Operation CHARM: Car repair manuals for everyone.

XB94 - Verify WAC Circuit Is Not Shorted to Ground In PCM



- Key "OFF".

- Powertrain Control Module (PCM) disconnected.

- Reconnect Variable Control Relay Module (VCRM).

- Disconnect A/C clutch.

- Again, connect a non-powered test lamp between the power-to-A/C clutch circuit and the A/C clutch ground circuit at the A/C clutch vehicle harness connector.

- A/C "ON".

- Key "ON".

- Is test lamp on?

Yes -- Replace PCM. Reconnect all components. Re-evaluate symptom.

No -- Replace VCRM. Reconnect all components. Re-evaluate symptom.