Oxygen Sensor: Testing and Inspection

Circuit A142 splices to supply voltage to the fuel injectors and ignition coil.

Circuit K4 splices to supply ground for the signals from the following:
- Camshaft position sensor
- Crankshaft position sensor
- Fuel level sensor
- Intake air temperature sensor
- Throttle position sensor
- Manifold absolute pressure sensor
- Engine coolant temperature sensor
- Speed control switches
- Transmission governor pressure sensor
- Transmission temperature sensor
- Vehicle speed sensor