Trouble Code Display

WARNING: This page is about a different car, the 1988 Cadillac Allante and 1987 Cadillac Allante. However, it is still accessible from the selected car via links, so may be relevant.

After "Service Mode" is entered any "Trouble Codes" stored in computer memory will be displayed. ECM codes will be displayed first. If no ECM trouble codes are stored, a "NO ECM CODES" message will be displayed. All ECM codes will be prefixed with a "E" (i.e. E013, E014, etc.).

The lowest numbered ECM code will be displayed first followed by progressively higher numbered codes present. Following the highest ECM code present or the "NO ECM CODES" message, BCM codes will be displayed. All BCM codes will be prefixed with a "B" (i.e. B110, B 111, etc.).

If no BCM Trouble Codes are stored "NO BCM CODES" message will be displayed. After the completion of the BCM code display any set lighting codes will follow. All lighting codes will be prefixed with a "L". If no lighting codes have been set, the message "No Lighting Codes" will be displayed.

Any ECM, BCM, or lighting codes displayed will also be accompanied by "Current" or "History". "History" indicates the failure was not present the last time the code was tested and "Current" indicates the fault still exists. At any time during the display of ECM or BCM codes, if the "LO" button on the CCP is depressed, the display of codes will be bypassed. At any time during the display of trouble codes, if the "Reset" button on the DIC is depressed the system will exit "Service Mode" and go back to normal vehicle operation.