X120 - DTC 1460: Check For Intermittent Open or Short In WAC

Continuous Memory Diagnostic Trouble Code (DTC) 1460 indicates that a WAC circuit failure has occurred during vehicle operation.

NOTE: if vehicle is not equipped with A/C, the WAC circuit is not used and the DTC 1460 can be ignored.

Possible Causes:
- Open or shorted WAC circuit.

- Key Off.

- Scan Tool connected.

- Disconnect A/C Cyclic Pressure Switch.

- Install a jumper wire in the Cyclic Pressure Switch vehicle harness connector (to complete the circuit).

- Key On. Engine Off.

- A/C demand switch On.

- Check WAC circuit for open or short to power while performing the following (the A/C clutch will click on when a fault is detected):
- Shake, wiggle, bend the WAC circuit from the CCRM to the PCM.
- Lightly tap the CCRM to simulate road shock.

- Access Output Test Mode on the Scan Tool. Output Test Mode

- Turn outputs off (this will prevent the WAC circuit from turning off the A/C clutch).

- Check WAC circuit for short to ground while performing the following (the A/C clutch will click off when a fault is detected):
- Shake, wiggle, bend the WAC circuit from the CCRM to the PCM.
- Lightly tap the CCRM to simulate road shock.

- Key Off, A/C off.

- Is a fault indicated?

YES -- ISOLATE fault and SERVICE as necessary. REMOVE jumper wire. RECONNECT all components. Complete PCM reset to clear DTCs. Clearing Diagnostic Trouble Codes

Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes

NO -- GO to Pinpoint Test Step Z1 with the following data: WACA PID and list of Possible Causes. Z1 - Intermittent Test Procedure