Engine Management System Schematic - Up to 99MY

1. Body electrical Control Module (BeCM)- (Inputs and Outputs)
- Engine speed signal - (Output)
- Engine immobilisation security signal - (Input)
- Road speed signal - (Input from ABS ECU via BeCM)
- Check engine/Service engine soon (NAS) warning lamp - (Output)
- Fuel level signal - (Input)
2. Electronic Automatic Transmission (EAT) ECU - (Inputs and Outputs)
- Engine torque signal - (Output)
- Throttle angle signal - (Output)
- Ignition retard - (Input)
- Engine speed signal - (Output via BeCM)
3. Throttle Position (TP) sensor - (Input)
4. Ignition coils (4 off) - (Output)
5. Crankshaft speed and position (CKP) sensor - (Input)
6. Mass air flow (MAF) sensor - (Input)
7. Camshaft position (CMP) sensor - (Input)
8. Canister vent solenoid (CVS) unit - (Output- NAS Advanced EVAPs system only)
9. Purge valve - (Output)
10. Fuel tank pressure sensor - (Input - NAS Advanced EVAPs system only)
11. HO2S sensors (0, 2 or 4 off dependent on market legislation)
- (Input signal and HO2S sensor heater supply output)
12. HEVAC unit - (Inputs and Outputs)
- Air Con Request - (Output)
- Air Con Grant - (Output)
- Condenser Fan Request - (Input)
- Heated Front Screen - (Input via BeCM for idle speed compensation)
13. Condenser Fan Relay - (Output)
14. Instrument pack - (Fuel used signal output)
15. Engine coolant temperature (ECT) sensor - (Input)
16. Intake air temperature (IAT) sensor - (Input)
17. Idle Air Control Valve (IACV) - (Output)
18. Fuel temperature sensor - (Input)
19. ABS ECU (Rough road signal) - (Input via BeCM)
20. Fuel injectors (8 off) - (Output)
21. Fuel pump relay- (Output)
22. Park/Neutral Switch - (Input)
23. Main power relay - (Input)
24. Ignition supply (Ignition sense) - (Input)
25. Diagnostic connector - (bi-directional)
26. Transfer box ECU - (MIL request input)
27. Knock (KS) sensors (2 off) - (Input)