Fault Code 6

Fig. 12 ATC wiring harness and lead connectors:

1. Remove ATC control, then disconnect control electrical connector and measure resistance between pins 2 and 12. If resistance does not measure 2600-2800 ohms, proceed to step 2. If resistance is as specified, replace computer control.
2. Disconnect PVM electrical connector and check for continuity between ATC control pin 2 and PVM pin 13. If continuity exists, replace PVM. If continuity does not exist, repair circuit and recheck system operation.