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
1) Repair as necessary and go to "Verification of Vehicle Repair" procedure
NO
1) Go to "Power Circuit Inspection" procedure

Power Supply Circuit Inspection

1. Connect "A/T SOLENOID VALVE" connector and install device for measuring wave form
2. Turn on the Engine and operate ON/OFF (SCSV-A) SOLENOID VALVE.
3. Measure wave form between terminal"3" of the sensor harness connector and chassis ground.
A. Wave form of ON/OFF SV








4. Is voltage within specifications ?
YES
1) Go to "Signal Circuit Inspection" procedure
NO
1) Check for open in harness. Repair as necessary and Go to "Verification of Vehicle Repair" procedure

Signal Circuit Inspection

Check Signal Circuit Open Inspection
1. Ignition "OFF"
2. Disconnect "A/T SOLENOID VALVE" connector and "PCM/TCM" connector
3. Measure resistance between terminal "3" of the ATM SOLENOID VALVE harness connector and terminal "10" of the PCM/TCM harness connector
A. Specification: Approx. 0 ohms




4. Is resistance within specifications ?
YES
1) Go to "Check signal circuit short Inspection" procedure
NO
1) Check for open in harness. Repair as necessary and Go to "Verification of Vehicle Repair" procedure
Check Signal Circuit Short Inspection
1. Ignition "OFF".
2. Disconnect "A/T SOLENOID VALVE" connector and "PCM/TCM" connector
3. Measure resistance between terminal "3" of the ATM SOLENOID VALVE harness and chassis ground.
A. Specification: Infinite




4. Is resistance within specifications ?
YES
1) Go to "signal circuit ground inspection" procedure
NO
1) Check for short to ground in harness. Repair as necessary and Go to "Verification Vehicle Repair" procedure
Check signal circuit ground inspection
1. Ignition "OFF"".
2. Disconnect "A/T SOLENOID VALVE" connector and "PCM/TCM" connector
3. Measure resistance between terminal "7" of the ATM SOLENOID VALVE harness and chassis ground.
A. Specification: Approx. 0 ohms




4. Is resistance within specifications ?
YES
1) Go to "Component Inspection" procedure
NO
1) Check for short to ground in harness. Repair as necessary and Go to "Verification Vehicle Repair" procedure