DTC 33, Fuel Enable Circuit (CKT Open Or Shorted To Ground): Testing
- Turn ignition switch to OFF position. Disconnect CCM connector C1. Turn ignition switch to RUN position. Using DVOM, measure voltage between CCM connector C1 terminal B1 and ground. If voltage is not about 5 volts, go to step 3). If voltage is about 5 volts, go to next step.
- Turn ignition switch to OFF position. Check for poor connections at CCM connector. If connections are okay, reconnect CCM connector and all other components. Clear DTCs and check if DTC resets. If DTC resets, replace CCM. If DTC does not reset, problem may be intermittent. Try to recreate fault while performing test by wiggling wiring and connectors. Check for poor connections at all connectors that may be causing intermittent condition.
- Turn ignition switch to OFF position. Disconnect PCM connector C1. Using DVOM, check for continuity between CCM connector C1 terminal B1 and ground. If continuity is present, repair short to ground in fuel enable circuit. If continuity is not present, check for open in fuel enable circuit. If circuit is okay, replace PCM.