| Table 1: | Body Control Module Scan Tool Data Parameters |
| Table 2: | Body Control Module Scan Tool Output Controls |
Parameter | System State | Expected Value | Definition |
|---|---|---|---|
Operating Conditions: Engine ON | |||
Accy. Relay Command | -- | On | The scan tool displays On or Off. This is the commanded state of the accessory relay. The scan tool displays ON when the BCM provides voltage to the accessory relay control circuit. |
A/C Request | -- | No | The scan tool displays Yes or No. Yes is displayed when the body control module (BCM) receives an input from the HVAC control assembly for an A/C request. |
Ambient Light Sensor | -- | Varies | This displays Volts. The scan tool displays the output voltage of the ambient light sensor based on the intensity of light detected. As the light intensity increases, the sensor displayed voltage decreases. |
Auto. Learn Timer | -- | Varies | The scan tool displays seconds. |
Battery Voltage Signal | -- | Varies | This displays Volts. This parameter displays the amount of battery voltage available to the body control module (BCM). |
Brake Fluid Level Sensor | -- | OK | The scan tool displays OK or Low. The scan tool displays Low if the brake fluid is low. |
BTSI Output | -- | Off | The scan tool displays On or Off. |
Content Theft State | -- | Off | The scan tool displays Off, Pre-arm, Armed, Pre-alarm, Alarm or Tamper. The scan tool displays the current content theft deterrent (CTD) state. |
Courtesy Lamp Output | -- | Off | The scan tool displays On or Off. The scan tool displays ON when the BCM energizes the courtesy lamps supply voltage circuit to illuminate the courtesy lamps. |
Courtesy Lamp PWM Cmd. | -- | Varies | This displays percent. This is the current dimming percentage of the courtesy lamps. |
Courtesy Lamp Switch | -- | Inactive | The scan tool displays Active or Inactive. The scan tool displays ACTIVE when the switch is activated. The BCM uses this data in controlling the operation of the courtesy lamps. |
Crank Voltage | -- | Varies | This displays Volts. This parameter displays the voltage read by BCM, through Ignition Off/Run/Crank signal. |
Dimming Potentiometer | -- | Varies | This displays Volts. The scan tool displays the voltage value indicating the position of the I/P dimmer switch. The scan tool displays 4 volts when the headlamp switch is in the AUTO position and the daytime running lamps (DRL) are ON or the I/P dimmer switch is in the FULL DIM position. The scan tool displays 0 volts when either the park lamps or the headlamps are turned ON and the I/P dimmer switch is in the FULL BRIGHT position. |
Dome Lamp Override Switch | -- | Off | The scan tool displays On or Off. The scan tool displays On when the switch is pressed. The BCM uses this data in controlling the operation of the courtesy lamps. |
Door Lock Output | -- | Off | The scan tool displays On or Off. The door lock relay output from the BCM, where the relay actuating to the lock position is displayed as On. |
Door Lock Relay Fdbk. | -- | Inactive | The scan tool displays Active or Inactive. The door lock relay feedback input to the BCM, where the relay being actuated is displayed as Active. |
Door Unlock Output | -- | Off | The scan tool displays On or Off. The door unlock relay output from the body control module (BCM), where the relay actuating to the unlock position is displayed as On. |
Driver Door Ajar Sw. | -- | Door Closed | The scan tool displays Door Ajar or Door Closed. When the driver door is open or latched and not completely closed, the scan tool will display Door Ajar. |
DRL Status | -- | On | The scan tool displays On or Off. This output of the BCM is displayed as ON when the BCM turns ON the DRL lamps. |
Drvr. Door Unlock Cmd. | -- | Off | The scan tool displays On or Off. This is the state of the driver door unlock system. |
Fog Lamp Relay Cmd. | -- | Off | The scan tool displays On or Off. The scan tool displays ON when the BCM energizes the fog lamp relay to activate the fog lamps. |
Front Fog Lamp Switch | -- | Inactive | The scan tool displays Active or Inactive. When the fog lamp switch is placed in the ON position, the scan tool will display Active. |
Front Wipers Active | -- | No | The scan tool displays Yes or No. The scan tool displays Yes after approximately the first 3 cycles of the wiper blades. The BCM uses this data in controlling the headlamps during wiper activated headlamp (WAH) mode. |
Hazard Lamp Switch | -- | Inactive | The scan tool displays Active or Inactive. When the hazard switch is placed in the ON position, the scan tool will display Active. |
Headlamp Off Switch | -- | Active | The scan tool displays Active or Inactive. The scan tool displays the position of the headlamp switch. The scan tool displays Active when the headlamp switch is in the Off position. The BCM uses this data in controlling the operation of the headlamps. |
Headlamp On Switch | -- | Inactive | The scan tool displays Active or Inactive. The scan tool displays the position of the headlamp switch. The scan tool displays Active when the headlamp switch is in the ON position. The BCM uses this data in controlling the operation of the headlamps. |
Headlamp Relay | -- | Off | The scan tool displays On or Off. The scan tool displays ON when the BCM grounds the headlamp relay to activate the headlamps. |
High Beam Relay Command | -- | Off | The scan tool displays On or Off. The scan tool displays On when the BCM has activated the high beam relay to illuminate the high beam headlamps. |
High Beam Select Switch | -- | Inactive | The scan tool displays Active or Inactive. When the headlamp dimmer switch is placed in the HIGH position, the scan tool will display Active. |
Horn Relay Command | -- | Off | The scan tool displays On or Off. The horn output indicates the state that the control module has commanded for the relay. |
Ignition Accessory | -- | Active | The scan tool displays Active or Inactive. The BCM uses this data in order to determine the position of the ignition switch. Active is displayed when the ignition switch is in the Run or Accy positions. |
Ign. Off/Run/Crank | -- | Active | The scan tool displays Active or Inactive. The scan tool displays the position of the ignition switch. The scan tool displays Active when the ignition switch is in the RUN or CRANK position. |
Ignition 1 Run/Crank | -- | Active | The scan tool displays Active or Inactive. The scan tool displays the position of the ignition switch. The scan tool displays Active when the ignition switch is in the RUN or CRANK position. |
Ignition 3 | -- | Active | The scan tool displays Active or Inactive. The scan tool displays the state of the Ignition 3 output. |
Inadv. Power Cmd. 1 | -- | On | The scan tool displays On or Off. The scan tool displays the state of the inadvertent power battery rundown protection feature of the BCM. The scan tool displays On when all inadvertent power circuits are functioning normally. |
Inadv. Power Cmd. 2 | -- | On | The scan tool displays On or Off. The scan tool displays the state of the inadvertent power battery rundown protection feature of the BCM. The scan tool displays On when all inadvertent power circuits are functioning normally. |
LF Pressure Sensor ID | -- | Varies | The scan tool displays a number up to 8 digits in length, or an asterisk. A number displayed indicates the tire pressure sensor unique identification (Id) code, and that it has been learned into the BCM memory. An asterisk indicates the sensors Id code has not been learned. |
LF Pressure Sensor Mode | -- | Varies | The scan tool displays [N/A], Learn, Stationary, Re-measure, Wake, Low Batt., or Drive. Stationary indicates the sensors internal roll switch is open and the sensor has made its stationary transmission which occurs once every 60 minutes from the last stationary transmission. Wake indicates the sensor is transitioning to drive mode, in this mode the sensor has detected an initial roll switch closure. Drive indicates the sensors roll switch has been closed for at least 10 seconds and the sensor is transmitting once every 60 seconds. Re-Measure indicates the sensor has detected a 1.6 psi change in tire pressure. Learn indicates the sensor has been activated by a low frequency transmission. Low Bat indicates the sensor's internal battery charge level is low. N/A indicates the sensor is in a mode not supported by the scan tool. |
