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




5. Is voltage within the specification ?
YES
1) Go to next step as below
NO
1) 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 for short to ground circuit
(1) Ignition "OFF"
(2) Measure resistance between terminal 3 of the APS harness connector and chassis ground
A. Specification: Infinite




(3) Is resistance within the specification ?
YES
1) Go to next step as below
NO
1) Repair as necessary and go to "Verification of Vehicle Repair" procedure
2. Check for open in signal circuit
(1) Disconnect ECM connector
(2) Measure resistance between terminals 3 of the APS harness connector and 20 of the ECM harness connector
A. Specification: Approx. 0 Ohm




(3) Is resistance within the specification ?
YES
1) Go to next step as below
NO
1) 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