W/Harness Inspection

Power Supply Circuit Inspection

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

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




5. Is voltage within the specification ?
YES
1) Go to "Signal Circuit Inspection" procedure.
NO
1) Possibility of open or short to ground in 5V reference circuit. Repair as necessary and go to "Verification of Vehicle Repair" procedure

Signal Circuit Inspection

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

1. Check the signal circuit for short to ground
(1) Measure resistance between terminal 5 of the sensor harness connector and chassis ground
A. Specification: Infinite




(2) Is resistance within the specification ?
YES
1) Go to next step as below
NO
1) Check the short to ground in signal circuit.
Repair as necessary and go to "Verification of Vehicle Repair" procedure
2. Check the signal circuit for open
(1) Disconnect ECM connector
(2) Measure resistance between terminals 5 of the sensor harness connector and 11 of the ECM harness connector
A. Specification: 0 Ohm




(3) Is resistance within the specification ?
YES
1) Go to next step as below
NO
1) Check the open in signal circuit.
Repair as necessary and go to "Verification of Vehicle Repair" procedure

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 ?
YES
1) Repair as necessary and go to "Verification of Vehicle Repair" procedure
NO
1) Go to Component Inspection