Scan Tool Data Definitions
- 4WD
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The scan tool displays On or Off. This is the state of the 4WD indicator as commanded by the instrument panel cluster (IPC).
- ABS Lamp
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The scan tool displays On or Off. The state of the ABS indicator as commanded by the IPC.
- Battery
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The scan tool displays On or Off. The state of the battery indicator as commanded by the IPC.
- Battery Voltage
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The scan tool displays 0-19 volts. The voltage measured at the battery positive voltage circuit of the BCM.
- Battery Voltage
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The scan tool displays 0-19 volts. The voltage measured at the battery positive voltage circuit of the IPC.
- Brake Lamp
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The scan tool displays On or Off. The state of the BRAKE indicator as commanded by the IPC.
- Cargo Lamp On
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The scan tool displays On or Off. This is the state of the cargo lamp as commanded by the IPC.
- Change Engine Oil
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The scan tool displays On or Off. This is the state of the change engine oil indicator as commanded by the IPC.
- Check Coolant Temp
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The scan tool displays On or Off. This is the state of the check coolant temperature indicator as commanded by the IPC.
- Check Engine Oil Level
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The scan tool displays On or Off. This is the state of the check engine oil level indicator as commanded by the IPC.
- Check Engine Temp
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The scan tool displays On or Off. This is the state of the check engine temperature indicator as commanded by the IPC.
- Cruise Control
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The scan tool displays On or Off. The state of the cruise control indicator as commanded by the IPC.
- Cruise Control Active
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The scan tool displays Yes or No. This is the state of the cruise control as commanded by the PCM.
- Dimming
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The scan tool displays Active or Inactive. Active is displayed when the park lamps are ON. Inactive is displayed when the park lamps are OFF.
- Displayed Coolant Temp
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The scan tool displays the coolant temperature displayed by the IPC in °C (°F). This value may slightly differ from the monitored coolant temperature.
- Displayed Fuel Level
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The scan tool displays the fuel level percentage displayed by the IPC. This value may slightly differ from the monitored fuel level.
- Displayed Odometer
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The scan tool displays the odometer data displayed by the IPC in kilometers (miles).
- Displayed Trip Odometer
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The scan tool displays the trip odometer data displayed by the IPC in kilometers (miles).
- Driver Door Jamb Sw
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The scan tool displays Active or Inactive. The output of the driver door jamb switch. An open switch with the door open is displayed as Active.
- ECT Sensor
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The scan tool displays -40 to +151°C (-40 to +304°F). The PCM monitors the voltage at the signal circuit of the engine coolant temperature sensor. The voltage is inversely proportional to the engine coolant temperature.
- Engine Oil Life Remaining
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The scan tool displays 0-100 percent. The PCM calculates the remaining engine oil life.
- Engine Oil Pressure Sensor
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The scan tool displays 0 to 5 volts. The PCM monitors the engine oil pressure sensor signal circuit where a low voltage indicates low pressure.
- Engine Speed
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The scan tool displays 0-9999 RPM. The IPC monitors the engine speed signal circuit from the PCM.
- Engine Speed
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The scan tool displays 0-9999 RPM. Engine speed is computed by the PCM from the 3X reference input. It should remain close to desired idle under various engine loads with the engine idling.
- Fasten Seat Belts
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The scan tool displays On or Off. The state of the fasten safety belt indicator as commanded by the IPC.
- Fuel Level Sensor
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The scan tool displays 0-5 volts. The PCM monitors the fuel level sensor signal circuit where 0 V is an empty tank.
- Fuel Tank Level Remaining
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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.
- Fuel Tank Level Remaining
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The scan tool displays liters. The PCM calculates the amount of fuel remaining in the tank based on the input from the fuel level sensor.
- High Beam Lamp
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The scan tool displays On or Off. The state of the high beam indicator as commanded by the IPC.
- Ignition 1
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The scan tool displays Active or Inactive. The BCM displays Active if it senses voltage at the ignition 1 input.
- Ignition 1 Signal
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The scan tool displays 0-16 volts. The ignition 1 signal represents the system voltage detected by the PCM at the ignition voltage circuit.
