Possible Causes
| Possible Causes |
|---|
| (G31) AAT SIGNAL CIRCUIT SHORTED TO GROUND |
| (G31) AAT SIGNAL CIRCUIT SHORTED TO THE (G931) AAT RETURN CIRCUIT |
| EXCESSIVE RESISTANCE IN THE (G31) AAT SIGNAL CIRCUIT |
| AMBIENT AIR TEMPERATURE (AAT) SENSOR |
| TOTALLY INTEGRATED POWER MODULE (TIPM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .