PCM Inactive Background Fault

1994 PCED OBDI-A

SECTION 18A: Diesel Diagnosis — 7.3L DI Engine

AJ: PCM Inactive Background Fault

Note: If DTC 523 is retrieved with other diagnostic codes, service all other codes first.

Is DTC 523 still present after all other codes have been serviced?

Yes	No
REPLACE PCM.	System OK. RERUN Scan Tool Diagnostic Test to see if there are any other stored codes.