- Ignition 3
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The scan tool displays Active or Inactive. The BCM displays Active if it senses voltage at the ignition 3 input.
- Key in Ignition
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The scan tool displays Yes or No. The BCM monitors the key in ignition signal circuit. A closed switch with the key in the ignition is displayed as Yes.
- Left Turn Signal
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The scan tool displays On or Off. The BCM monitors the signal circuit of the left turn signal switch. A closed switch is displayed as On.
- Low Coolant
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The scan tool displays On or Off. This is the state of the low coolant indicator as commanded by the IPC.
- Low Fuel Lamp
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The scan tool displays On or Off. The state of the low fuel indicator as commanded by the IPC.
- Low Washer Fluid
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The scan tool displays On or Off. The IPC monitors the windshield washer solvent level switch, where a closed switch with low washer fluid is displayed as On.
- MIL (Malfunction Indicator Lamp) Command
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The scan tool displays On or Off. This is the commanded state of the MIL (Malfunction Indicator Lamp) by the PCM.
- Module Part Number
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The scan tool displays the GM part number of the IPC.
- Monitored Coolant Temp
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The scan tool displays the coolant temperature data in °C (°F) as provided to the IPC from the PCM via the class 2 serial data link.
- Monitored Fuel Level
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The scan tool displays the fuel level percentage as provided to the IPC from the PCM via the class 2 serial data link.
- Oil Pressure Lamp
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The scan tool displays On or Off. The state of the oil pressure indicator as commanded by the IPC. The IPC monitors the engine oil pressure sensor signal where a low sensor resistance is proportional to low oil pressure.
- Overspeed Lamp
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The scan tool displays On or Off. The state of the overspeed indicator as commanded by the IPC.
- Park Brake Switch
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The scan tool displays Set or Released. The BCM monitors the park brake switch signal circuit.
- Park Lamps
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The scan tool displays On or Off. The BCM monitors the signal circuit of the park lamp switch. A closed switch is displayed as On.
- Park Switch
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The scan tool displays Open or Closed. The state of the park position switch. A closed switch with the shifter in Park is displayed as Closed.
- PRNDL State
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The scan tool displays the PRNDL range of the vehicle as communicated to the IPC by the PCM via the class 2 serial data link.
- Reduced Engine Power
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The scan tool displays Inactive or Active. This is the state of the Reduced Engine Power indicator as commanded by the IPC.
- Right Turn Signal
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The scan tool displays On or Off. The BCM monitors the signal circuit of the right turn signal switch. A closed switch is displayed as On.
- Security Lamp
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The scan tool displays On or Off. The state of the security indicator as commanded by the IPC.
- Security Lamp State
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The scan tool displays On, Off or Flashing. The state of the security indicator as commanded by the BCM.
- Service 4WD
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The scan tool displays On or Off. The state of the Service 4WD indicator as commanded by the IPC.
- Tow/Haul
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The scan tool displays On or Off. The IPC monitors the signal circuit of the tow/haul switch. A closed switch is displayed as On.
- Trans. Fluid Hot
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The scan tool displays On or Off. This is the state of trans fluid hot indicator as commanded by the IPC.
- Trans. Hot...Idle Engine
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The scan tool displays On or Off. This is the state of trans hot indicator as commanded by the IPC.
- Trip Reset Switch
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The scan tool displays Active or Inactive. The IPC monitors the trip reset switch. A closed switch is displayed as Active.
- Upshift Lamp
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The scan tool displays On or Off. The state of the Upshift indicator as commanded by the IPC.
- Vehicle Speed
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The scan tool displays 0-255 km/h (0-155 mph). The BCM monitors the vehicle speed signal circuit from the PCM.
- Vehicle Speed
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The scan tool displays 0-255 km/h (0-155 mph). The IPC monitors the vehicle speed signal circuit from the PCM.
- Vehicle Speed Sensor
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The scan tool displays 0-255 km/h (0-155 mph). The PCM monitors the voltage at the signal circuit of the vehicle speed sensor. The voltage is proportional to the vehicle speed.