Possible Causes
| Possible Causes |
|---|
| (G31) AAT SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE |
| (G31) AAT SIGNAL CIRCUIT OPEN |
| (G931) SENSOR GROUND CIRCUIT OPEN |
| AMBIENT AIR TEMPERATURE SENSOR |
| FRONT CONTROL MODULE |
Always perform PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.