ◄─── 2. Service $67 01 [Seed: S0 S1 S2 S3] ────── │
│ │
│ [ Compute Key: K = f(Seed, Secret_Mask) ] │
│ │
│ ──── 3. Service $27 02 [Key: K0 K1 K2 K3] ──────► │
│ │
│ ◄─── 4. Service $67 02 (Security Access OK) ───── │
│ [ Flash Erase / Write Services Unlocked ] │Offset 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F ASCII
Ch 06 · Memory Geometry & Axes
Offset 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F ASCII ───────────────────────────────────────────────────────────────────────────── 0x0001208E: 48 48 48 49 4B 4E 52 56 5A 5E 62 66 69 6C 6F 72 HHHIKNRVZ^bfilor <-- Row 0 (rl = 10%) 0x0001209E: 46 46 47 48 4A 4D 50 54 58 5C 60 64 67 6A 6D 70 FFGHJMPTX``dgjmp <-- Row 1 (rl = 15%) 0x000120AE: 42 42 43 45 47 4B 4E 52 56 5A 5E 62 65 68 6B 6E BBCGEKNRVZ^behkn <-- Row 2 (rl = 20%) ... 0x0001214E: 20 20 21 23 25 28 2B 2F 33 37 3B 3F 43 46 4A 4E !#%(+/37;?CFJN <-- Row 11 (rl = 115%)
Offset 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F Header & Breakpoints
Ch 06 · Memory Geometry & Axes
Offset 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F Header & Breakpoints ───────────────────────────────────────────────────────────────────────────── 0x00015088: 10 00 10 00 00 00 14 05 28 0A 3C 0F 50 14 64 19 X-Len, Y-Len, X-Axis [0..5] 0x00015098: 78 1E 8C 23 A0 28 B4 2D C8 32 DC 37 F0 3C FF 3F X-Axis Breakpoints [6..15] 0x000150A8: A0 0F C0 12 E0 15 00 19 40 1F 80 25 C0 2B 00 32 Y-Axis Breakpoints [0..7] 0x000150B8: 40 38 80 3E C0 44 00 4B 80 54 00 5E 80 67 00 70 Y-Axis Breakpoints [8..15] ───────────────────────────────────────────────────────────────────────────── 0x000150CC: 00 00 12 01 24 02 36 03 48 04 5A 05 6C 06 7E 07 <-- RAW DATA PAYLOAD BEGINS (+68)
BOSCH ME7.5 MAIN FLASH MULTI-TIER CHECKSUM ARCHITECTURE
Ch 11 · Flash Checksum Hierarchy
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7.5 MAIN FLASH MULTI-TIER CHECKSUM ARCHITECTURE │ ├────────────────────────────────┬────────────────────────────────┬────────────────────────────────┤ │ Tier 1: 16-Bit Additive Sums │ Tier 2: Complement Pairs │ Tier 3: Bosch CRC32 / CRC16 │ │ • Multipage 16-bit blocks │ • Paired inverse 16-bit words │ • Cyclic redundancy polynomials│ │ • Calculated per memory bank │ • Word_A + Word_B = 0xFFFF │ • Blocks 0x01FBxx & 0x07FBxx │ │ • Stored in checksum headers │ • Immediate startup validation │ • Full flash segmentation sync │ └────────────────────────────────┴────────────────────────────────┴────────────────────────────────┘
Offset in Flash Field Name Data Type Description
Ch 11 · Flash Checksum Hierarchy
Offset in Flash Field Name Data Type Description ───────────────────────────────────────────────────────────────────────────────────────────── Entry + 0x00 Start Address u32 (LE) Physical flash start offset Entry + 0x04 End Address u32 (LE) Physical flash end offset (inclusive) Entry + 0x08 Stored Checksum u16 (LE) Calculated 16-bit expected sum Entry + 0x0A Checksum Type / Flags u16 (LE) 0x0001 = Additive, 0x0002 = CRC32
BOSCH ME7.5 121-PIN DUAL-CHAMBER CONNECTOR ARCHITECTURE
Ch 13 · 121-Pin Harness
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7.5 121-PIN DUAL-CHAMBER CONNECTOR ARCHITECTURE │ ├────────────────────────────────────────────────┬─────────────────────────────────────────────────┤ │ Chamber A: 81-Pin Engine Harness (Pins 1–81) │ Chamber B: 40-Pin Body Harness (Pins 82–121) │ │ • Injectors, Ignition, Lambda LSU 4.2, Sensors │ • Power, Ground, CAN Bus, K-Line, Pedal, Relays │ └────────────────────────────────────────────────┴─────────────────────────────────────────────────┘
Factory B_10ms Execution Path:
Ch 14 · Code Hooks & Patching
Factory B_10ms Execution Path: ┌──────────────────┐ ┌──────────────────────┐ ┌────────────────────┐ │ Read nmot_w │ ────► │ Compare nmot >= nmax │ ────► │ Spark/Fuel Cut │ │ (RAM 0x380A90) │ │ (Flash Scalar 0x11314)│ │ if over threshold │ └──────────────────┘ └──────────────────────┘ └────────────────────┘ Patched Execution Path with Code Hook: ┌──────────────────┐ ┌──────────────────────┐ ┌────────────────────┐ │ Read nmot_w │ ────► │ CALLS 0x01, 0xDF00 │ ────► │ Evaluate Launch, │ │ (RAM 0x380A90) │ │ (Hook to Code Cave 1)│ │ NLS, or Factory Lim│ └──────────────────┘ └──────────────────────┘ └────────────────────┘
Dead Time (ms)
Ch 15 · Injector Mathematics
Dead Time (ms)
▲
3.5 ┼──● Bosch EV6 (Stock AWP)
│ 2.5 ┼────●
│ 1.5 ┼──────●────● Bosch EV14 550cc
│ \ 0.8 ┼────────●────●────●
│ \ \ └──┴──┴───┴────┴────┴────► Battery Voltage (V)
6V 8V 10V 12V 14V 16VBOSCH ME7.5 TORQUE-BASED CONTROL & SAFETY MONITORING ARCHITECTURE
Ch 16 · Torque Model & Inversion
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7.5 TORQUE-BASED CONTROL & SAFETY MONITORING ARCHITECTURE │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ DRIVER INPUT │ │ Pedal Position (wped_w) │ │ │ │ │ ▼ │ │ [ KFPED Driver Request ] │ │ │ │ │ ▼ │ │ TORQUE COORDINATION (Arbitration of Internal & External Demands) │ │ • Cruise Control (misolv) • Traction Control (ASR) │ │ • Idle Speed Control (DMLLR) • Transmission Shift Intervention │ │ │ │ │ ▼ │ │ Target Indicated Torque (misolv) │ │ │ │ │ ┌────────────────────┴────────────────────┐ │ │ ▼ ▼ │ │ [ KFMIRL Target Load ] [ ELECTRONIC MONITORING ] │ │ Torque + RPM ──► Target Load (rlsol) Compares Actual vs Commanded Torque │ │ │ ▲ │ │ ▼ │ │ │ Throttle & Boost Control [ KFMIOP Actual Torque ] │ │ Actuates Throttle (DK) & N75 Wastegate Actual Load (rl) + RPM ──► Actual Torque │ │ │ │ │ │ ▼ ▼ │ │ ENGINE COMBUSTION ──────────────────────► SAFETY COMPARATOR │ │ Cylinder Air Filling (rl) If Actual > Commanded: LIMP MODE │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
BOSCH ME7.5 LDR CLOSED-LOOP BOOST CONTROL TOPOLOGY
Ch 17 · Boost Control & LDR PID
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7.5 LDR CLOSED-LOOP BOOST CONTROL TOPOLOGY │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ Target Load (rlsol) ──────────────────┐ │ │ Engine Speed (nmot) ──┐ │ │ │ ▼ ▼ │ │ [ KFLDRL Feedforward Linearization ] │ │ │ │ │ ▼ Base Open-Loop Duty Cycle │ │ ┌───────────┐ │ │ │ Sum (+) │ ◄──────────┐ │ │ └─────┬─────┘ │ PID Correction │ │ │ │ (LDRQ0, LDRQ1, LDRQ2) │ │ ▼ │ │ │ [ KFLDIMX Clamp Limit ] │ │ │ │ │ │ │ ▼ Final N75 Duty │ │ │ Wastegate Solenoid (N75) │ │ │ │ │ │ │ ▼ │ │ │ Turbocharger Actuator │ │ │ │ │ │ │ ▼ │ │ │ Actual Boost (MAP G31) ──────┴──► Error: Delta P = (P_sol - P_ist) │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
CYLINDER-SELECTIVE KNOCK RETARD & DECAY DYNAMICS
Ch 18 · Knock Control & BTS
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ CYLINDER-SELECTIVE KNOCK RETARD & DECAY DYNAMICS │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ Ignition Angle │ │ ▲ │ │ Base ┼────────────────────────┐ ┌─────────────────── Base Advance │ │ │ │ │ │ │ │ Knock Event! │ DWKSTE (-3.0°) │ DWKREC (+0.75° / 20 cycles) │ │ │ ┌────────────┐ ▼ ▲ │ │ │ │ │ ┌─────────────────────────────┘ │ │ │ │ │ │ Hold Dwell Window │ │ │ ▼ │ │ │ │ Ret ┼───────────────────┴────┴─────────────────────────────────────────► Engine Cycles │ │ │◄───── Normal ─────►│◄─── Retarded ────►│◄────── Recovery ───────►│ │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
C167CR HARDWARE BOOTSTRAP LOADER (BSL) RECOVERY TOPOLOGY
Ch 20 · Bench Flashing & BSL
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ C167CR HARDWARE BOOTSTRAP LOADER (BSL) RECOVERY TOPOLOGY │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ 13.5V DC Bench Power Supply │ │ ┌───────────────────────┴───────────────────────┐ │ │ ▼ Ground (0V) ▼ +13.5V Regulated │ │ ECU Pins 1 & 2 ECU Pin 21 (Perm Battery) │ │ │ │ │ │ │ ▼ Switch S1 (Ignition) │ │ │ ECU Pins 3 & 62 │ │ │ │ │ ▼ 1 kΩ Resistor │ │ [ AMD AM29F800BB Pin 24 ] ──► Grounds POL.4 on C167 during Power-On │ │ │ │ │ ▼ │ │ C167 BSL Mode Engaged! ──► Bypasses Corrupted Flash ROM │ │ │ │ │ ▼ K-Line (Pin 43) │ │ FTDI USB-to-K-Line Interface ──► Transmits RAM Loader & Flashes 1024 KB Binary │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
