Circuit Over-View

FUEL INJECTION - Circuit Diagram

1. 40 way connector to electronic control unit (ECU)
2. Lambda sensor (left side - bank A)
3. Lambda sensor (right side - bank B)
4. By-pass air valve (stepper motor) (fast idle)
5. Lambda sensor screened ground
6. Fuse C4 - main fuse panel
7. Inertia switch
8. Fuel pump
9. Ignition switch
10. Speed transducer (road speed input)
11. Neutral switch (automatic gearbox) (load input)
12. Main cable connector
13. Battery
14. Diagnostic plug
15. In-line resistor
16. Coil/-ve (engine RPM input)
17. Coolant temperature thermistor (sensor) (input)
18. Fuel temperature thermistor (sensor) (input)
19. Throttle potentiometer
20. Air flow sensor
21. Fuel pump relay
22. Main relay
23. lnjectors - 1 to 8
24. Pick-up point EFI warning symbol (instrument panel)
25. Heated front screen sense
26. Purge control valve
27. 12V from fan relay
28. Air conditioning output control
29. Air conditioning load input
30. Fan relay feed
31. Tune resistor (early vehicles)
32. Heater/air con cable connector
33. Condenser fan timer control
34. Fault display input

= = = Denotes screened ground

NOTE: Reference to left and right side is made when viewing the vehicle from the rear.