Operation CHARM: Car repair manuals for everyone.
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Electronic Control Modules






OPERATION

The PCM supplies two regulated 5 volts supplies - a 5V primary and a 5V secondary (auxiliary) to the following sensors:

- Camshaft Position Sensor (5V secondary)
- Crankshaft Position Sensor (5V primary)
- EGR Position feedback sensor (5V secondary) (if equipped)
- Engine coolant temperature sensor (connected to 5V internal via a pullup resistor)
- Inlet Air Temperature Sensor (connected to 5V internal via a pullup resistor)
- Knock sensor (connected to 5V internal via a pullup resistor)
- Manifold absolute pressure sensor (5V secondary)
- Oil Pressure Switch (connected to 5V internal via pullup resistor)
- Pedal Value Sensor #1 (5V Primary)
- Pedal Value Sensor #2 (5V Secondary)
- SRV Position Feedback Sensor (5V Secondary)
- Throttle Position Sensors (5V Primary)
- Variable Line Pressure Sensor (5V Secondary)