Code 68, A/C Relay Circuit Shorted: Notes

When PCM detects A/C has been requested, PCM will activate A/C clutch relay. When relay is activated, voltage should be present at both A/C compressor clutch and A/C clutch status terminal at PCM. If PCM detects voltage on A/C status line when A/C has not been commanded on, Code 68 will set. A short to voltage anywhere on A/C status line, or stuck relay contacts, will set Code 68. When Code 68 is set, PCM does not turn on SERVICE ENGINE SOON light.

1. A/C must be off while performing test.
2. This step will isolate ignition feed portion of circuit from clutch circuit.
3. If Code 68 reappears at this step, PCM is internally shorted to voltage.