Important: DO NOT replace the body control module (BCM) unless a diagnostic trouble code (DTC) remains current after all the DTC tables have been executed. DO NOT replace the BCM based on history codes.
The BCM has the following characteristics:| • | Connected to the class 2 serial data link |
| • | Capable of setting DTCs |
Diagnostic Trouble Code | Explanation |
|---|---|
Automatic Light Control | |
| ALC Headlamp System Fault |
| ALC Headlamp Relay Output short to ground/open |
| ALC Headlamp Relay Output short to Battery |
| ALC Parklamp System Fault |
| ALC Parklamp Relay Output short to ground/open |
| ALC Parklamp Relay Output short to Battery |
| Ambient Light Sensor short to ground/open |
| Ambient Light Sensor short to Battery |
Class 2 Serial Data | |
| Loss of Class 2 Serial Data Fault (General) |
| Powertrain Control Module (PCM) Class 2 Serial Data State of Health (SOH) Fault |
| Electronic Brake Control Module (EBCM) Class 2 Serial Data State of Health (SOH) Fault |
controller Memory | |
| Internal body control module (BCM) Fault Detected |
| Vehicle option configuration required |
Daytime Running Lamps | |
| DRL Error |
| DRL Relay Output short to ground/open |
| DRL Relay Output short to Battery |
Foglamps | |
| Front Foglamp Relay Output short to ground/open |
| Front Foglamp Relay Output short to Battery |
Fuel Sender | |
| Fuel Level Sensor Signal shorted to ground |
| Fuel Level Sensor Signal open/short to Battery |
Interior Lighting Control | |
| Interior Lamp Control Output short to Battery |
Inputs | |
| Key in Ignition Fault |
| Ignition 0 Fault |
| Ignition 1 Fault (with Engine running) |
| Ignition 3 Fault |
Passlock® Theft Deterrent Refer to Theft Deterrent System | |
| Passlock™ Power Output short to ground |
| Passlock™ Power Output short to Battery |
| Passlock™ Signal Data shorted to ground |
| Passlock™ Signal Data open/short to Battery |
| Passlock™ Cylinder Data incorrect |
| BCM in learn mode (current code only) |
| Tamper mode enabled |
Serial Peripheral Interface (SPI) | |
| Invalid BCM transmitted Serial Peripheral Interface (SPI) data |
| Invalid Instrument Cluster transmitted Serial Peripheral Interface (SPI) data |
| Serial Peripheral Interface (SPI) data input low |
| Serial Peripheral Interface (SPI) data input high |
| Serial Peripheral Interface (SPI) data output low |
| Serial Peripheral Interface (SPI) data output high |
| Serial Peripheral Interface (SPI) Clock output low |
| Serial Peripheral Interface (SPI) Clock output high |
Volts Telltale | |
| Generator L-terminal low |
| Generator L-terminal high |
| Generator F-terminal low |
| Generator F-terminal high |