LF Tire Pressure | -- | Varies | The scan tool displays kPa or PSI. The scan tool displays 0-344 kPa (0-51 psi). The actual pressure of the indicated tire. |
LF Turn/Hazard Lamp Command | -- | Off | The scan tool displays On or Off. The scan tool displays ON when the BCM activates the left front turn/hazard supply voltage circuit. |
LR Pressure Sensor ID | -- | Varies | The scan tool displays a number up to 8 digits in length, or an asterisk. A number displayed indicates the tire pressure sensor unique identification (Id) code, and that it has been learned into the BCM memory. An asterisk indicates the sensors Id code has not been learned. |
LR Pressure Sensor Mode | -- | Varies | The scan tool displays [N/A], Learn, Stationary, Re-measure, Wake, Low Batt., or Drive. Stationary indicates the sensors internal roll switch is open and the sensor has made its stationary transmission which occurs once every 60 minutes from the last stationary transmission. Wake indicates the sensor is transitioning to drive mode, in this mode the sensor has detected an initial roll switch closure. Drive indicates the sensors roll switch has been closed for at least 10 seconds and the sensor is transmitting once every 60 seconds. Re-Measure indicates the sensor has detected a 1.6 psi change in tire pressure. Learn indicates the sensor has been activated by a low frequency transmission. Low Bat indicates the sensor's internal battery charge level is low. N/A indicates the sensor is in a mode not supported by the scan tool. |
LR Tire Pressure | -- | Varies | The scan tool displays kPa or PSI. The scan tool displays 0-344 kPa (0-51 psi). The actual pressure of the indicated tire. |
LR Turn/Hazard Lamp Command | -- | Off | The scan tool displays On or Off. The scan tool displays ON when the BCM activates the left rear turn/hazard supply voltage circuit. |
No. of Fob's Programmed | -- | Varies | The scan tool displays Fob 0-4. |
Park Brake Switch | -- | Released | The scan tool displays Applied or Released. When the park brake is applied, the scan tool will display Applied. |
Park Lamps Signal | -- | Off | The scan tool displays On or Off. The scan tool displays ON when the BCM activates the park lamp relay to illuminate the park lamps. |
Park Lamp Switch | -- | Off | The scan tool displays On or Off. When the headlamp switch is in the PARK position, the scan tool will display ON. |
Passenger Door Ajar Sw. | -- | Door Closed | The scan tool displays Door Closed or Door Ajar. When the front passenger door is open or latched and not completely closed, the scan tool will display Door Ajar. |
Passlock State | -- | Varies | The scan tool displays Ignition Off, Normal Decision, Learn Passlock, Tamper, Monitor Passlock, Fail Enabled, Fail Enable Dec, Seedkey Lrn Pend, Seedkey Learn, Auto Learn Pend, or Auto Learn. |
Rear Defog Relay Cmd. | -- | Off | The scan tool displays On or Off. The body control module will indicate if it is commanding the rear defog relay On or Off. |
Rear Defog Switch | -- | Inactive | The scan tool displays Active or Inactive. The BCM receives an input from the HVAC control head indicating Active when the rear defog system is turned On. |
Rear Fog Lamp Relay Cmd. | -- | Off | The scan tool displays On or Off. This output of the BCM is displayed as ON when the rear fog lamps are turned ON. |
Rear Fog Lamp Switch | -- | Off | The scan tool displays Active or Inactive. When the fog lamp switch is placed in the ON position, the scan tool will display Active. |
RF Pressure Sensor ID | -- | Varies | The scan tool displays a number up to 8 digits in length, or an asterisk. A number displayed indicates the tire pressure sensor unique identification (Id) code, and that it has been learned into the BCM memory. An asterisk indicates the sensors Id code has not been learned. |
