Possible Causes
| Possible Causes |
|---|
| (C18) A/C PRESSURE SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE |
| (C18) A/C PRESSURE SIGNAL CIRCUIT OPEN |
| (C18) A/C PRESSURE SIGNAL CIRCUIT SHORTED TO (F891) 5-VOLT SUPPLY CIRCUIT |
| (C918) SENSOR GROUND CIRCUIT OPEN |
| A/C PRESSURE TRANSDUCER |
| FRONT CONTROL MODULE |
Always perform PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.