Possible Causes
| Possible Causes |
|---|
| (C18) A/C PRESSURE SIGNAL CIRCUIT SHORTED TO VOLTAGE |
| (C18) A/C PRESSURE SIGNAL CIRCUIT OPEN |
| (C18) A/C PRESSURE SIGNAL CIRCUIT SHORTED TO THE (T103) 5-VOLT SUPPLY CIRCUIT |
| (G180) SENSOR RETURN CIRCUIT OPEN |
| A/C PRESSURE TRANSDUCER |
| FRONT CONTROL MODULE (FCM) |
WARNING:
On vehicles equipped with the high voltage system, you must thoroughly read and follow all High Voltage Safety procedures. In addition, before performing any diagnostic or service procedure near a high voltage component, you must perform the High Voltage Power Down. Failure to follow these instructions may result in possible serious or fatal injury. Refer to Electrical - Engine Systems/Battery System - Warning
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .