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. 5 V
Is the measured value within specification?
YES
- Go to "GROUND CIRCUIT INSPECTION " procedure.
NO
- Repair open or short in power circuit, and then go to "Verification of Vehicle Repair " procedure.
■ Ground Circuit Inspection
1. Ignition "OFF".
2. Disconnect Battery (-) terminal.
3. Refer to ACCELERATOR POSITION SENSOR (APS) and ENGINE CONTROL MODULE (ECM) and disconnect Accel Pedal Position Sensor and PCM connector.
4. Measure resistance between Pin No. 2 (Ground) terminal of Accel Pedal Position Sensor harness connector and Pin No. 47 (Ground) terminal of PCM harness connector.
  Specification: Approx. below 1 Ω
5. Connect PCM connector.
6. Measure resistance between Pin No. 2 (Ground) terminal of Accel Pedal Position Sensor harness connector and chassis ground.
  Specification: Approx. below 1 Ω
7. Is the measured value within specification?
  YES
  - Go to "SIGNAL CIRCUIT INSPECTION " procedure.
  NO
  - Repair open or short in ground circuit, and then go to "Verification of Vehicle Repair " procedure.
■ Signal Circuit Inspection
1. Ignition "OFF"
2. Disconnect Battery (-) terminal.
3. Refer to ACCELERATOR POSITION SENSOR (APS) and ENGINE CONTROL MODULE (ECM) and disconnect Accel Pedal Position Sensor and PCM connector.
4. Measure resistance between Pin No. 3 (Signal) terminal of Accel Pedal Position Sensor harness connector and Pin No. 65 (Signal) terminal of PCM harness connector.
  Specification: Approx. below 1 Ω
5. Is the 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.