Possible Causes
| Possible Causes |
|---|
| (G31) AAT SIGNAL CIRCUIT SHORTED TO VOLTAGE |
| (G31) AAT SIGNAL CIRCUIT OPEN |
| (G931) SENSOR GROUND CIRCUIT OPEN |
| AMBIENT AIR TEMPERATURE SENSOR |
| FRONT CONTROL MODULE (FCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .