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 18 - 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. Pick-up point-air conditioning circuit (load input)
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. Injectors - 1 to 8
24. Pick-up point EFI warning symbol (instrument panel)

= = = Denotes screened ground

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