BOSCH ME7.5 DUAL-POTENTIOMETER CROSS-CHECK SAFETY GEOMETRY
Ch 22 · E-Gas Throttle Control
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7.5 DUAL-POTENTIOMETER CROSS-CHECK SAFETY GEOMETRY │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ Voltage (V) │ │ ▲ │ │ 5.0V ┼──────────● (G188 Rest) ● (G187 WOT) │ │ │ \ / │ │ 4.5V ┼────────────● ● │ │ │ \ / │ │ │ \ / │ │ 2.5V ┼───────────────X───────── Mid-Point Intersection ─────────X │ │ │ \ / │ │ │ \ / │ │ 0.5V ┼──────────────────● ● │ │ │ ● (G187 Rest) ● (G188 WOT) │ │ 0.0V ┼───┴───────────────┴─────────────────────────────────┴───────────────────► Throttle Angle │ │ 0° (Mechanical Lower) 82° (Full WOT) │ │ │ │ Continuous Safety Sum: V(G187) + V(G188) = 5.00V ± 0.20V across 100% of plate travel │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
VAG DRIVETRAIN CAN BUS TOPOLOGY (500 KBPS DIFFERENTIAL)
Ch 23 · Drivetrain CAN Bus
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ VAG DRIVETRAIN CAN BUS TOPOLOGY (500 KBPS DIFFERENTIAL) │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ [ CAN-High: Pin 58 ] │ │ [ CAN-Low: Pin 60 ] │ │ │ │ │ ┌───────────────────────┬─────────────┴─────────────┬────────────────────────┐ │ │ ▼ ▼ ▼ ▼ │ │ Engine ECM (J220) Instrument Cluster (J285) ABS/ESP Module (J104) Haldex AWD (J492) │ │ • Broadcasts 0x280 • Translates to K-Line • Broadcasts Wheel Spd • Reads Torque │ │ • Broadcasts 0x288 • Drives Temp & Tach • Commands Torque Cut • Manages Multi- │ │ • Broadcasts 0x480 • Calculates MFA/FIS MPG • Reads Brake Switch • Plate Clutch │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
REAL-TIME FLEX-FUEL DYNAMIC BLENDING TOPOLOGY
Ch 24 · Flex-Fuel / Ethanol
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ REAL-TIME FLEX-FUEL DYNAMIC BLENDING TOPOLOGY │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ [ Continental / GM Digital Ethanol Sensor (13577429) ] │ │ • Plumbed into fuel return line │ │ • Frequency Output: 50 Hz (E0) to 150 Hz (E100) │ │ │ │ │ ▼ Pulse Signal │ │ ECU Pin 54 / Pin 116 (C167 CAPCOM Timer Channel) │ │ │ │ │ ▼ │ │ [ Custom C167 Interrupt Service Routine in Code Cave 2 ] │ │ Calculates: Ethanol Fraction Alpha = (Frequency - 50) / 100 │ │ │ │ │ ▼ Alpha Blend Factor [0.0 to 1.0] │ │ ┌────────────────────────────┼────────────────────────────┐ │ │ ▼ ▼ ▼ │ │ [ Primary Fueling ] [ Dynamic Boost Limit ] [ Ignition Angle Advance ] │ │ KRKTE_active = LDRXN_active = KFZW_active = │ │ KRKTE_gas + LDRXN_gas + KFZW_gas + │ │ (Alpha * Delta_Fuel) (Alpha * Delta_Boost) (Alpha * Delta_Advance) │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
[ Engine Cranks, Will Not Start ]
Ch 25 · Troubleshooting & Failsafes
[ Engine Cranks, Will Not Start ]
│
┌─────────────────────────┴─────────────────────────┐
▼ ▼
Does VCDS Connect to ECU? VCDS Cannot Connect
│ │
┌─────────┴─────────┐ Check Bench / Car Wiring:
▼ ▼ • Pin 1 & 2: Ground (< 0.2V drop)
Yes (Online) No (Offline) ─────────────────────► • Pin 21: Constant 12V Battery
│ • Pin 62: Switched 12V Ignition
▼ • Pin 3: Relay J271 Terminal 87
Check DTC Codes: • Pin 43: K-Line Voltage (> 11.5V)
• P1570 / 17978 (Immobilizer Locked):
--> EEPROM bytes 0x0012 & 0x0022 must be set to 0x02.
--> Fix EEPROM page checksums with me7_eeprom_fixer.py.
• No DTCs Stored? Check Engine Speed Signal:
--> Log Measuring Block 001, Field 1 during cranking.
--> If RPM reads 0 rpm: Crank Sensor (G28) failure on Pins 82 & 90.
(Sensor resistance across pins 1 & 2 must be 730 Ω to 1000 Ω).[ Throttle Limp Mode (EPC Illuminated) ]
Ch 25 · Troubleshooting & Failsafes
[ Throttle Limp Mode (EPC Illuminated) ]
│
┌─────────────────────────┴─────────────────────────┐
▼ ▼
Potentiometer Correlation Error Torque Monitoring Error
(DTC P1545 / P1559 / P1564) (DTC P1176 / P1297)
│ │
• Check Measuring Block 062: • Cause: KFMIRL and KFMIOP Asymmetry.
Field 1 (G187) + Field 2 (G188) must = 100%. • When load target was raised, actual
At closed throttle: G187 ~12%, G188 ~88%. torque exceeded the safety boundary.
At WOT: G187 ~88%, G188 ~12%. • Solution:
• If sum deviates: Run me7_torque_inverter.py to generate
1. Inspect wiring harness for pin chafing. a mathematically symmetrical KFMIOP
2. Perform Basic Settings Group 060. inverse surface.BOSCH LSU 4.2 & CJ125 CLOSED-LOOP PUMP CELL CIRCUIT TOPOLOGY
Ch 26 · Wideband O2 & CJ125
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH LSU 4.2 & CJ125 CLOSED-LOOP PUMP CELL CIRCUIT TOPOLOGY │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ [ EXHAUST GAS STREAM ] │ │ │ │ │ ▼ Diffusion Barrier │ │ ┌─────────────────────────────────────────────┐ │ │ │ Internal Diffusion Gap (Cavity) │ │ │ └──────┬───────────────────────────────┬──────┘ │ │ │ │ │ │ ▼ ▼ │ │ [ Electrochemical Pump Cell ] [ Nernst Concentration Cell ] │ │ │ │ │ │ Pump Current (Ip) Nernst Voltage (Up) │ │ Maintains Up = 450 mV Target: Equilibrium at λ=1.0 │ │ │ │ │ │ ┌────────────────────────┴───────────────────────────────┴────────────────────────┐ │ │ ▼ ▼ │ │ ECU Pin 52 (Ip+) ECU Pin 70 │ │ ECU Pin 51 (Ip- / Vm = 2.5V Virtual Ground) (Up Signal) │ │ │ │ │ │ └────────────────────────► [ Bosch CJ125 ASIC ] ◄─────────────────────────────────┘ │ │ │ │ │ ▼ Amplified Current Voltage (UA / UR) │ │ C167CR Microcontroller (ADC Channel AN0) │ │ Linearized via KFNL to Actual Lambda (lamsoni_w) │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
FACTORY 1.8T N249 ELECTRO-PNEUMATIC PLUMBING TOPOLOGY
Ch 27 · Diverter Valve N249
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ FACTORY 1.8T N249 ELECTRO-PNEUMATIC PLUMBING TOPOLOGY │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ [ Intake Manifold Vacuum ] │ │ │ │ │ ▼ One-Way Check Valve │ │ [ Plastic Vacuum Reservoir ] │ │ │ │ │ ▼ │ │ ┌─────────────────────────────────────────────┐ │ │ │ N249 3-Port Solenoid (ECU Pin 64) │ │ │ └──────┬───────────────────────────────┬──────┘ │ │ │ │ │ │ De-Energized State │ │ Energized State (Active Low) │ │ Connects to Intake │ │ Connects to Vacuum Reservoir │ │ Manifold Reference │ │ Opens DV under positive │ │ │ │ manifold boost pressure! │ │ └───────────────┬───────────────┘ │ │ ▼ │ │ [ Diverter Valve Top Port ] │ │ │ │ │ ▼ Vents Compressor Charge │ │ [ Turbo Inlet Pipe (TIP) ] │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
BOSCH ME7.5 LEAK DETECTION PUMP (LDP V144) OPERATIONAL CYCLE
Ch 28 · EVAP & Leak Detection Pump
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7.5 LEAK DETECTION PUMP (LDP V144) OPERATIONAL CYCLE │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ [ Engine Intake Vacuum ] │ │ │ │ │ ▼ │ │ ┌─────────────────────────────────────────────┐ │ │ │ LDP Solenoid Valve (Driven by Pin 113) │ │ │ └──────┬───────────────────────────────┬──────┘ │ │ │ │ │ │ ECU Grounds Pin 113 │ │ ECU Releases Pin 113 │ │ Vacuum pulls spring- │ │ Calibrated return spring pushes │ │ loaded diaphragm up │ │ diaphragm down, pumping filtered│ │ into upper chamber │ │ air into fuel tank (25 mbar) │ │ └───────────────┬───────────────┘ │ │ ▼ │ │ [ Magnetic Reed Switch (F144) ] │ │ Feedback signal on Pins 25 & 26 │ │ │ │ │ ┌───────────────────────┴───────────────────────┐ │ │ ▼ Rapid Diaphragm Drop ▼ Slow Diaphragm Drop │ │ Pressure Escaping Fast: Pressure Holds Steady: │ │ DTC P0455 (Gross Leak) EVAP System Airtight! │ │ DTC P0442 (Minor Leak 0.020") Readiness Sets to PASSED │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
INDUCTIVE COIL SATURATION & DWELL TIME (t_dwell) DYNAMICS
Ch 29 · Dwell & Ignition Coils
