APS1 Circuit Inspection

Power Circuit Inspection

Ignition "OFF"
Refer to "ACCELERATOR POSITION SENSOR (APS) " and disconnect Accel Pedal Position Sensor connector.
Ignition "ON"
Measure voltage between Pin No. 4 (Power) terminal of Accel Pedal Position Sensor harness connector and chassis ground.
Specification: Approx. 5V
Is measured value within specification?
YES
- Go to "next" procedure.
NO
- Repair open or short in power circuit, and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

Ground Circuit Inspection

Ignition "OFF"
Disconnect Battery (-) terminal.
Refer to "ACCELERATOR POSITION SENSOR (APS) " and "ENGINE CONTROL MODULE (ECM) " and disconnect Accel Pedal Position Sensor and PCM connector.
Measure resistance between Pin No. 2 (Ground) terminal of Accel Pedal Position Sensor harness connector and Pin No. 47 (Ground) terminal of ECM/PCM harness connector.
Specification: Approx. below 1Ω
Connect PCM connector.
Measure resistance between Pin No. 2 (Ground) terminal of Accel Pedal Position Sensor harness connector and chassis ground.
Specification: Approx. below 1Ω
Is measured value within specification?
YES
- Go to "next" procedure.
NO
- Repair open or short in ground circuit, and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

Signal Circuit Inspection

Ignition "OFF"
Disconnect Battery (-) terminal.
Refer to "ACCELERATOR POSITION SENSOR (APS) " and "ENGINE CONTROL MODULE (ECM) " and disconnect Accel Pedal Position Sensor and PCM connector.
Measure resistance between Pin No. 3 (Signal) terminal of Accel Pedal Position Sensor harness connector and Pin No. 65 (Signal) terminal of ECM/PCM harness connector.
Specification: Approx. below 1Ω
Is measured value within specification?
YES
- Go to "APS2 CIRCUIT INSPECTION " procedure.
NO
- Repair open or short in ground circuit, and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.