1000 - 1999: 1419

1419-00 A/C COMPRESSOR CLUTCH CIRCUIT





When Monitored and Set Condition

- When Monitored: Engine Running with the A/C on.
- Set Condition: The A/C Heater Control Module detects an A/C Compressor malfunction.





For a complete HVAC Circuit Diagram HVAC Schematics and Diagrams.

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. Removal.
- 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. A/C Compressor - Removal.
- 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