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ INDUCTIVE COIL SATURATION & DWELL TIME (t_dwell) DYNAMICS │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ Primary Current (A) │ │ ▲ │ │ 10A ┼─────────────────────────────────────────────● Saturation Ceiling (Thermal Heat Limit) │ │ │ / │ │ 8A ┼──────────────────────────────● (R8 Target)/ │ │ │ / / │ │ 6A ┼───────────────● (1.8T Target) / │ │ │ / / / │ │ 4A ┼ / / / │ │ │ / / / │ │ 0A ┼──●────────/────────────/────────────/─────────────────────────────► Time (ms) │ │ 0.0 ms 1.5 ms 2.5 ms 3.2 ms │ │ │ │ Magnetic Stored Energy Formula: E = 0.5 * L * I^2 (R8 Coils: ~55 mJ vs. Factory 1.8T: ~30 mJ) │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
NATIVE ME7.5 WATER-METHANOL INJECTION (WMI) CONTROL TOPOLOGY
Ch 30 · Water-Methanol Injection
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ NATIVE ME7.5 WATER-METHANOL INJECTION (WMI) CONTROL TOPOLOGY │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ C167CR Microcontroller Core │ │ Reads: Actual Engine Load (rl_w) & Boost Pressure (pvdks_w) │ │ │ │ │ ▼ │ │ [ Custom 2D WMI Duty Cycle Table in Code Cave 3 ] │ │ Progressive Calculation: 0% Duty below 12 psi, │ │ ramping linearly to 100% Duty at 25 psi │ │ │ │ │ ▼ 30 Hz Low-Frequency PWM │ │ Internal CAPCOM Timer Output Channel P2.7 / CC7IO │ │ │ │ │ ▼ Gate Drive │ │ Bosch 30344 Low-Side Smart Power Stage (Channel A10) │ │ │ │ │ ▼ Active Sinks Ground │ │ [ ECU Pin 116 (Dedicated WMI Solenoid Output) ] │ │ │ │ │ ▼ High-Speed PWM Valve │ │ High-Speed Fluid Injection Solenoid (250 psi) │ │ Directs Atomized Mist into Intake Manifold Runner │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
BOSCH ME7.5 SAUGROHRMODELL (SPEED DENSITY) CHARGE CALCULATION
Ch 31 · MAFless / Speed Density
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7.5 SAUGROHRMODELL (SPEED DENSITY) CHARGE CALCULATION │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ [ Engine Speed (nmot_w) ] [ Throttle Plate Angle (dkv_w) ] │ │ │ │ │ │ ▼ ▼ │ │ ┌─────────────────────────────────────────────────────────────┐ │ │ │ FRLFN Characteristic Filling Surface │ │ │ │ Base Volumetric Efficiency: VE = f(nmot, dkv) │ │ │ └──────────────────────────────┬──────────────────────────────┘ │ │ │ │ │ ▼ Base Relative Filling (rl_base) │ │ [ Manifold Absolute Pressure (pvdks_w / MAP Sensor G31) ] │ │ [ Intake Air Temperature (tans / IAT Sensor G42) ] │ │ │ │ │ ▼ Corrected via FTBR (Gas Law: P = rho * R * T) │ │ ┌─────────────────────────────────────────────────────────────┐ │ │ │ Synthesized Relative Cylinder Air Charge (rl_w) │ │ │ └──────────────────────────────┬──────────────────────────────┘ │ │ │ │ │ ┌──────────────────────────────────┴──────────────────────────────────┐ │ │ ▼ ▼ │ │ [ Fuel Injection Duration ] [ Ignition Advance Map ] │ │ ti_b1 = rl_w * KRKTE * LAMFA KFZW = f(nmot_w, rl_w) │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
BOSCH ME7.5 ARMIN (ANTI-JERK) DAMPING REGULATOR ARCHITECTURE
Ch 32 · Anti-Jerk Damping
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7.5 ARMIN (ANTI-JERK) DAMPING REGULATOR ARCHITECTURE │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ [ Crankshaft VR Sensor (G28) ] │ │ │ │ │ ▼ │ │ High-Resolution Angular Acceleration (d_omega/dt) │ │ Measures 60-2 trigger tooth timing variations │ │ │ │ │ ▼ │ │ [ Driveline Resonance Detection Filter ] │ │ Compares acceleration spikes against ELAUF threshold │ │ │ │ │ ▼ Torsional Oscillation Detected! │ │ ┌────────────────────────────────────────┴────────────────────────────────────────┐ │ │ ▼ ▼ │ │ [ Fast Path: Ignition Angle Retard ] [ Slow Path: Electronic Throttle] │ Solenoid / Combustion Spark Intervention Dampens rate of throttle plate│ │ Delta_ZW = f(KFFDLGO, d_omega/dt) plate opening (DVE) │ │ Instantly drops peak cylinder pressure by up to -8.0° KW Smooths intake airflow surge │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
ECM & TCM CAN BUS REAL-TIME TORQUE INTERVENTION TOPOLOGY
Ch 33 · Transmission Interfacing
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ ECM & TCM CAN BUS REAL-TIME TORQUE INTERVENTION TOPOLOGY │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ [ Engine Control Module (J220) ] [ Transmission Module (J217) ] │ │ │ │ │ │ │ ─── CAN 0x280: Engine Speed & Actual Torque ────► │ │ │ │ │ │ │ │ ◄── CAN 0x488: Shift Torque Reduction Request ─── │ │ │ │ (mdred_w commands 50% torque cut for 180 ms) │ │ │ │ │ │ │ [ Fast Spark Retard Path ] │ │ │ Ignition Timing zwist pulled to -10° │ │ │ Torque collapses in 20 ms without closing throttle │ │ │ │ │ │ │ │ ▼ │ │ │ Hydraulic Clutches Shift Smoothly │ │ │ ◄── CAN 0x488: Shift Complete Notification ─────── │ Without Friction Slip│ │ │ │ │ Ignition timing returns to MBT advance │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
BOSCH ME7.5 PRINTED CIRCUIT BOARD (PCB) SILICON COMPONENT MAP
Ch 34 · PCB Repair & IC Pinouts
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7.5 PRINTED CIRCUIT BOARD (PCB) SILICON COMPONENT MAP │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ [ 121-Pin Wiring Header ] │ │ │ │ │ ┌───────────────────────┬──────────────────┴──────────────────┬───────────────────────┐ │ │ ▼ ▼ ▼ ▼ │ │ [ Bosch 30344 / CJ945C ] [ Bosch 30348 / CJ220 ] [ Bosch 30345 / CJ125 ] [ TJA1050 ] │ │ Smart Low-Side Driver H-Bridge DC Motor Driver Wideband O2 Controller High-Speed CAN │ │ Drives: Injectors 1–4, Drives: Electronic Throttle Interfaces: LSU 4.2 Transceiver │ │ N75, N249, N205, N112, Plate Motor (G186) Pins 51, 52, 70, 71 Pins 58 & 60 │ │ N80, J17, J299, Pin 116 │ │ │ │ │ │ │ │ └───────────────────────┼─────────────────────────────────────┼───────────────────────┘ │ │ ▼ ▼ │ │ [ Siemens / Infineon C167CR-LM ] [ Bosch 30343 Power Management ] │ │ 16-Bit RISC Microcontroller Multi-rail regulator: +5.0V Sensor, │ │ 144-Pin MQFP Package +3.3V Logic, Power-On Reset, K-Line │ │ │ │ │ │ ▼ ▼ │ │ [ AMD AM29F800BB Flash ] [ ST 95040 / 95080 SPI EEPROM ] │ │ 1024 KB Parallel Flash (44-Pin SOP) 512B / 1024B Non-Volatile Memory │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
Channel Output Pin Target Wiring Terminal Driven Actuator Subsystem
Ch 34 · PCB Repair & IC Pinouts
Channel Output Pin Target Wiring Terminal Driven Actuator Subsystem ───────────────────────────────────────────────────────────────────────────────────────────── Output Channel 1 ECU Pin 88 Fuel Injector Cylinder 1 (N30) Output Channel 2 ECU Pin 89 Fuel Injector Cylinder 2 (N31) Output Channel 3 ECU Pin 96 Fuel Injector Cylinder 3 (N32) Output Channel 4 ECU Pin 97 Fuel Injector Cylinder 4 (N33) Output Channel 5 ECU Pin 104 / 105 Wastegate Frequency Solenoid (N75) Output Channel 6 ECU Pin 64 Diverter Valve Solenoid (N249) Output Channel 7 ECU Pin 112 Variable Cam Timing Solenoid (N205) Output Channel 8 ECU Pin 115 Secondary Air Combivalve Solenoid (N112) Output Channel 9 ECU Pin 15 EVAP Canister Purge Solenoid (N80) Output Channel 10 ECU Pin 65 Fuel Pump Master Relay Trigger (J17) Output Channel 11 ECU Pin 106 Secondary Air Pump Relay Trigger (J299) Output Channel 12 ECU Pin 113 EVAP Leak Detection Pump Solenoid (V144) Output Channel 13 ECU Pin 116 Spare Uncommitted PWM Driver Stage Output Channel 14 Internal PCB Cooling Fan Stage 1 Relay Driver
HIGH-SPEED KWP2000 DYNAMIC TELEMETRY STREAMING TOPOLOGY
Ch 35 · High-Speed Logging
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ HIGH-SPEED KWP2000 DYNAMIC TELEMETRY STREAMING TOPOLOGY │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ [ Host Telemetry Client / Raspberry Pi / PC ] │ │ │ │ │ │ ─── 1. KWP2000 Service $2C (Dynamically Define Local Identifier) ───► │ │ │ Uploads list of 24-bit physical RAM addresses to read │ │ │ │ │ │ ◄── 2. Positive Response $6C (Packet Layout Accepted) ──────────────── │ │ │ │ │ │ ─── 3. KWP2000 Service $21 0x01 (Read Data By Local Identifier) ────► │ │ │ Initiates continuous streaming mode │ │ │ │ │ │ ◄── 4. Continuous High-Speed Data Stream (50 Hz / 125,000 bps) ─────── │ │ │ Contiguous 254-byte payload containing all 138 channels │ │ │ │ │ ┌────────────┴────────────┐ │ │ ▼ ▼ │ │ [ Binary Frame Unpacker ] [ WebSocket / MQTT Server ] ──► Live In-Car Digital Touchscreen Dash │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
