Scan Tool Data Definitions

8-Digit GM Part Number: The scan tool displays the GM eight digit part number of the Instrument Panel Cluster (IPC).

ABS Inop Lamp: The scan tool displays On/Off. The state of the ABS lamp detected by the IPC. The IPC receives a class 2 message from the EBCM or there is a loss of class 2 communication.

Air Bag Lamp: The scan tool displays On/Off. The state of the air bag lamp detected by the IPC. The IPC receives a class 2 message from the SDM or there is a loss of class 2 communication.

Brake: Class 2: The scan tool displays On/Off. If the scan tool displays On, this input is the reason why this indicator is coming on.

Brake: Hardwire Input: The scan tool displays On/Off. If the scan tool displays On, this input is the reason why this indicator is coming on.

Change Oil Lamp: The scan tool displays On/Off. The state of the change oil lamp as commanded by the IPC. The IPC receives a class 2 message from the PCM.

Check Gages Lamp: The scan tool displays On/Off. The state of the check gages lamp detected by the IPC. The IPC receives a class 2 message from the PCM, the engine coolant temperature exceeds 107°C (225°F), engine oil pressure is low, generator malfunction, or the fuel level falls below 1/16 of a tank.

Chk Gage: Low Fuel: The scan tool displays On/Off. If the scan tool displays On, this input is the reason why this indicator is coming on.

Chk Gage: Low Oil PSI: The scan tool displays On/Off. If the scan tool displays On, this input is the reason why this indicator is coming on.

Chk Gage: Temp Gage: The scan tool displays On/Off. If the scan tool displays On, this input is the reason why this indicator is coming on.

Chk Gage: Volt Gage: The scan tool displays On/Off. If the scan tool displays On, this input is the reason why this indicator is coming on.

Dimming Input: The scan tool displays 0-25.5 Volts. The state of the dimming input detected by the IPC from the headlamp dimmer switch.

Engine Oil Level: The scan tool displays OK/Low. The PCM monitors the signal circuit of the engine oil level switch, where an open switch is displayed as Low (low engine oil level).

Fuel Level: The scan tool displays 0-100%. The PCM calculates the amount of fuel remaining in the tank based on the input from the fuel level sensor. The IPC receives a class 2 message from the PCM indicating the fuel level percent.

Hatch Ajar Switch: The scan tool displays Open/Closed. The state of the hatch ajar lamp detected by the IPC from the rear compartment lid ajar indicator switch (low input).

Headlamps: The scan tool displays On/Off. The state of the high beam lamp detected by the IPC from the headlamp dimmer switch (low input) when the headlamps are on.

Ignition 1: The scan tool displays 0-25.5 volts. The voltage measured from the IPC ignition 1 positive voltage circuit to the PC's ground circuit.

Low Coolant Level: The scan tool displays On/Off. There is no indicator on the IPC for low coolant level. This parameter is not useful.

Low Oil Level: The scan tool displays On/Off. The state of the low oil level lamp detected by the IPC. The IPC receives a class 2 message from the PCM.

Low Trac: ABS Active: The scan tool displays On/Off. If the scan tool displays On, this input is the reason why this indicator is coming on.

Low Trac: TCS Off: The scan tool displays On/Off. If the scan tool displays On, this input is the reason why this indicator is coming on.

Low Traction Lamp: The scan tool displays On/Off. The state of the low traction lamp detected by the IPC. The IPC receives a class 2 message from the EBCM.

Odometer: The scan tool displays 0-999999.9 miles. The state of the vehicle speed detected by the IPC from the PCM (variable voltage). The IPC calculates the mileage to determine the odometer value.

Red Brake Lamp: The scan tool displays On/Off. The state of the brake lamp detected by the IPC. The IPC receives a class 2 message from the EBCM, the park brake is set, a low brake fluid condition, the EBCM senses base brake failure, or there is a loss of class 2 communication.

Reduced Performance Lamp: The scan tool displays On/Off. The state of the reduced engine power lamp detected by the IPC. The IPC receives a class 2 message from the PCM or a loss of class 2 communication.

Restraints ID: This scan tool displays the four digit number of the SDM incorporated into the IPC.

RPM: The scan tool displays 0-8160 PPM. The state of the engine speed detected by the IPC. The IPC receives a class 2 message from the PCM.

Service Veh. Soon Lamp: The scan tool displays On/Off. The state of the service veh. soon lamp detected by the IPC. The IPC receives a class 2 message from the PCM, or there is an internal fault in the IPC caused by the air bag indicator, or there is a loss of class 2 communications.

Skip Shift Lamp: The scan tool displays On/Off. The state of the skip shift lamp detected by the IPC. The IPC receives a class 2 message from the PCM.

Software Release, Day: This scan tool displays the day of the original version of the software in the IPC.

Software Release, Month: This scan tool displays the month of the original version of the software in the IPC.

Software Release, Year: This scan tool displays the year of the original version of the software in the IPC.

Software Version: This scan tool displays the original version of the software in the IPC.

SVS: Air Bag Fault: The scan tool displays On/Off. If the scan tool displays On, this input is the reason why this indicator is coming on.

SVS: Class 2: The scan tool displays On/Off. If the scan tool displays On, this input is the reason why this indicator is coming on.

SVS: Lost 50H: The scan tool displays On/Off. If the scan tool displays On, this input is the reason why this indicator is coming on.

TCS Off Lamp: The scan tool displays On/Off. The state of the TCS off lamp detected by the IPC. The IPC receives a class 2 message from the EBCM, TCS is off, TCS has failed, or there is a loss of class 2 communication.

TCS Off: TCS Fail Msg: The scan tool displays On/Off. If the scan tool displays On, this input is the reason why this indicator is coming on.

TCS Off: TCS Off Msg: The scan tool displays On/Off. If the scan tool displays On, this input is the reason why this indicator is coming on.

Trip Reset Switch: The scan tool displays Active/Inactive. The state of trip reset switch detected by the IPC from the trip reset switch internally.

Vehicle Speed: The scan tool displays 0-255 km/h. The PCM monitors the voltage at the signal circuit of the vehicle speed sensor. The voltage is proportional to the vehicle speed.