Displaying Trouble Codes
- The Electronic Control Module (ECM), Body Control Module (BCM), and Supplemental Inflatable Restraint (SIR) trouble codes automatically display after system enters self-diagnostics. ECM trouble codes are displayed first, followed by BCM trouble codes and then SIR trouble codes.
- All trouble codes appear in an ascending (3-digit) numerical order. ECM codes are prefixed with the letter "E", BCM Codes prefixed with the letter "B", and SIR codes prefixed with the letter "R".
- In addition, all trouble codes are followed by the letter "C" or "H". Letter "C" stands for current and indicates a trouble code related fault presently exists. Letter "H" stands for history and indicates system failure was not present the last time code was accessed.
- For example: E016H is ECM trouble code number 016, set in response to a malfunction that occurred in the past (history). Code B410C is BCM trouble code number 410, set in response to a malfunction that is currently taking place.
- If no ECM, BCM or SIR trouble codes are stored in memory, respectively, a NO E CODE, NO B CODE or NO R CODE message is displayed. Should communication link between a component and ECM or BCM fail, a NO ECM/BCM DATA message will be displayed.
- Trouble code display can be by-passed at any time by pressing FAN DOWN button on ECCP (touching RTN key on CRT monitor).