60-2 CRANKSHAFT VR SIGNAL & 2-TOOTH MISSING GAP TOPOLOGY
Ch 36 · Engine Speed Sensing
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ 60-2 CRANKSHAFT VR SIGNAL & 2-TOOTH MISSING GAP TOPOLOGY │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ Voltage (V) │ │ ▲ │ │ +40V ┼ ▲ ▲ ▲ ▲ ▲ ▲ ▲ │ │ │ / \ / \ / \ / \ / \ / \ / \ │ │ 0V ┼──┼───┼──┼───┼──┼───┼────────── Flat Zero Gap ──────┼───┼──┼───┼──┼────────► Crank Angle │ │ │ \ / \ / \ / \ / \ / \ / \ / │ │ -40V ┼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ │ │ │◄── 58 Regular Teeth ──►│◄── Missing Tooth Gap ───►│◄── Cycle Repeats ──► │ │ │ (6° Pitch Each) │ (12° Missing / 84° BTDC)│ │ │ │ │ Zero-Crossing Detector in CC650 ASIC converts AC waveform into 5V digital TTL clock pulses │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
MECHANICAL NOISE VS. COMBUSTION DETONATION ACOUSTIC SPECTRUM
Ch 37 · Knock Sensor Recalibration
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ MECHANICAL NOISE VS. COMBUSTION DETONATION ACOUSTIC SPECTRUM │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ Signal Amplitude │ │ ▲ │ │ High ┼ ● True Knock Detonation Spike (> 1.8x Ratio) │ │ │ / \ │ │ │ ● Mechanical Piston Slap / \ │ │ Med ┼ / \ & Solid Mount Noise / \ │ │ │ / \─────────────────────────/ \ │ │ │ / ▲ ▲ │ │ Low ┼──/─────┼────────────────────────┼────────────────────────────────► Acoustic Frequency │ │ 1 kHz 3 kHz 6.8 kHz (Resonant Chamber Mode) │ │ │ │ Factory KRMX Threshold: Too sensitive -> Treats piston skirt slap at 3 kHz as real knock │ │ Recalibrated KRMX Envelope: Raises baseline noise floor, preserving 6.8 kHz detonation safety │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
DUAL-PORT EXTERNAL WASTEGATE & 4-PORT MAC SOLENOID TOPOLOGY
Ch 38 · External Wastegates
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ DUAL-PORT EXTERNAL WASTEGATE & 4-PORT MAC SOLENOID TOPOLOGY │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ [ Compressor Boost Source ] │ │ │ │ │ ▼ Port In │ │ ┌─────────────────────────────────────────────┐ │ │ │ MAC 4-Port Boost Solenoid (Pin 104) │ │ │ └──────┬───────────────────────────────┬──────┘ │ │ │ │ │ │ Low Duty Cycle (0% PWM) │ │ High Duty Cycle (100% PWM) │ │ Directs Boost to BOTTOM │ │ Directs Boost to TOP Port; │ │ Port; Vents Top to Atmo │ │ Vents Bottom Port to Atmo │ │ │ │ │ │ ▼ ▼ │ │ ┌───────────────────────────────────────────────────┐ │ │ │ External Dual-Port Wastegate (TiAL 38mm/44mm) │ │ │ │ • Top Port: Pushes Valve CLOSED (Assists Spring)│ │ │ │ • Bottom Port: Pushes Valve OPEN against Spring │ │ │ └─────────────────────────┬─────────────────────────┘ │ │ │ │ │ ▼ Exhaust Gas Bypassed Directly to Atmos / Downpipe │ │ │ │ Control Ratio: Over 1:8 (A soft 5 psi base spring can reliably hold 40+ psi of boost!) │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
MOTORSPORT ENGINE HARNESS CROSS-SECTIONAL ARCHITECTURE
Ch 39 · Harness Fabrication
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ MOTORSPORT ENGINE HARNESS CROSS-SECTIONAL ARCHITECTURE │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ [ Raychem DR-25 Heat Shrink Outer Jacket ] │ │ [ Resists Fuel, Oil, High-Temp up to 150°C ] │ │ │ │ │ ┌───────────────────────────────┬─────────────┴─────────────┬────────────────────────┐ │ │ ▼ ▼ ▼ ▼ │ │ [ 14 AWG Heavy Power ] [ 20 AWG Actuators ] [ 22 AWG Sensors ] [ M27500 Shielded│ │ • Ground (Pins 1 & 2) • Injectors 1–4 • MAP & IAT Sensors • Crank G28 (82/90│ │ • Inj Power (Pin 121) • Solenoids (N75/N249) • Throttle Pots (33/34) • Knock G61/G66 │ │ • Battery 12V (Pin 21) • Ignition Triggers • Sensor Vref (108) • Drain to Pin 1/2│ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
BOSCH ME7.5 DUAL-PATH IDLE SPEED CONTROL ARCHITECTURE (LLR)
Ch 41 · Idle Speed Control
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7.5 DUAL-PATH IDLE SPEED CONTROL ARCHITECTURE (LLR) │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ [ Crankshaft Speed Sensor (G28) ] │ │ │ │ │ ▼ │ │ Error Calculation: Delta_N = (N_target - N_actual) │ │ │ │ │ ┌────────────────────────────────────────┴────────────────────────────────────────┐ │ │ ▼ ▼ │ │ [ FAST PATH: Ignition Angle Trimming ] [ SLOW PATH: Electronic Throttle] │ • Response Time: Immediate (< 10 ms) • Response Time: 100–250 ms │ │ • Delta_ZW = f(Delta_N, tmot) • Airflow target (mll_w) │ │ • Range: -10.0° to +15.0° KW • Modulates plate by 1.5°–4.5° │ │ • Instantly catches sudden load dips (A/C clutch, alternator) • Absorbs steady-state drag │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
BOSCH ME7.5 INTAKE RUNNER WALL WETTING & TRANSIENT FUELING
Ch 42 · Wall Wetting & Transients
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7.5 INTAKE RUNNER WALL WETTING & TRANSIENT FUELING │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ [ Fuel Injector Spray ] │ │ │ │ │ ┌───────────────────────┴───────────────────────┐ │ │ ▼ Direct Vapor Fraction (1 - Alpha) ▼ Wall Deposition (Alpha) │ │ Enters cylinder directly as airborne mist Condenses on runner walls and valves │ │ │ forming liquid fuel film (m_film) │ │ │ │ │ │ │ ▼ Evaporation Rate (Beta) │ │ │ Boils off into airstream based on │ │ │ manifold vacuum & runner temperature │ │ │ │ │ │ └───────────────────────┬───────────────────────┘ │ │ ▼ │ │ [ Total Combustible Cylinder Charge ] │ │ │ │ │ ┌──────────────────────────────────────┴──────────────────────────────────────┐ │ │ ▼ Sudden Throttle Tip-In (Pressure Rises) ▼ Sudden Throttle Lift-Off (Vacuum Rises) │ │ • Evaporation rate plummets • Fuel film instantly flash-boils into gas │ │ • Extra fuel condenses on walls • Cylinder receives excess unmetered fuel │ │ • Threat: SEVERE LEAN STUMBLE (λ > 1.30) • Threat: RICH OVERRUN SPIKE (λ < 0.70) │ │ • ECU Action: Commands Transient Enrichment • ECU Action: Cuts Injection (Enleanment) │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
BOSCH ME7 VARIABLE DUAL-RUNNER INTAKE TOPOLOGY (SRU)
Ch 43 · Intake Resonance (SRU)
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7 VARIABLE DUAL-RUNNER INTAKE TOPOLOGY (SRU) │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ [ Throttle Body Airflow ] │ │ │ │ │ ▼ │ │ ┌─────────────────────────────────────────────┐ │ │ │ SRU Vacuum Solenoid Valve (N156) │ │ │ └──────┬───────────────────────────────┬──────┘ │ │ │ │ │ │ Low RPM (< 4200 RPM) │ │ High RPM (> 4200 RPM) │ │ Flap CLOSED (De-energized)│ │ Flap OPEN (Energized) │ │ Air forced down LONG, │ │ Air takes direct SHORT path │ │ narrow resonance runners │ │ into intake valve ports │ │ │ │ │ │ ▼ ▼ │ │ ┌──────────────────────────────────┐ ┌──────────────────────────────────┐ │ │ │ Long-Runner Acoustic Inertia │ │ Short-Runner Low Flow Resistance │ │ │ │ • Helmholtz Ram-Charging │ │ • Maximizes Peak Air Mass Flow │ │ │ │ • Boosts Low-End Torque (+25 Nm) │ │ • Delivers Maximum Top-End Power │ │ │ └──────────────────────────────────┘ └──────────────────────────────────┘ │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
1.8T 20V VALVE-TO-VALVE CLEARANCE GEOMETRY DURING VVT ADVANCE
Ch 44 · High-Lift Camshafts
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ 1.8T 20V VALVE-TO-VALVE CLEARANCE GEOMETRY DURING VVT ADVANCE │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ [ Pent-Roof Combustion Chamber ] │ │ │ │ │ ┌────────────────────────────────────────┴────────────────────────────────────────┐ │ │ ▼ Exhaust Valves (2 Valves per Cyl) ▼ Intake Valves (3 Valves per Cyl) │ │ Stem Angle: 17.5° from vertical Stem Angle: 20.0° from vertical │ │ Closing towards valve seat Opening into combustion chamber │ │ │ │ │ ▼ │ │ [ CRITICAL OVERLAP WINDOW (TDC Exhaust / Intake Stroke Transition) ] │ │ Stock Camshafts + VVT 22° Advance ────────► Safe Clearance: > 1.85 mm (0.073") │ │ High-Lift Cams + VVT 22° Advance ────────► DANGER ZONE: < 0.35 mm (0.014")! │ │ Risk of Physical Contact & Stem Fracture! │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
AUTOMATED FUZZY PATTERN MATCHING & XDF PORTING WORKFLOW
Ch 45 · Pattern Matching & XDF Porting
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ AUTOMATED FUZZY PATTERN MATCHING & XDF PORTING WORKFLOW │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ [ Master Donor Binary (06A906032LP / h24bw05g) ] │ │ [ Master Definition Database (Known Flash Offsets for Top 40 Maps) ] │ │ │ │ │ ▼ │ │ ┌─────────────────────────────────────────────────────────────┐ │ │ │ Signature Extraction & Normalization │ │ │ │ Extracts 32-byte binary footprint surrounding map table │ │ │ │ Masks volatile memory addresses & pointers with wildcards │ │ │ └──────────────────────────────┬──────────────────────────────┘ │ │ │ │ │ ▼ Normalized Pattern String │ │ [ Target Un-Mapped Binary (e.g. 06A906032PL / 06A906032SK) ] │ │ │ │ │ ▼ Sliding-Window Byte Matching │ │ ┌─────────────────────────────────────────────────────────────┐ │ │ │ Relocation & Offset Calculation │ │ │ │ Identifies relocated table address in target binary │ │ │ │ Verifies inline/shared axis headers and table dimensions │ │ │ └──────────────────────────────┬──────────────────────────────┘ │ │ │ │ │ ▼ │ │ [ Output: Fully Populated TunerPro Definition File (target.xdf) ] │ │ Ready for immediate visual calibration and tuning without manual map finding! │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
SECONDARY AIR INJECTION (SAI) ELECTRO-PNEUMATIC ARCHITECTURE
Ch 46 · Secondary Air Injection
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ SECONDARY AIR INJECTION (SAI) ELECTRO-PNEUMATIC ARCHITECTURE │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ [ Airbox / Intake Filter ] │ │ │ │ │ ▼ Fresh Filtered Air │ │ ┌───────────────────────┐ 12V Switched Power │ │ │ Secondary Air Pump │ ◄────────────────────────────── [ SAI Pump Relay J299 ] │ │ │ (V101 Electric Motor) │ ▲ │ │ └───────────┬───────────┘ │ Pin 65 (Low-Side Drive) │ │ │ High-Volume Low-Pressure Air │ │ │ ▼ ┌────────┴────────┐ │ │ ┌───────────────────────┐ │ Bosch ME7.5 │ │ │ │ Combination Valve │ │ ECU │ │ │ │ (Vacuum-Actuated) │ ◄─────────────────┐ └────────┬────────┘ │ │ └───────────┬───────────┘ │ Vacuum Command │ Pin 114 (PWM/Low-Side) │ │ │ Injected Secondary Air │ ▼ │ │ ▼ │ ┌───────────────────────┐ │ │ ┌───────────────────────┐ └─────────────┤ SAI Solenoid Valve │ │ │ │ Cylinder Head Exhaust │ │ (N112 Electro-Pneum.) │ │ │ │ Ports (Behind Valves) │ └──────────┬────────────┘ │ │ └───────────┬───────────┘ │ │ │ │ Exothermic Post-Combustion Oxidation ▼ │ │ ▼ [ Intake Manifold Vacuum ] │ │ ┌───────────────────────┐ │ │ │ Catalytic Converter │ ◄── Rapid Thermal Light-Off (> 350°C in < 30 seconds) │ │ │ (Exhaust Downpipe) │ │ │ └───────────────────────┘ │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
BOSCH ME7.5 SAI DIAGNOSTIC FLOW TEST
Ch 46 · Secondary Air Injection
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7.5 SAI DIAGNOSTIC FLOW TEST │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ Engine Running in Secondary Air Phase: │ │ 1. ECU Commands N112 Open + J299 ON │ │ 2. ECU Observes Upstream Lambda (US): │ │ - Normal Cold Start without SAI: λ ≈ 0.80 - 0.85 (Rich) │ │ - Normal Cold Start WITH SAI Active: λ > 1.25 - 1.40 (Extreme Lean Deflection) │ │ │ │ 3. Plausibility Evaluation: │ │ IF (Measured Upstream Oxygen Concentration < Threshold MSLRE): │ │ → Diagnostic Failure Counter Increments │ │ → If Fault Persists for 2 Consecutive Driving Cycles: │ │ MIL Illuminated: DTC P0411 (16795) - Incorrect Flow Detected │ │ MIL Illuminated: DTC P1423 (17831) - Bank 1 Flow Too Low │ │ │ │ 4. Electrical Load Verification: │ │ Output Stage Diagnostics monitor Pin 65 (J299) and Pin 114 (N112): │ │ - Unplugged N112: DTC P1421 / P1425 (Short to Ground / Open Circuit) │ │ - Unplugged J299: DTC P0418 / P1435 (Secondary Air Relay Open / Malfunction) │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
INTERNAL EGR & SCAVENGING PRESSURE GRADIENT PHYSICS
Ch 47 · EGR & Backpressure
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ INTERNAL EGR & SCAVENGING PRESSURE GRADIENT PHYSICS │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ Intake Manifold (Boost p2) Exhaust Manifold (Pre-Turbine p3) │ │ ┌───────────────────────────┐ ┌───────────────────────────┐ │ │ │ Pressure: p2 │ │ Pressure: p3 │ │ │ │ Fresh Air Charge (rl) │ │ Exhaust Backpressure │ │ │ └─────────────┬─────────────┘ └─────────────┬─────────────┘ │ │ │ Intake Valve Open │ Exhaust Valve Open │ │ ▼ ▼ │ │ ══════════════════════════════════════════════════════════════════ │ │ ║ CYLINDER COMBUSTION CHAMBER ║ │ │ ║ ║ │ │ ║ [ VALVE OVERLAP WINDOW: Intake Opens BEFORE Exhaust Closes ] ║ │ │ ║ ║ │ │ ║ Case 1: Boost > Backpressure (p2 > p3) ║ │ │ ║ → Positive Pressure Gradient: Fresh charge scavenges cylinder║ │ │ ║ → Zero residual gas, high volumetric efficiency (High VE) ║ │ │ ║ ║ │ │ ║ Case 2: Backpressure > Boost (p3 > p2) ║ │ │ ║ → Negative Pressure Gradient: Hot exhaust gas flows BACK ║ │ │ ║ into intake runner and combustion chamber ║ │ │ ║ → High Internal Residual Gas Fraction (xr > 18%) ║ │ │ ║ → Cylinder dilution, elevated knock risk, VE penalty ║ │ │ ══════════════════════════════════════════════════════════════════ │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
HIGH-ALTITUDE TURBOCHARGER PROTECTION ARCHITECTURE
Ch 48 · Altitude & Turbo Protection
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ HIGH-ALTITUDE TURBOCHARGER PROTECTION ARCHITECTURE │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ [ Ambient Barometric Pressure Sensor: p_amb ] │ │ (Onboard ECU Baro Sensor / Key-On MAP Pre-Crank Sample: 1013 hPa -> 700 hPa) │ │ │ │ │ ▼ │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ Altitude Correction Factor: FHO (1.00 at Sea Level -> 0.72 at 3000m) │ │ │ └──────────────────────────────┬──────────────────────────────────────────┘ │ │ │ │ │ ┌────────────────────────┴────────────────────────┐ │ │ ▼ ▼ │ │ ┌───────────────────────────┐ ┌───────────────────────────┐ │ │ │ Dynamic Maximum Boost │ │ Max Cylinder Filling │ │ │ │ Ceiling: KLDHAP │ │ Ceiling: LDRXN_H │ │ │ │ (Caps Absolute Pressure) │ │ (Limits Specified Air) │ │ │ └─────────────┬─────────────┘ └─────────────┬─────────────┘ │ │ │ │ │ │ └────────────────────────┬────────────────────────┘ │ │ ▼ │ │ ┌─────────────────────────────────┐ │ │ │ Minimum Selector (LDRPID Input) │ │ │ │ Prevents Shaft Over-Speed & │ │ │ │ Compressor Aerodynamic Choke │ │ │ └─────────────────────────────────┘ │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
BOSCH ME7.5 ALTITUDE BOOST CEILING PIPELINE
Ch 48 · Altitude & Turbo Protection
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7.5 ALTITUDE BOOST CEILING PIPELINE │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ pvdss_w (Raw Specified Boost Target from LDRXN / KFMIRL) │ │ │ │ │ ├──► MIN[ pvdss_w , KLDHAP(p_amb, N_mot) , KFLDHBN(N_mot, p_amb) ] ──► Final Boost Limit │ │ │ │ Where: │ │ - KLDHAP: Absolute pressure ceiling curve indexed against ambient pressure │ │ - KFLDHBN: Maximum pressure ratio ceiling across engine speed │ │ - FHO: Linear scaling factor multiplying permissible cylinder air mass │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
EVAP PURGE (N80) DYNAMIC FUEL ESTIMATION ARCHITECTURE
Ch 49 · Tank Ventilation (N80)
