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Scan Tool Data Definitions

The Data Display function contains lists of ABS and ETS data parameters. A brief description of all ABS and ETS data parameters available on the scan tool are listed below. The list is arranged in alphabetical order.

ABS Active:  The scan tool displays Yes or No - The scan tool displays Yes when the ABS is active. This scan tool displays No during normal vehicle operation.

ABS Lamp:  The scan tool displays Off or On. Indicates if the EBCM is commanding the ABS indicator ON.

ABS Relay Command:  The scan tool displays On or Off - The scan tool displays On during vehicle operation. The EBCM commands the ABS relay On when Ignition positive voltage is present.

ABS Relay Feedback:  The scan tool displays On or Off - The scan tool displays On during vehicle operation.

ABS Warning Lamp:  The scan tool displays Off or On. Indicates if the EBCM is commanding the ABS indicator ON.

Battery Voltage:  The scan tool displays 0 to 30 Volts. The voltage measured between the module's battery positive voltage circuit and ground circuit.

Brake Fluid Level:  The scan tool displays Low or Normal - The scan tool displays if the brake fluid level is below the standard operating level.

Brake Switch Status:  The scan tool displays Applied or Released - The scan tool displays the state of the brake switch.

Configuration ID:  The scan tool displays 6 characters - The scan tool displays the configuration ID number of the EBCM.

DE Base Part Number:  The scan tool displays 4 characters - The scan tool displays the base part number of the EBCM.

DE Build Sequence Number:  The scan tool displays 8 characters - The scan tool displays the build sequence number of the EBCM.

DE Calibration Part Number:  The scan tool displays 4 characters - The scan tool displays the calibration number of the EBCM.

DE End Model Part Number:  The scan tool displays 4 characters - The scan tool displays the end model part number of the EBCM.

DE ROM Part Number:  The scan tool displays 4 characters - The scan tool displays the ROM part number of the EBCM.

EBCM to PCM Requested:  The scan tool displays 0-100 percent - The scan tool displays the torque signal. The signal is used to transmit how much torque the EBCM is requesting the PCM to deliver. Normal values are between 10 and 100 percent. The signal should be at 100 percent when ETS is not active and at lower values when ETS is active.

ETS Active:  The scan tool displays Yes or No - The scan tool displays whether or not the vehicle is currently in an ETS event.

ETS Active Lamp:  The scan tool displays Off or On. Indicates if the EBCM is commanding the LOW TRAC indicator ON.

ETS Disable Lamp:  The scan tool displays Off or On. Indicates if the EBCM is commanding the TRAC OFF indicator ON.

ETS Equipped:  The scan tool displays Yes or No - The scan tool displays if vehicle is equipped with ETS.

ETS Status:  The scan tool displays Off or On - The scan tool displays the state of the ETS based on if the driver has disabled ETS by pressing the ETS switch, or if the ETS has been disabled due to a malfunction.

ETS Warning Lamp:  The scan tool displays Off or On. Indicates if the EBCM is commanding the TRAC OFF indicator ON.

Ignition Voltage:  The scan tool displays 0-17 volts - The scan tool displays the level of ignition positive voltage at the EBCM.

Julian Date Code:  The scan tool displays year/day - The scan tool displays the last digit of the year and the day of the year that the EBCM was built.

Left Front Wheel Speed:  The scan tool displays 0-255 km/h (0-158 mph) - The scan tool displays the actual speed of the left front wheel.

Left Rear Wheel Speed:  The scan tool displays 0-255 km/h (0-158 mph) - The scan tool displays the actual speed of the left rear wheel.

LF Inlet Valve Solenoid:  The scan tool displays Active or Inactive - The scan tool displays the commanded state of the LF inlet solenoid valve.

LF Outlet Valve Solenoid:  The scan tool displays Active or Inactive - The scan tool displays the commanded state of the LF outlet solenoid valve.

Low Traction Lamp:  The scan tool displays Off or On. Indicates if the EBCM is commanding the LOW TRAC Indicator ON.

LR Inlet Valve Solenoid:  The scan tool displays Active or Inactive - The scan tool displays the commanded state of the LR inlet solenoid valve.

LR Outlet Valve Solenoid:  The scan tool displays Active or Inactive - The scan tool displays the commanded state of the LR outlet solenoid valve.

