W/Harness Inspection

Engine

Engine Control - P2123 Throttle/Pedal Position Sensor/Switch D Circuit High - 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
> Repair as necessary and go to "Verification of Vehicle Repair" procedure
NO
> Go to "Signal Circuit Inspection " procedure.

Signal Circuit Inspection

Check short to battery in harness
1. IG "OFF" and disconnect APS connector and PCM connector.
2. Measure resistance between APS 1 signal and APS 1 power terminals of APS harness connector.
3. Measure resistance between APS 1 signal and APS 2 power terminals of APS harness connector.
A. Specification : Infinite




4. Is the measured resistance within specification?
YES
1) Go to "Ground Circuit Inspection" procedure.
NO
1) Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedure.

Ground Circuit inspection

Check open in harness
1. IG "OFF" and disconnect APS connector.
2. IG "ON" and ENG "OFF"
3. Measure voltage between APS 1 power terminal of APS harness connector and chassis ground. (Measurement "A")
4. Measure voltage between APS 1 power and APS 1 ground terminals of APS harness connector. (Measurement "B")
A. Specification : Voltage difference between measurement "A" and "B" is below 200 mV.








5. Is the measured voltage within specification?
YES
1) Go to "Component Inspection" procedure.
NO
1) Repair or replace contact resistance or open in harness and then, go to "Verification of Vehicle Repair" procedure.