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Body Control Module (BCM) Diagnostic System Check

  1. Ensure battery condition, cold cranking amperage and reserve capacity meet specifications. Replace as necessary. Install scan tool to Data Link Connector (DLC). If scan tool powers up, go to next step. If scan tool does not power up, go to SCAN TOOL DOES NOT POWER UP  .
  2. Turn ignition on, engine off. Try to establish scan tool communication with BCM. If communication with BCM is established, go to next step. If communication with BCM is not established, go to SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  .
  3. Select display DTC function for BCM. Record all displayed DTCs and status of displayed DTCs. If DTCs are displayed, go to next step. If no DTCs are displayed, attempt to diagnose malfunctioning system or device by symptom. Go to appropriate article for malfunctioning system or device.
  4. If scan tool displays any DTCs that begin with "U", go to SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  . If scan tool does not display any DTCs that begin with "U", go to next step.
  5. If scan tool displays DTC B1000, B1013 or B1015, go to BODY CONTROL MODULE (BCM) DTC DEFINITIONS  . If scan tool does not display DTC B1000, B1013 or B1015, go to next step.
  6. If scan tool displays DTC B1334, B1339, B1354 or B1422, go to BODY CONTROL MODULE (BCM) DTC DEFINITIONS  . If scan tool does not display DTC B1334, B1339, B1354 or B1422, go to system in which customer concern is addressed.
BODY CONTROL MODULE (BCM) DTC DEFINITIONS

DTC (1) Module Description
B0016 (2) SDM Right Front Passenger Frontal Deployment Loop Resistance Low
B0017 (2) SDM Right Front Passenger Frontal Deployment Loop Open
B0018 (2) SDM Right Front Passenger Frontal Deployment Loop Short To Ground Or Voltage Out Of Range
B0022 (2) SDM Left Front Passenger Frontal Deployment Loop Resistance Low
B0024 (2) SDM Left Front Passenger Frontal Deployment Loop Short To Ground Or Voltage Out Of Range
B0026 (2) SDM Left Front Passenger Frontal Deployment Loop Open
B0040 (2) SDM Left Front Driver Side Deployment Loop Resistance Low
B0041 (2) SDM Left Front Driver Side Deployment Loop Open
B0045 (2) SDM Left Front Side Deployment Loop Short To Ground Or Voltage Out Of Range
B0051 (2) SDM Deployment Commanded
B0053 (2) SDM Deployment Commanded With Loop Malfunctions Present
B0077 (2) SDM Left Front/Driver SIS Malfunction
B0079 (2) SDM Incorrect Left Front/Driver SIS Installed
B0080 (2) SDM Discard Left Front/Driver SIS
B0332 (3) HVAC Outside Air Temperature Sensor Short To Ground
B0333 (3) HVAC Outside Air Temperature Sensor Open
B0337 (3) HVAC Inside Air Temperature Sensor Short To GND
B0338 (3) HVAC Inside Air Temperature Sensor Open
B0348 (3) HVAC Sunload Temperature Sensor Open
B0361 (3) HVAC Left Actuator Feedback Short To GND
B0363 (3) HVAC Left Actuator Feedback Open
B0365 (3) HVAC Right Actuator Feedback Short To GND
B0367 (3) HVAC Right Actuator Feedback Open
B0441 (3) HVAC Left Actuator Out Of Range
B0446 (3) HVAC Right Actuator Out of Range
B0570 (4) IPC Season Odometer Malfunction
B0600 (4) IPC Option Content Failure
B0602 (4) IPC PLL Oscillator Error
B0608 (4) IPC Power Moding Error
B1000  BCM, IPC ECU Malfunction In Body Control Systems
B1001 (2) SDM Option Configuration Error
B1013  BCM Calibration ROM Checksum Error
B1015  BCM VIN Information Error
B1334  BCM Device Power #2 (Low Current #2) Circuit Open
B1339  BCM Device Power #3 Circuit Open
B1354  BCM Device Ground #2 (Chassis Ground #2) Circuit Open
B1422  BCM Device Power Moding Malfunction
B1477  BCM Retained Accessory Power Circuit Low
B1478  BCM Retained Accessory Power Circuit High
B1482  BCM Inadvertent Power Short To Ground
B2533  BCM Front Fog Lamps Control Circuit High
B2552 (REGAL ONLY)  BCM Backup Lamps Control Circuit Low
B2553 (REGAL ONLY)  BCM Backup Lamps Control Circuit High
B2559  BCM Courtesy Lamps Ground Open
B2577  BCM Headlamp Control Circuit Low
B2578  BCM Headlamp Control Circuit High
B2587  BCM Park Lamp Control Circuit Low
B2588  BCM Park Lamp Control Circuit High
B2603  BCM DRL Control #1 Circuit High
B2608  BCM DRL Control #2 Circuit High
B2617  BCM Passenger Compartment Dimming #2 Circuit Low
B2618  BCM Passenger Compartment Dimming #2 Circuit High
B2647  BCM Ambient Light Sensor Circuit Low
B2648  BCM Ambient Light Sensor Circuit High
B2747  BCM Traction Control Switch Circuit Low
B2752 (5) BCM Horn Relay Coil Circuit Low
B2753 (5) BCM Horn Relay Coil Circuit High
B2818  BCM Low Tire Pressure System Reset Circuit Low
B2957 (6) BCM Security System Sensor Data Circuit Low
B2958 (6) BCM Security System Sensor Data Circuit High
B2960 (6) BCM Security System Sensor Data Incorrect But Valid
B3031 (6) BCM Security System Controller In Learn Mode
B3094 (6) BCM No Response From ECM/PCM Received
B3100 (7) BCM Keyless Entry Data Link Circuit Malfunction
B3102 (7) BCM Keyless Entry Data Link Circuit Low
B3103 (7) BCM Keyless Entry Data Link Circuit High
B3106 (7) BCM Keyless Entry Data Link Parity Error
B3267  BCM Decklid Relay Output Short To Ground/Open
B3268  BCM Decklid Relay Output Short To Battery
U1000  BCM, EBCM, IPC, SDM Class 2 Communication Malfunction
U1001-U1254  BCM, EBCM, IPC, SDM Loss Of XXX Communications
U1255  BCM, EBCM, IPC, SDM Class 2 Communication Malfunction
U1300  BCM, EBCM, SDM Class 2 Circuit (Short To Ground)
U1301  BCM, EBCM, SDM Class 2 Circuit (Short To Voltage)
(1) For DTCs beginning with "C", perform diagnostic system check in appropriate BRAKES article. For DTCs beginning with "P", perform OBD diagnostic system check in appropriate ENGINE PERFORMANCE article. For DTCs not listed, refer to system in which customer concern is apparent.
(2) See lemon-25(R) AIR BAG SERVICE & REPAIR MANUAL, DOMESTIC & IMPORTED MODELS.
(3) See appropriate MANUAL or AUTOMATIC A/C-HEATER SYSTEMS article in AIR CONDITIONING & HEATING.
(4) See appropriate INSTRUMENT PANELS article.
(5) See appropriate STEERING COLUMN SWITCHES article.
(6) See appropriate ANTI-THEFT SYSTEMS article.
(7) See appropriate REMOTE KEYLESS ENTRY article.
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