RF Pressure Sensor Mode | -- | Varies | The scan tool displays [N/A], Learn, Stationary, Re-measure, Wake, Low Batt., or Drive. Stationary indicates the sensors internal roll switch is open and the sensor has made its stationary transmission which occurs once every 60 minutes from the last stationary transmission. Wake indicates the sensor is transitioning to drive mode, in this mode the sensor has detected an initial roll switch closure. Drive indicates the sensors roll switch has been closed for at least 10 seconds and the sensor is transmitting once every 60 seconds. Re-Measure indicates the sensor has detected a 1.6 psi change in tire pressure. Learn indicates the sensor has been activated by a low frequency transmission. Low Bat indicates the sensor's internal battery charge level is low. N/A indicates the sensor is in a mode not supported by the scan tool. |
RF Tire Pressure | -- | Varies | The scan tool displays kPa or PSI. The scan tool displays 0-344 kPa (0-51 psi). The actual pressure of the indicated tire. |
RF Turn/Hazard Lamp Command | -- | Off | The scan tool displays On or Off. The scan tool displays ON when the BCM activates the right front turn/hazard supply voltage circuit. |
RR Pressure Sensor ID | -- | Varies | The scan tool displays a number up to 8 digits in length, or an asterisk. A number displayed indicates the tire pressure sensor unique identification (Id) code, and that it has been learned into the BCM memory. An asterisk indicates the sensors Id code has not been learned. |
RR Pressure Sensor Mode | -- | Varies | The scan tool displays [N/A], Learn, Stationary, Re-measure, Wake, Low Batt., or Drive. Stationary indicates the sensors internal roll switch is open and the sensor has made its stationary transmission which occurs once every 60 minutes from the last stationary transmission. Wake indicates the sensor is transitioning to drive mode, in this mode the sensor has detected an initial roll switch closure. Drive indicates the sensors roll switch has been closed for at least 10 seconds and the sensor is transmitting once every 60 seconds. Re-Measure indicates the sensor has detected a 1.6 psi change in tire pressure. Learn indicates the sensor has been activated by a low frequency transmission. Low Bat indicates the sensor's internal battery charge level is low. N/A indicates the sensor is in a mode not supported by the scan tool. |
RR Tire Pressure | -- | Varies | The scan tool displays kPa or PSI. The scan tool displays 0-344 kPa (0-51 psi). The actual pressure of the indicated tire. |
RR Turn/Hazard Lamp Command | -- | Off | The scan tool displays On or Off. The scan tool displays ON when the BCM activates the right rear turn/hazard supply voltage circuit. |
Security Indicator Command | -- | Off | The scan tool displays On or Off. This is the state of the security indicator as commanded by the BCM. |
Seed and Key Timer | -- | Varies | The scan tool displays seconds. |
Sensor Learn Mode | -- | Inactive | The scan tool displays Active or Inactive. Active indicates the Tire Pressure Monitor (TPM) systems tire pressure sensor learn mode is active and able to learn all 4 sensor Id codes. Inactive indicates the TPM system is not able to learn the sensor Id codes. |
Selected Front Tire Pressure | -- | Varies | The scan tool displays the front tire pressure that was last selected for the vehicle. |
Selected Rear Tire Pressure | -- | Varies | The scan tool displays the rear tire pressure that was last selected for the vehicle. |
Selected Tire Type | -- | Varies | The scan tool displays [N/A], P-Metric (S), P-Metric (X), Load Range C, Load Range D, or Load Range E. The tire type that was last selected for the vehicle. |
Talk Switch | -- | Inactive | The scan tool displays Active or Inactive. |
Tamper Timer | -- | Varies | The scan tool displays seconds. |
TCS Switch State | -- | Released | The scan tool displays Pressed or Released. The state of the TCS switch as monitored by the BCM. |
TPM System Enabled | -- | Yes | The scan tool displays Yes or No. Yes indicates the TPM option has been enabled. No indicates the TPM option has not been enabled. |
Traction Switch LED | -- | Off | The scan tool displays On or Off. |
Vehicle Speed | -- | Varies | The scan tool displays 0-255 km/h (0-155 mph). This is the current vehicle speed signal being sent to the BCM. |
VTD Fuel Disable | -- | Inactive | The scan tool displays Active or Inactive. The scan tool displays Active when the TDM is requesting that the fuel system be disabled. |
