Trouble Code Display

After diagnostic mode is entered, all trouble codes stored in memory will be displayed. All ECM codes are prefixed with an "E" (i.e. E013, E014, etc.). Lowest numbered ECM codes will be displayed first, followed by higher numbered codes. If no ECM codes are stored, a "NO ECM CODES" message will be displayed.

Following the highest numbered ECM code or the "NO ECM CODES" message, the BCM codes will be displayed. All BCM codes will be prefixed with a "B" (i.e. B013, B014 etc.) and displayed in ascending order as with ECM codes. If no BCM codes are stored, a "NO BCM CODES" message will be displayed.

Any ECM or BCM codes will also be accompanied by the words "CURRENT" or "HISTORY". A "history" code indicates an intermittent failure, a "current" code indicates that a fault still exists (current failure). If the "LO" button on the CCDIC is pressed, at any time DURING display of trouble codes, the display of trouble codes will be by-passed.

If no trouble codes are present, diagnosis of the DFI system may be performed using either of 2 methods. Proceed to the DFI TESTS W/O CODES article for SYMPTOM DIAGNOSIS of the DFI system using noticeable driveability symptoms, or proceed to the appropriate DFI system or component PERFORMANCE CHART in the DFI SYS/COMPONENT TESTS to determine further action necessary to diagnose a specific suspected DFI subsystem.