PCM to EBCM Delivered:  The scan tool displays 0-100 percent - The scan tool displays the Requested Torque signal. The signal is used to transmit how much engine torque the PCM is delivering. Normal values are between 10 and 100 percent. The signal is at low values at idle and at higher values under driving conditions.

Pump Motor Commanded State:  The scan tool displays On or Off - The scan tool displays the commanded state of the pump motor.

Pump Motor Feedback State:  The scan tool displays On or Off - The scan tool displays the actual state of the pump motor.

Right Front Wheel Speed:  The scan tool displays 0-255 km/h (0-158 mph) - The scan tool displays the actual speed of the right front wheel.

Right Rear Wheel Speed:  The scan tool displays 0-255 km/h (0-158 mph) - The scan tool displays the actual speed of the right rear wheel.

RF Inlet Valve Solenoid:  The scan tool displays Active or Inactive - The scan tool displays the commanded state of the RF inlet solenoid valve.

RF Outlet Valve Solenoid:  The scan tool displays Active or Inactive - The scan tool displays the commanded state of the RF outlet solenoid valve.

Rough Road Parameter:  The scan tool displays 0-1 g - The scan tool displays the EBCM calculation of the road surface roughness. This information is sent to the PCM over the class 2 serial data line. The PCM uses this information for misfire detection.

RR Inlet Valve Solenoid:  The scan tool displays Active or Inactive - The scan tool displays the commanded state of the RR inlet solenoid valve.

RR Outlet Valve Solenoid:  The scan tool displays Active or Inactive - The scan tool displays the commanded state of the RR outlet solenoid valve.

Switched Battery Voltage:  The scan tool displays 0-17 Volts - The scan tool displays the level of the internal EBCM switched battery voltage available to the solenoid valves and pump motor.

System ID:  The scan tool displays the configuration ID of the EBCM.

Traction Off Lamp:  The scan tool displays Off or On. Indicates if the EBCM is commanding the TRAC OFF indicator ON.

Traction Switch:  Display Off or On. Indicates the status of the traction control switch.

Vehicle Speed:  The scan tool displays 0-255 km/h or 0-158 mph - This parameter displays the vehicle speed. The Powertrain Control Module (PCM) receives reference pulses from the Vehicle Speed Sensor (VSS) and converts them into km/h or MPH for display.

Fig 1: Diagnostic Trouble Code (DTC) List
G01583432Courtesy of GENERAL MOTORS CORP.
DIAGNOSTIC TROUBLE CODE (DTC) DEFINITION

DTC Description
C1214  System Relay Contact Or Coil Circuit Open
C1217  Pump Motor Shorted To Ground
C1218  Pump Motor Circuit Shorted To Voltage Or Motor Ground Open
C1221  LF Wheel Speed Sensor Input Signal is 0
C1222  RF Wheel Speed Sensor Input Signal is 0
C1223  LR Wheel Speed Sensor Input Signal is 0
C1224  RR Wheel Speed Sensor Input Signal is 0
C1225  LF Excessive Wheel Speed Variation
C1226  RF Excessive Wheel Speed Variation
C1227  LR Excessive Wheel Speed Variation
C1228  RR Excessive Wheel Speed Variation
C1232  LF Wheel Speed Circuit Open or Shorted
C1233  RF Wheel Speed Circuit Open or Shorted
C1234  LR Wheel Speed Circuit Open or Shorted
C1235  RR Wheel Speed Circuit Open or Shorted
C1236  Low System Supply Voltage
C1237  High System Supply Voltage
C1242  Pump Motor Circuit Open
C1243  BPMV Pump Motor Stalled
C1254  Abnormal Shutdown Detected
C1255  EBCM Internal Malfunction
C1256  EBCM Internal Malfunction
C1261  LF Inlet Valve Solenoid Malfunction
C1262  LF Outlet Valve Solenoid Malfunction
C1263  RF Inlet Valve Solenoid Malfunction
C1264  RF Outlet Valve Solenoid Malfunction
C1265  LR Inlet Valve Solenoid Malfunction
C1266  LR Outlet Valve Solenoid Malfunction
C1267  RR Inlet Valve Solenoid Malfunction
C1268  RR Outlet Valve Solenoid Malfunction
C1275  PCM Serial Data Malfunction
C1278  TCS Temporarily Inhibited By PCM
C1295  Brake Lamp Switch Circuit Open