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ EVAP PURGE (N80) DYNAMIC FUEL ESTIMATION ARCHITECTURE │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ [ Fuel Tank Fuel Vapor ] ──► [ Activated Charcoal Canister (AKF) ] │ │ │ │ │ ▼ Hydrocarbon Vapor Flow │ │ ┌───────────────────────────┐ │ │ │ EVAP Purge Solenoid (N80) │ │ │ │ (Pulsed by ME7.5 Pin 64) │ │ │ └─────────────┬─────────────┘ │ │ │ Variable Vapor Stream │ │ ▼ │ │ ┌───────────────────────────┐ │ │ │ Intake Manifold Chamber │ │ │ └─────────────┬─────────────┘ │ │ │ Cylinder Intake Charge │ │ ▼ │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ Wideband O2 Sensor (LSU 4.2 / CJ125): Measures Mixture Deviation │ │ │ └──────────────────────────────────────┬──────────────────────────────────┘ │ │ │ │ │ ▼ │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ Vapor Hydrocarbon Concentration Observer: FTE │ │ │ │ - FTE = 0.0: Pure ambient air through canister (Lean disturbance) │ │ │ │ - FTE = 1.0: Saturated rich fuel vapor (Massive rich disturbance) │ │ │ └──────────────────────────────────────┬──────────────────────────────────┘ │ │ │ │ │ ▼ Dynamic Subtraction │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ Final Injector Base Fuel Mass: rk_final = rk_air * (1.0 - delta_rk_te) │ │ │ │ Prevents rich stumbling, surging, and catalytic converter damage! │ │ │ └─────────────────────────────────────────────────────────────────────────┘ │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
BOSCH ME7.5 CRANKSHAFT ROUGH-RUNNING MISFIRE ARCHITECTURE
Ch 50 · Misfire Detection
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7.5 CRANKSHAFT ROUGH-RUNNING MISFIRE ARCHITECTURE │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ [ 60-2 Crankshaft Trigger Wheel & VR Sensor G28 ] │ │ │ │ │ ▼ Microsecond Edge Capture (CAPCOM Register) │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ Segment Duration Measurement: T_seg (Time to traverse 180° Crank Angle) │ │ │ └────────────────────────────────────┬────────────────────────────────────┘ │ │ │ │ │ ▼ │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ Mathematical Rough-Running Index Calculation: │ │ │ │ LUE_n = ( T_seg[n+1] - T_seg[n] ) / ( T_seg[n]^3 ) │ │ │ │ (Cubic Normalization Eliminates Dependence on Engine RPM) │ │ │ └────────────────────────────────────┬────────────────────────────────────┘ │ │ │ │ │ ▼ │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ Misfire Evaluation Filter: Threshold Comparison vs. KFLUE │ │ │ │ - Level 1: Emissions-Relevant Misfire (1-2% Rate over 1000 revs) │ │ │ │ → Steady MIL: P0300 Random / P0301-P0304 Cylinder Misfire │ │ │ │ - Level 2: Catalyst-Damaging Misfire (> 10% Rate over 200 revs) │ │ │ │ → FLASHING MIL + Cylinder Selective Injector Fuel Cutout! │ │ │ └─────────────────────────────────────────────────────────────────────────┘ │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
TWO-TIER MISFIRE DIAGNOSTIC THRESHOLDS
Ch 50 · Misfire Detection
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ TWO-TIER MISFIRE DIAGNOSTIC THRESHOLDS │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ 1. Emissions-Relevant Misfire Monitoring (OBD-II Type B): │ │ - Evaluation Window: Rolling buffer of 1,000 engine revolutions │ │ - Threshold: Cumulative misfire rate exceeding 1.5% to 2.5% │ │ - Action: Check Engine Light (MIL) illuminated steady on second consecutive drive cycle. │ │ - Diagnostic Codes: P0300 (Random Misfire) or P0301-P0304 (Specific Cylinder). │ │ │ │ 2. Catalyst-Damaging Misfire Monitoring (OBD-II Type A): │ │ - Evaluation Window: Short rolling buffer of 200 engine revolutions │ │ - Threshold: Severe misfire rate exceeding 8.0% to 12.0% │ │ - Action: │ │ a) CHECK ENGINE LIGHT FLASHES RAPIDLY at 1 Hz (Immediate Driver Hazard Alert). │ │ b) Individual Cylinder Fuel Cutout (Zylinderabschaltung - B_lueabs): │ │ The ECU cuts the injector pulsewidth for the misfiring cylinder completely to ZERO. │ │ Prevents unburned liquid fuel from entering the exhaust downpipe, where it would │ │ spontaneously ignite on the catalytic converter substrate, melting the ceramic core │ │ (T > 1050°C) and triggering vehicle fires! │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
BOSCH ME7.5 EXHAUST GAS TEMPERATURE (ATR) MODEL PIPELINE
Ch 51 · EGT Model & Component Protection
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7.5 EXHAUST GAS TEMPERATURE (ATR) MODEL PIPELINE │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ [ Engine Speed: N_mot ] ───┐ │ │ [ Relative Load: rl ] ────┴─► [ Steady-State Base Map: KFNBST ] ──► T_base (750°C - 980°C) │ │ │ │ │ [ Spark Retard: ZW_opt - ZW_act ] ─────────────────────────► [ dZw ] ──┼──► (+) Summation │ │ (Every 1° of retard adds ~10°C - 15°C of exhaust heat) │ │ │ │ │ │ [ Mixture Air/Fuel Ratio: Lambda ] ────────────────────────► [ dLam ] ─┼──► (-) Evap Cooling │ │ (Enrichment λ < 0.85 extracts heat via vaporization) │ │ │ │ │ │ [ Camshaft Overlap / VVT State: B_nws ] ───────────────────► [ dNWS ] ─┘ │ │ │ │ │ ▼ │ │ ┌───────────────────────────────────────────────────┐ │ │ │ Low-Pass Thermal Inertia Filter (PT1 Delay) │ │ │ │ (Models cast iron exhaust manifold thermal mass) │ │ │ └─────────────────────────┬─────────────────────────┘ │ │ │ │ │ ▼ Calculated EGT: TABG │ │ ┌─────────────────────────────────────────────────────────────────────────────────────────┐ │ │ │ Component Thermal Protection Threshold Comparison: IF (TABG > TABGBTS) │ │ │ │ → Activate Bauteileschutz: B_bts = 1 │ │ │ │ → Override Driver Demand Lambda (LAMFA) with Rich Quench Fueling: KFFDLBTS (λ ≈ 0.72) │ │ │ └─────────────────────────────────────────────────────────────────────────────────────────┘ │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
DUAL-OXYGEN SENSOR CLOSED-LOOP INTERACTION ARCHITECTURE
Ch 52 · Rear O2 & Catalyst
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ DUAL-OXYGEN SENSOR CLOSED-LOOP INTERACTION ARCHITECTURE │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ [ Engine Exhaust Gas ] ──► [ Primary Wideband LSU 4.2 ] ──► Fast Closed-Loop Control (λ = 1.0) │ │ │ │ │ ▼ │ │ ┌─────────────────────────────────────────────────────────────────────────────────────────┐ │ │ │ Catalytic Converter Ceramic Substrate (Cerium Oxide Oxygen Storage Bed: Ce2O3 <-> 2CeO2)│ │ │ └─────────────────────────────────────┬───────────────────────────────────────────────────┘ │ │ │ │ │ ▼ Dampened / Filtered Gas Stream │ │ [ Secondary Narrowband LSF 4.2 ] │ │ │ │ │ ┌────────────────────┴────────────────────┐ │ │ ▼ ▼ │ │ ┌───────────────────────────────────┐ ┌───────────────────────────────────┐ │ │ │ Path A: Catalyst Diagnostic Test │ │ Path B: Secondary Fuel Trim (KAVS)│ │ │ │ Compares upstream vs downstream │ │ Trims primary wideband reference │ │ │ │ signal oscillation ratio. │ │ voltage to compensate for aging │ │ │ │ IF Ratio > MINKAT: │ │ and lead/phosphorus poisoning. │ │ │ │ → Sets DTC P0420 (MIL Lamp ON) │ │ (Must be decoupled on test-pipes!)│ │ │ └───────────────────────────────────┘ └───────────────────────────────────┘ │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
ENGINE THERMAL MANAGEMENT & COOLING FAN CONTROL SCHEMATIC
Ch 53 · Cooling Fans & Thermostat
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ ENGINE THERMAL MANAGEMENT & COOLING FAN CONTROL SCHEMATIC │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ [ Dual NTC Coolant Sensor: G2 / G62 ] │ │ ├─ Pins 1 & 2: Analog Output ──► Instrument Cluster Temp Gauge (J285) │ │ └─ Pins 3 & 4: Analog Signal ──► Bosch ME7.5 ECU Pin 93 (0V - 5V ADC Input) │ │ │ │ │ ▼ │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ Thermal Compensation Pipeline: │ │ │ │ • Cold Enrichment: FRLFKT (Multiplies base injection pulsewidth) │ │ │ │ • Wall-Wetting Decay: KFWT (Accelerates puddle evaporation calculation) │ │ │ │ • Knock Timing Sensitivity: KFZWW (Retards timing if T_coolant > 102°C) │ │ │ └──────────────────────────────────────┬──────────────────────────────────┘ │ │ │ │ │ ▼ │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ Radiator Cooling Fan Logic (J293 Module): │ │ │ │ • Stage 1 (Low Speed / 97°C): Triggered via Rad Thermo-Switch / A/C ON │ │ │ │ • Stage 2 (High Speed / 105°C): Triggered via High Temp / A/C p > 16bar │ │ │ │ • CAN Climatronic Pre-Emptive Torque Reserve (CAN Frame 0x288 / 0x388) │ │ │ └─────────────────────────────────────────────────────────────────────────┘ │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
