Diagnostics Mode
- Ensure vehicle is in feature customization mode. See FEATURE CUSTOMIZATION MODE . Turn ignition switch to OFF, then to ACC position within one second.
- To confirm BCM has entered diagnostic mode, ensure all vehicle doors are closed. Open, then close any door. Fasten, then release driver's seat belt. A chime should sound when door is opened and when driver's seat belt is fastened. If chime is not heard when these functions are performed, turn ignition switch to OFF position and go to step 1 . If BCM does not enter diagnostic mode after a second attempt, go to BCM DIAGNOSTIC SYSTEM CHECK under SYSTEM TESTS.
- When BCM enters diagnostic mode, seat belt indicator will flash and chime will sound to indicate any stored Diagnostic Trouble Codes (DTCs). If more than one DTC exists, codes will be flashed in sequence, with a 2-second pause between codes. DTCs will repeat 3 times.
- Record any existing DTCs, then perform appropriate test procedure. See BCM DTC DEFINITIONS table. After DTC has been repaired, clear DTCs. See CLEARING DTCs .
- After DTCs have been displayed, BCM will enter input/output test. See INPUT/OUTPUT DIAGNOSTICS . To exit diagnostic mode, see EXITING DIAGNOSTICS .
BCM DTC DEFINITIONS (1)
| DTC | Description | ||
|---|---|---|---|
| 1 | Seat Belt Indicator Light Circuit (Shorted To Battery Voltage Or Ground) | ||
| 2 | Protected Battery Feed To Courtesy Lights (Shorted To Battery Voltage Or Ground) | ||
| 3 | Courtesy Lights Ground Circuit (Shorted To Battery Voltage) | ||
| 4 | Retained Accessory Power (RAP) Control Circuit (Shorted To Battery Voltage Or Ground) | ||
| 6 | Theft Deterrent Relay Control Circuit (Shorted To Battery Voltage Or Ground) | ||
| 7 | Horn Relay Control Circuit (Shorted To Battery Voltage Or Ground) | ||
| 8 | Keyless Entry Circuit (Open, Shorted To Battery Voltage Or Ground) | ||
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