Compressor Clutch Relay: Testing and Inspection

*** UPDATED BY TSB # 9113003, DATED FEBRUARY 1991
There are two different wiring harnesses used on this vehicle. A poor connection at a crimp may be causing an inoperative A/C compressor. Refer to the TSB for further information.

Air Conditioner Relay Location:

To test the Air Conditioning Relay, located in the engine compartment, proceed as follows.

Fig. 6 Condenser Fan Relay Terminal Identification:

Air Conditioner Control System:

1. Remove the Air Conditioning Relay.
2. Test terminals L and B for continuity, there should be no continuity.
3. Apply 12vdc power across terminals S1 and S2.
4. Test terminals L and B for continuity, there should be continuity.
5. If the relay fails either test replace the relay.

NOTE: In referencing the wiring schematic in ELECTRONIC AND ELECTRICAL DIAGRAMS, the terminals 2 and 4 correlate to terminals L and B as marked on the relay. Additionally terminals 1 and 3 correlate to S1 and S2 as marked on the relay.