A/T Gear Position Indicator Circuit Troubleshooting
A/T Gear Position Indicator Circuit TroubleshootingSymptom: A/T gear position indicator does not indicate the shift lever position, the D indicator does not blink, and no transmission range switch, CAN line DTCs are indicated.
1. Check the indicator drive circuit and communication line in the gauge control module with the self-diagnostic procedure of the gauge control module.
Is the system OK?
YES - Go to step 2.
NO - Record the ODO data in the old gauge control module, and replace the gauge control module. Input the old ODO data in the new gauge control module with the HDS.
2. Remove the gauge control module.
3. Turn the ignition switch ON (II).
4. Measure the voltage between gauge control module connector terminal B2 and body ground. The shift lever can be in any position.
Is there battery voltage?
YES - Faulty A/T gear position indicator in the gauge control module, replace the gauge control module.
NO - Go to step 5.
5. Measure the voltage between PCM connector terminal C21 and body ground.
Is there battery voltage?
YES - Repair open or short in the wire between PCM connector terminal C21 and the gauge control module connector terminal B2.
NO - Check for loose terminal fit in the PCM connectors. If necessary, substitute a known-good PCM and recheck.