Compressor Clutch Relay: Testing and Inspection

Fig. 64 Main relay testing:

1. Remove glove box, disconnect wiring harness connector, and remove main relay from evaporator case.
2. Check continuity with ohmmeter Fig. 64. Meter should indicate continuity between terminals 1 and 2, but should indicate no continuity between terminals 3 and 4.
3. Using jumper wires, connect battery voltage across terminals 1 and 2.
4. Ohmmeter should indicate continuity between terminals 3 and 4.