Test Description

WARNING: This page is about a different car, the 1995 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Test numbers refer to numbers on diagnostic chart.

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

Fig 1: Code 68 Schematic (Corvette) A/C Relay Circuit Shorted

Fig 2: Code 68 Diagnostic Flow Chart (Corvette) A/C Relay Circuit Shorted