W/Harness Inspection

P0122 Throttle/Pedal Position Sensor/Switch A Circuit Low Input

Inspection/Repair - W/Harness Inspection

Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness and terminals.
Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?
YES
1) Repair as necessary and go to "Verification of Vehicle Repair" procedure.
NO
1) Go to "Power circuit inspection" procedure.

Power Supply Circuit Inspection

1. Key "OFF".
2. Disconnect TPS connector.
3. Key "ON".
4. Measure the voltage between terminal 2 of TPS harness connector and chassis ground.
A. Specification : Approx. 5 V




5. Is the measured voltage within specifications?
YES
1) Go to "Signal circuit inspection" procedure
NO
1) Check for Open or Short to ground in TPS circuit. Repair as necessary and then go to "Verification of Vehicle Repair" procedure.

Signal Circuit Inspection

1. Key "OFF".
2. Disconnect TPS connector.
3. Key "ON".
4. Measure the voltage between terminal 1 of TPS harness connector and chassis ground.
A. Specification : Approx. 5 V




5. Is the measured voltage within specification?
YES
1) Go to "Component inspection" procedure.
NO
1) Repair Short to ground in signal circuit and go to "Verification of Vehicle Repair" procedure.