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

1. Check voltage
(1) IG "OFF" and disconnect TPS connector.
(2) IG "ON and ENG "OFF"
(3) Measure voltage between terminal 6 of TPS harness connector and chassis ground.
A. Specification : Approx. 0V




(4) Is the measured voltage within specification?
YES
- Go to "Ground Circuit Inspection" procedure.
NO
- Go to "Check short to battery in harness" as follows.
2. Check short to battery in harness
(1) IG "OFF" and disconnect TPS connector and PCM connector.
(2) Measure resistance between terminals 1 and 6 of TPS harness connector.
(3) Measure resistance between terminals 4 and 6 of TPS harness connector.
(4) Measure resistance between terminals 2 and 6 of TPS harness connector.
(5) Measure resistance between terminals 3 and 6 of TPS harness connector.
A. Specification : Infinite




(6) Is the measured resistance within specification?
YES
- Go to "Ground Circuit Inspection" procedure.
NO
- Repair short to battery in harness, and go to "Verification of Vehicle Repair" procedure.

Ground Circuit inspection

1. IG "OFF" and disconnect TPS connector.
2. IG "ON" and ENG "OFF"
3. Measure voltage between terminal 1 of TPS harness connector and chassis ground.
4. Measure voltage between terminals 1 and 5 of TPS harness connector.
A. Specification : Measurement "A" - Measurement 'B' = Approx. below 200mV








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