C167CR LAUNCH CONTROL & ANTI-LAG EXECUTION LOGIC
Ch 54 · Launch Control & Anti-Lag
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ C167CR LAUNCH CONTROL & ANTI-LAG EXECUTION LOGIC │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ [ Vehicle Speed: vfzg_w <= 3 km/h ] │ │ [ Clutch Pedal Switch: B_kuppl == 1 (ECU Pin 39) ] │ │ [ Accelerator Pedal Position: wped_w >= 95% ] │ │ │ │ │ ▼ All Launch Conditions Met │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ Custom C167 Code Hook at Main Ignition Calculation Routine (0x028A10) │ │ │ └──────────────────────────────┬──────────────────────────────────────────┘ │ │ │ │ │ ┌────────────────────────┴────────────────────────┐ │ │ ▼ ▼ │ │ ┌───────────────────────────┐ ┌───────────────────────────┐ │ │ │ Spark Timing Override: │ │ Soft Ignition Cut Pattern:│ │ │ │ Clamp ZW to -18.0° to │ │ Drop 2 of 4 spark pulses │ │ │ │ -25.0° KW (ATDC Retard) │ │ to hold RPM exactly at │ │ │ │ Burning charge exits into │ │ target launch ceiling │ │ │ │ exhaust manifold runners! │ │ (e.g., 4000 RPM) │ │ │ └─────────────┬─────────────┘ └─────────────┬─────────────┘ │ │ │ │ │ │ └────────────────────────┬────────────────────────┘ │ │ ▼ │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ Exhaust Gas Enthalpy Surge Powers Turbine Wheel at 0 MPH! │ │ │ │ • Generates 0.8 bar to 1.3 bar (12 - 19 psi) Positive Boost on Launch! │ │ │ │ • Driver Dumps Clutch: Instantaneous Maximum Torque Delivery │ │ │ └─────────────────────────────────────────────────────────────────────────┘ │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
BOSCH ME7.5 1024 KB FLASH TOPOGRAPHY & SECTOR MAP
Ch 55 · Flash Map & Task Tree
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7.5 1024 KB FLASH TOPOGRAPHY & SECTOR MAP │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ Offset Range Size Sector Name / Memory Allocation Primary Architectural Role│ │ ══════════════════════════════════════════════════════════════════════════════════════════════ │ │ 0x000000 - 0x003FFF 16 KB Sector 0 (SA0 - Boot Sector) C167 Reset & IRQ Vectors │ │ 0x004000 - 0x005FFF 8 KB Sector 1 (SA1 - Parameter Storage) Hardware Config & EEP Mir│ │ 0x006000 - 0x007FFF 8 KB Sector 2 (SA2 - KWP2000 Protocol) Bootloader & Flashing Com│ │ 0x008000 - 0x00FFFF 32 KB Sector 3 (SA3 - System Initialization) Microcontroller Startup │ │ 0x010000 - 0x01FFFF 64 KB Sector 4 (SA4 - CALIBRATION DATA) ★ 100% OF MAPS & CONSTS │ │ 0x020000 - 0x02FFFF 64 KB Sector 5 (SA5 - ASW Core Code Part 1) Engine Timing & Spark │ │ 0x030000 - 0x03FFFF 64 KB Sector 6 (SA6 - ASW Core Code Part 2) Fuel Injection & Lambda │ │ 0x040000 - 0x04FFFF 64 KB Sector 7 (SA7 - ASW Core Code Part 3) E-Gas & Torque Model │ │ 0x050000 - 0x05FFFF 64 KB Sector 8 (SA8 - ASW Core Code Part 4) Boost Control (LDRPID) │ │ 0x060000 - 0x06FFFF 64 KB Sector 9 (SA9 - ASW Core Code Part 5) Knock Sensing & Thermal │ │ 0x070000 - 0x07FFFF 64 KB Sector 10 (SA10 - ASW Core Part 6) Custom Code Hook Area │ │ 0x080000 - 0x08FFFF 64 KB Sector 11 (SA11 - ASW Extended Part 7) Emissions & Secondary Air│ │ 0x090000 - 0x09FFFF 64 KB Sector 12 (SA12 - ASW Extended Part 8) EVAP & Tank Ventilation │ │ 0x0A0000 - 0x0AFFFF 64 KB Sector 13 (SA13 - ASW Extended Part 9) Drivetrain CAN Gateway │ │ 0x0B0000 - 0x0BFFFF 64 KB Sector 14 (SA14 - DFPM Diagnostics 1) Fault Path Evaluators │ │ 0x0C0000 - 0x0CFFFF 64 KB Sector 15 (SA15 - DFPM Diagnostics 2) Readiness & Freeze-Frames│ │ 0x0D0000 - 0x0DFFFF 64 KB Sector 16 (SA16 - OBD-II Tables) SAE P-Code Lookup Arrays │ │ 0x0E0000 - 0x0EFFFF 64 KB Sector 17 (SA17 - Extended Drivers) Analog ADC Sensor Drivers│ │ 0x0F0000 - 0x0FFFFF 64 KB Sector 18 (SA18 - End Sector) Main Checksum Signatures │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
BOSCH ME7.5 CYCLIC TASK SCHEDULER
Ch 55 · Flash Map & Task Tree
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ BOSCH ME7.5 CYCLIC TASK SCHEDULER │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ 1. Crankshaft-Synchronous Interrupt Service Routine (Angle-Based: Every 180° KW): │ │ ├── CAPCOM Capture: Measure exact tooth edge timing (G28 sensor) -> Calculate T_seg │ │ ├── ZW_BERECHNUNG: Compute instantaneous ignition dwell & spark advance angle (dwk_w) │ │ ├── EV_STEUERUNG: Calculate precise injection start angle (SOI) & pulse duration (ti_b1) │ │ └── KR_ERFASSUNG: Read knock sensor ADC integrator windows for completed cylinder stroke │ │ │ │ 2. 10 Millisecond Fast Synchronous Task Loop (100 Hz High-Priority): │ │ ├── DVE_REGELUNG: Electronic Throttle Body servo motor PID control loop (G186 motor drive) │ │ ├── MD_MSR: Drivetrain anti-slip regulation (ASR) & engine drag torque (MSR) interventions │ │ ├── FUELLUNG_SYN: High-speed intake manifold pressure & mass airflow integration │ │ └── DWELL_CONTROL: High-voltage ignition coil charge timing compensation │ │ │ │ 3. 20 Millisecond Intermediate Task Loop (50 Hz Vehicle Dynamics): │ │ ├── LDRPID: Closed-loop turbocharger boost pressure PID governor & wastegate linearization │ │ ├── TORQUE_MONITOR: Level 2 safety monitoring & pedal-to-torque plausibility check │ │ ├── WANDFILM: Dynamic intake manifold wall-wetting fuel puddle compensation │ │ └── ANTI_JERK: Driveline oscillation damping filter (ARMIN / KFFDLGO) │ │ │ │ 4. 100 Millisecond Slow Supervisory Task Loop (10 Hz Drivetrain & Emissions): │ │ ├── LAMBDA_CLOSED_LOOP: Continuous fuel trimming from upstream wideband sensor (LSU 4.2) │ │ ├── TANK_PURGE: Evaporative canister purge valve modulation (N80) & FTE vapor observer │ │ ├── THERMAL_MANAGEMENT: Radiator cooling fan speed commands & electric thermostat (F265) │ │ └── CAN_TRANSMIT: Broadcast powertrain data frames (0x280, 0x288, 0x380, 0x480) │ │ │ │ 5. Background Idle & Self-Test Loop (0 Hz Continuous Run-Queue): │ │ ├── DFPM: Diagnostic Fault Path Manager cycle (Evaluates B_kat, B_sls, B_te fault counters) │ │ ├── READINESS: Update legal OBD-II readiness monitor status bits │ │ └── CHECKSUM_SELF_TEST: Continuous background ROM cyclic redundancy checks (CRC32) │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
RETURN VS. RETURNLESS FUEL RAIL HYDRAULIC COMPARISON
Ch 56 · Fuel Pumps & Rail Pressure
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ RETURN VS. RETURNLESS FUEL RAIL HYDRAULIC COMPARISON │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ 1. RETURN-STYLE ARCHITECTURE (Early 1.8T: AWD, AWW, Audi TT APX): │ │ [ Fuel Tank ] ──► [ Feed Line ] ──► [ Fuel Rail ] ──► [ Fuel Pressure Regulator (FPR) ] │ │ │ Vacuum Reference Line │ │ ▼ (Connected to Manifold) │ │ [ Return Line to Tank ] │ │ • Manifold Vacuum (-0.7 bar): Rail Pressure drops to 2.3 bar (3.0 bar base) │ │ • Manifold Boost (+1.5 bar): Rail Pressure climbs to 4.5 bar │ │ ★ Constant Differential Pressure: Δp_inj = p_rail - p_manifold = 3.0 bar ALWAYS CONSTANT! │ │ │ │ 2. RETURNLESS ARCHITECTURE (Late 1.8T: AWP 2002-2005): │ │ [ Fuel Tank ] ──► [ Integrated Filter/Regulator ] ──► [ Dead-End Fuel Rail (No Return) ] │ │ │ Fixed Atmospheric Reference (p_amb) │ │ ▼ Excess Spill Directly into Tank Basket │ │ • Manifold Vacuum (-0.7 bar): Rail Pressure remains FIXED at 3.0 bar (Δp_inj = 3.7 bar) │ │ • Manifold Boost (+1.5 bar): Rail Pressure remains FIXED at 3.0 bar (Δp_inj = 1.5 bar!) │ │ ★ Collapsing Differential Pressure: Effective injector flow DROPS by ~29% at 1.5 bar boost! │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
ALTERNATOR LOAD SENSING & VOLTAGE COMPENSATION ARCHITECTURE
Ch 57 · Alternator & Battery Voltage
