W/Harness Inspection

Engine Control
P2138 Throttle/Pedal Position Sensor/Switch D/E Voltage Correlation - Inspection/Repair:_:W/Harness Inspection

Terminal & 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?






Power Circuit Inspection

Check voltage
1. IG "OFF" and disconnect APS connector.
2. IG "ON".
3. Measure voltage between APS1(2) power terminal of APS harness connector and chassis ground.

Specification :Approx. 5V




4. Is the measured voltage within specification?






Signal Circuit Inspection

Check short to ground in harness
1. IG "OFF", disconnect APS connector and ECM connector.
2. Measure resistance between APS1 signal and APS2 signal terminals of APS harness connector.

Specification :Infinite




3. Is the measured voltage within specification?