P060D SATURN - Internal Control Module Accelerator Pedal Position Performance
- Faulty Accelerator Pedal Position (APP) Sensor (s)
- Accelerator Pedal Position (APP) Sensor (s) harness is open or shorted
- Accelerator Pedal Position (APP) Sensor (s) poor electrical connection
- Engine Light ON (or Service Engine Soon Warning Light)
P060d Saturn DescriptionThe Throttle Actuator Control (TAC) system uses two Accelerator Pedal Position (APP) sensors to monitor the pedal position. Two processors are also used to monitor the TAC system data. The engine control module (ECM) performs an intrusive test in order to detect that the APP signals are not shorted together. The ECM accomplishes this by pulling the APP sensor 2 low momentarily and looking for sensor 1 to also be low. The TAC system also performs this test on the throttle position (TP) sensors. This diagnostic monitors the transistor used to pull one pedal and one throttle sensor to ground simultaneously. Additionally, Both processors monitor each other's data to verify that the indicated APP calculation is correct.
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