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ ALTERNATOR LOAD SENSING & VOLTAGE COMPENSATION ARCHITECTURE │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ [ Bosch 90A / 120A Alternator ] │ │ ├─ Terminal B+: 14.2V High-Current Output ──► Primary Battery Distribution Bus │ │ └─ Terminal DF: Digital PWM Excitation Signal ──► Bosch ME7.5 ECU Pin 38 │ │ │ │ │ ▼ │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ Alternator Mechanical Drag Torque Calculation: MDDF │ │ │ │ • Reads DF Duty Cycle (0% to 100% excitation) │ │ │ │ • Calculates mechanical power absorbed from serpentine belt: │ │ │ │ P_alt = (U_batt * I_alt) / efficiency │ │ │ │ • Commands pre-emptive idle throttle opening before RPM sags! │ │ │ └─────────────────────────────────────────────────────────────────────────┘ │ │ │ │ [ System Operating Voltage Sensing: U_B (ECU Pins 3 & 121) ] │ │ │ │ │ ┌──────────────────────────┼──────────────────────────┐ │ │ ▼ ▼ ▼ │ │ ┌────────────────────┐ ┌────────────────────┐ ┌────────────────────┐ │ │ │ Fuel Injector Dead-│ │ Ignition Dwell │ │ Throttle Motor │ │ │ │ Time: TVUB(U_B) │ │ Charging: KFSZT │ │ Drive: DVE │ │ │ │ • 14.0V: 0.85 ms │ │ • 14.0V: 2.2 ms │ │ Scales PWM duty to │ │ │ │ • 10.0V: 1.45 ms │ │ • 10.0V: 4.8 ms │ │ hold blade position│ │ │ │ • 8.5V: 2.10 ms │ │ (Prevents spark │ │ against spring pull│ │ │ │ (Preserves lambda) │ │ blowout at WOT) │ │ during voltage dips│ │ │ └────────────────────┘ └────────────────────┘ └────────────────────┘ │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
GEAR RATIO DETECTION & BOOST-BY-GEAR PIPELINE
Ch 58 · Vehicle Speed & Boost by Gear
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ GEAR RATIO DETECTION & BOOST-BY-GEAR PIPELINE │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ [ Engine Speed: N_mot (G28 Crank Sensor) ] │ │ [ Vehicle Road Speed: vfzg (G22 Hall Sensor / CAN ABS Frame 0x1A0) ] │ │ [ Clutch Switch: B_kuppl == 0 (Pedal Released) ] │ │ │ │ │ ▼ Ratio Calculation │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ Transmission Ratio Quotients: R_gear = N_mot / vfzg │ │ │ │ • Gear 1: R ≈ 135 rpm/(km/h) ──► Selected Gear = 1 │ │ │ │ • Gear 2: R ≈ 78 rpm/(km/h) ──► Selected Gear = 2 │ │ │ │ • Gear 3: R ≈ 52 rpm/(km/h) ──► Selected Gear = 3 │ │ │ │ • Gear 4: R ≈ 39 rpm/(km/h) ──► Selected Gear = 4 │ │ │ │ • Gear 5: R ≈ 30 rpm/(km/h) ──► Selected Gear = 5 │ │ │ │ • Gear 6: R ≈ 25 rpm/(km/h) ──► Selected Gear = 6 │ │ │ └──────────────────────────────┬──────────────────────────────────────────┘ │ │ │ │ │ ▼ Active Gear State: gangi │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ Gear-Dependent Maximum Engine Load Selector: │ │ │ │ • 1st Gear: Clamped to 0.55 bar boost (rl = 115%) -> Zero Wheelspin │ │ │ │ • 2nd Gear: Clamped to 0.85 bar boost (rl = 145%) -> Max Traction Hold │ │ │ │ • 3rd Gear: Ramped to 1.25 bar boost (rl = 185%) -> Forward Thrust Surge │ │ │ │ • 4th-6th: Full 1.50 bar boost (rl = 215%) -> Maximum Top-End Power! │ │ │ └─────────────────────────────────────────────────────────────────────────┘ │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
DUAL BRAKE SWITCH ELECTRICAL SAFETY INTERFACE
Ch 59 · Brake & Clutch Interlocks
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ DUAL BRAKE SWITCH ELECTRICAL SAFETY INTERFACE │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ [ Brake Pedal Box Assembly ] │ │ │ │ │ ├── Switch 1: Brake Light Switch F (Normally Open - NO) │ │ │ • Pedal Rest: Contacts OPEN (0V) │ │ │ • Pedal Pressed: Contacts CLOSED ──► 12V to Rear Brake Lamps + ECU Pin 56 │ │ │ │ │ └── Switch 2: Cruise / Brake Test Switch F47 (Normally Closed - NC) │ │ • Pedal Rest: Contacts CLOSED ──► 12V Logic Signal to ECU Pin 55 │ │ • Pedal Pressed: Contacts OPEN ──► 0V Logic Float to ECU Pin 55 │ │ │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ Bosch ME7.5 Plausibility Evaluator (Every 10ms Task Loop): │ │ │ │ • Normal Rest: Pin 56 = 0V AND Pin 55 = 12V ──► Status: BRAKE_OFF │ │ │ │ • Normal Braking: Pin 56 = 12V AND Pin 55 = 0V ──► Status: BRAKE_ON │ │ │ │ │ │ │ │ [ Discrepancy Failure Condition ]: │ │ │ │ • IF (Pin 56 == Pin 55) for > 50 milliseconds: │ │ │ │ → Sets DTC P0571 / 16955 (Brake Switch Electrical Plausibility Fault) │ │ │ │ → Illuminates Yellow EPC Lamp on Cluster │ │ │ │ → Permanently Disables Cruise Control (GRA) │ │ │ └─────────────────────────────────────────────────────────────────────────┘ │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
POST-DYNO CALIBRATION VERIFICATION & SIGN-OFF WORKFLOW
Ch 60 · Post-Dyno Verification
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ POST-DYNO CALIBRATION VERIFICATION & SIGN-OFF WORKFLOW │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ [ Flashed Binary File (.bin) ] │ │ │ │ │ ▼ Step 1: Pre-Flight Verification │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ Checksum Integrity: me7sum validation of all 9 Multipoint CRC Blocks │ │ │ │ Clear Adaptation Memory: VCDS Group 000 / Reset NVRAM Trims │ │ │ │ Electronic Throttle Alignment: Basic Settings Group 060 (TBA OK) │ │ │ └─────────────────────────────┬───────────────────────────────────────────┘ │ │ │ │ │ ▼ Step 2: High-Speed RAM Datalogging (ME7Logger @ 30-50 Hz) │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ 4th-Gear Wide-Open Throttle Pull (2000 RPM -> 7000 RPM on Level Road) │ │ │ │ Log: nmot_w, rl_w, pvdss_w, pvds_w, ldtv_w, lamsoni_w, zwist, dwk0..3 │ │ │ └─────────────────────────────┬───────────────────────────────────────────┘ │ │ │ │ │ ▼ Step 3: Four-Quadrant Datalog Analysis │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ A. Boost Tracking: Actual pvds tracks specified pvdss within ± 50 hPa │ │ │ │ B. Fueling Tracking: Actual lambda matches target within ± 0.02 λ │ │ │ │ C. Knock Retard: Per-cylinder timing pull dwk < -3.0° KW on all cyls │ │ │ │ D. Mass Airflow: Peak g/s matches expected Brake HP (HP ≈ MAF / 0.80) │ │ │ └─────────────────────────────┬───────────────────────────────────────────┘ │ │ │ │ │ ▼ Step 4: Long-Term Fuel Trim (LTFT) Auditing │ │ ┌─────────────────────────────────────────────────────────────────────────┐ │ │ │ Drive 50-100 Miles across mixed city/highway driving: │ │ │ │ • Idle Additive Trim (rk_w): Must settle within ± 1.5% │ │ │ │ • Part-Load Multiplicative Trim (fra_w): Must settle within ± 3.0% │ │ │ │ ★ VERDICT: FULL CALIBRATION SIGN-OFF AND PRODUCTION RELEASE │ │ │ └─────────────────────────────────────────────────────────────────────────┘ │ └──────────────────────────────────────────────────────────────────────────────────────────────────┘
MEASURING BLOCK 032 LONG-TERM FUEL TRIM SPECIFICATION
Ch 60 · Post-Dyno Verification
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐ │ MEASURING BLOCK 032 LONG-TERM FUEL TRIM SPECIFICATION │ ├──────────────────────────────────────────────────────────────────────────────────────────────────┤ │ │ │ Field 1: Idle Fuel Adaptation (Additive Trim - rk_w): │ │ • Governs fueling at idle and very light throttle tip-in. │ │ • PASS CRITERIA: -1.5% <= rk_w <= +1.5% │ │ • Excessive Positive (> +4.5%): Unmetered intake vacuum leak behind throttle body. │ │ • Excessive Negative (< -4.5%): Stuck-open EVAP N80 purge valve or leaking fuel injector. │ │ │ │ Field 2: Part-Load Fuel Adaptation (Multiplicative Trim - fra_w): │ │ • Scales fueling across mid-range cruise and on-boost operation. │ │ • PASS CRITERIA: -3.0% <= fra_w <= +3.0% │ │ • Excessive Positive (> +6.0%): Under-reading MAF sensor (dirty wire) or weak fuel pump. │ │ • Excessive Negative (< -6.0%): Incorrect injector constant (KRKTE too high) or boost leak. │ │ │ │ ★ FINAL VERDICT: │ │ When both Field 1 and Field 2 settle within the PASS CRITERIA, the calibration is certified │ │ acoustically stable, emissions compliant, and production-ready for daily street and track use!│ └──────────────────────────────────────────────────────────────────────────────────────────────────┘