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 the 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 the system failure was not present the last time the code was accessed.
- For example: code 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 the communication link between a component and the 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 EECP (Touch RTN key on CRT monitor).
BCM TROUBLE CODES
| Code | Circuit Affected |
|---|---|
| B110 | Outside Temperature Sensor Circuit |
| B111 | A/C High Side Temperature Sensor |
| B112 | A/C Low Side Temperature Sensor |
| B113 | In-Car Temperature Sensor Circuit |
| B115 | Sunload Sensor Circuit |
| B119 | Twilight Photocell Circuit |
| B120 | Twilight Delay Switch Pot Circuit |
| B121 | Twilight Enable Switch Circuit |
| B122 | Panel Dimming Switch |
| B123 | Courtesy Lamp Switch Circuit |
| B124 | Vehicle Speed Sensor Circuit |
| B127 | PRNDD21 Sensor |
| B132 | Engine Oil Pressure Sensor Circuit |
| B140 | Phone System Problem (CRT equipped) |
| B332 | Loss of Compass Data to BCM (CRT equipped) |
| B333 | Loss of SIR Data to BCM |
| B334 | Loss of ECM Data to BCM |
| B335 | Loss of ECC Data or CRTM Data to BCM |
| B336 | Loss of IPC Data to BCM |
| B337 | Loss of Programmer Data to BCM |
| B410 | Charging System Problem |
| B411 | Battery Voltage Too Low |
| B412 | Battery Voltage Too High |
| B420 | Relay Circuits |
| B440 | HVAC-Air Mix Door Circuit |
| B446, 447 & 448 | Low Refrigerant Pressure |
| B449 | HVAC-High Side Temperature Too High |
| B450 | HVAC-Coolant Temperature Too High |
| B482 | Anti-Lock Pressure |
| B552 | BCM Keep Alive Memory Error |
| B556 | Odometer (EE) PROM Error |
| B660 | Cruise Control Not in Drive |
| B663 | Cruise - Vehicle Speed Too High Above Set Speed |
| B664 | Cruise Acceleration Too High |
| B667 | Set/Coast or Resume/Accel Switch Shorted |
| B671 | Cruise - Servo Position Sensor Circuit |
| B672 | Cruise - Vent Solenoid Circuit |
| B673 | Cruise - Vacuum Solenoid Circuit |
| B710 | CTRC to CTRM Communication Failure (CRT equipped) |
NOTE:
To repeat trouble code display sequence, depress OFF button on ECC panel of NON-CRT equipped vehicles. On CRT equipped vehicles, touch LEVL key on the CRT monitor panel.