1419-00

1419-00 A/C COMPRESSOR CLUTCH CIRCUIT





- When Monitored: Engine Running with the A/C on.

- Set Condition: The A/C Heater Control Module detects an A/C Compressor malfunction.





Diagnostic Test

1. TEST THE A/C COMPRESSOR CLUTCH





Turn the ignition off.

Disconnect the inline connector C106 in the underhood relay control module compartment.

NOTE: Check connector - Clean/repair as necessary.

Using a jumper wire to battery power, energize the A/C Compressor clutch.

Does the A/C Compressor clutch energize?

Yes

- Go to 2

No

- Go to 3

2. MEASURE THE RESISTANCE OF THE A/C COMPRESSOR CLUTCH SIGNAL CIRCUIT





With the ignition off.

Disconnect the A/C Heater Control Module harness connector.

NOTE: Check connector - Clean/repair as necessary.

Measure the resistance of the A/C Compressor Clutch signal circuit from the inline connector C106 to the A/C Heater Control Module harness connector.

Is the resistance below 5.0 ohms?

Yes

- Replace the A/C Heater Control Module.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- Repair the A/C Compressor Clutch signal circuit for an open.
- Perform BODY VERIFICATION TEST. Body Verification Test

3. MEASURE THE RESISTANCE OF THE A/C COMPRESSOR CLUTCH SIGNAL CIRCUIT





With the ignition off.

Disconnect the A/C Compressor Clutch connector.

NOTE: Check connector - Clean/repair as necessary.

Measure the resistance of the A/C Compressor Clutch signal circuit from the inline connector C106 to the A/C Compressor Clutch connector.

Is the resistance below 5.0 ohms?

Yes

- Replace the A/C Compressor Clutch.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- Repair the A/C Compressor Clutch signal circuit for an open.
- Perform BODY VERIFICATION TEST. Body Verification Test