W/Harness Inspection

P0122 Throttle Position Sensor 1 Signal Circuit Low Input

Inspection/Repair - W/Harness Inspection

Power Circuit Inspection

NOTE:
Check for open or short circuit in harness. Refer to "Signal Waveform & Data" in the "General Information" procedure.

1. Ignition "OFF".
2. Disconnect TPS connector.
3. Ignition "ON" & Engine "OFF"
4. Measure voltage between power terminal of TPS harness connector and chassis ground.

Specification : Approx. 5 V




5. Is voltage within the specification?






Signal Circuit Inspection

NOTE:
Check for open or short circuit in harness. Refer to "Signal Waveform & Data" in the "General Information" procedure.

1. Measure voltage between signal terminal of the sensor harness connector and chassis ground.

Specification : Approx. 5 V




2. Is voltage within the specification?






Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness(es) 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?