Washer Switch | -- | Off | The scan tool displays On or Off. The body control module (BCM) uses this input to determine if the wash switch is pressed. If it is pressed, the BCM commands the wiper micro relay ON and keeps it ON until 2 wipe cycles have completed after the switch has been released. |
Wiper Delay Input | -- | Varies | The scan n tool displays volts. The BCM uses this input to determine if it should command the wiper micro relay ON, and the length of the delay between wipes. The scan tool displays 0 volts when the windshield wiper switch is OFF. |
Wiper Relay Cmd. | -- | Off | The scan tool displays On or Off. This output displays whether or not the BCM, or any other voltage source, is providing voltage for the wiper micro relay. ON is displayed when the BCM detects voltage on the windshield wiper switch signal 2 circuit. |
Scan Tool Output Control | Description |
|---|---|
Blower Motor Relay | Turns ON and OFF the blower motor relay. |
Brake to Shift Relay | Commands the brake to shift relay ON for 5 seconds and OFF. |
Courtesy Lamps | The BCM activates the interior courtesy lamps when you select ON. The interior courtesy lamps remain illuminated for 5 seconds. |
Driver Door Unlock | The BCM momentarily pulses only the driver door lock motor. The driver door should unlock when ON is selected. |
Front Fog Lamps | The BCM activates the front fog lamp relay illuminating the front fog lamps when you select ON. The front fog lamps remain illuminated for 5 seconds |
Gauge LED | The BCM activates the gauge LED lamps when you select ON. |
Headlamps | The BCM activates the headlamp relay illuminating the low beam headlamps when you select ON. The low beam headlamps remain illuminated for 5 seconds. |
High Beams | The BCM activates the beam select relay illuminating the high beam headlamps and high beam indicator when you select ON while the low beam headlamps are on. The high beam headlamps and indicator remain illuminated for 5 seconds. |
Horn | This output control is used to command the horn On and Off. |
Inadv. Power 1 | The BCM disables the inadvertent power supply circuit when you select OFF. The inadvertent power supply circuit remains disabled for 5 seconds. |
Inadv. Power 2 | The BCM disables the inadvertent power supply circuit when you select OFF. The inadvertent power supply circuit remains disabled for 5 seconds. |
LF Turn Lamp/DRL | The BCM activates the left front turn/DRL lamp when you select ON. The left front turn/DRL lamp remains activated until commanded OFF. |
Lock All Doors | This output control is used to command the doors to lock. |
LR Stop/Turn Signal Lamp | The BCM activates the left rear stop/turn signal lamp and left turn indicator when you select ON. The left rear stop/turn signal lamp and indicator remain activated until commanded OFF. |
Parking Lamps | The BCM activates the park lamp relay illuminating the parking lamps when you select ON. The parking lamps remain illuminated for 5 seconds. |
Program Key Fobs | The BCM programs all of the keyless entry transmitters for the keyless entry system. |
Retained Accessory Power | The BCM activates the RAP relay control circuit. |
Rear Defog Relay | The body control module (BCM) actuates the Rear Defogger relay when ON is selected. The rear window defogger grid should become warm. |
RF Turn Lamp/DRL | The BCM activates the right front turn/DRL lamp when you select ON. The right front turn/DRL lamp remains activated until commanded OFF. |
RR Stop/Turn Signal Lamp | The BCM activates the right rear stop/turn signal lamp and right turn indicator when you select ON. The right rear stop/turn signal lamp and indicator remain activated until commanded OFF. |
Security Lamp | The BCM activates the security lamp when you select ON. |
Setup SDM Serial Number in BCM | The replacement of the inflatable restraint sensing and diagnostic module (SDM) will require that the SDM part number be relearned by other modules. |
Tire Type/Pressure Selection | The scan tool must be used to select the correct tire type and the front and rear tire pressures for the vehicle. |
Wiper Relay | This output control is used to command the wiper relay On and Off. |
