GM Service Manual Online
For 1990-2009 cars only
Table 1: Instrument Panel Cluster (IPC) Scan Tool Data Parameters
Table 2: Instrument Panel Cluster (IPC) Scan Tool Output Controls

Instrument Panel Cluster (IPC) Scan Tool Data Parameters

Parameter

System State

Expected Value

Description

Operating Conditions: Engine ON

A/C Switch (Air Conditioning)

--

Off

The scan tool displays On or Off. This is the current state of the air condition switch.

ABS Telltale

--

Off

The scan tool displays On or Off. This is the current state of the anti-lock brake system (ABS) telltale.

AFL Telltale (Adaptive Forward Lighting)

--

Off

The scan tool displays On or Off. This is the current state of the AFL telltale.

AHL Telltale (Headlamp Levelling Device)

--

Off

The scan tool displays On or Off. This is the current state of the automatic headlamp level (AHL) telltale.

Airbag Telltale

--

Off

The scan tool displays On or Off. This is the current state of the airbag telltale.

AT Gear Indicator (Automatic Transmission)

--

Varies

The scan tool displays 1 (First Gear), 2 (Second Gear), 3 (Third Gear), 4 (Fourth Gear), 5 (Fifth Gear), 6 (Sixth Gear), 7 (Seventh Gear), R (Reverse Gear), N (Neutral Gear), P (Parking), O (Overdriving), I (Intermdiate), L (Low), D (Driving), D1 - D7, M (Manual), M1 - M7, A (Automatic), A1 - A7, Invalid or No AT Vehicle.

Brake Pad Sensor Left Front

--

Varies

The scan tool displays Active or Inactive. This is the current state of the driver front brake pad sensor.

Brake Telltale

--

Off

The scan tool displays On or Off. This is the current state of the brake telltale.

BUS Power Mode

--

Run

The scan tool displays Off, Accessory, Run, Crank Request or Invalid. This is the current state of the ignition switch.

CDC Tellale (Continuous Damping Control)

--

Off

The scan tool displays On or Off. This is the current state of the CDC telltale.

CDLS Switch Status (Central Door Locking System)

--

Off

The scan tool displays On or Off. This is the current state of the central door locking system.

Charging Control Telltale

--

Off

The scan tool displays On or Off. This is the current state of the battery telltale.

Child Seat Symbol

--

Off

The scan tool displays On or Off. This is the current state of the child seat symbol.

Coolant Level Switch

--

Normal

The scan tool displays Normal, Low or Not Programmed. This is the state of the coolant level switch.

Crank Request

--

Inactive

The scan tool displays Active or Inactive. Active is displayed if the ignition is in crank.

Cruise Control Switch

--

Off

The scan tool displays O (off), I (set), R (Resume) or Inactive. This is the current state of the cruise control switch.

Cruise Control Telltale

--

Off

The scan tool displays On or Off. This is the current state of the cruise control telltale.

DDS Switch Status (Deflation Detection System)

--

Off

The scan tool displays On or Off. This is the state of the DDS switch.

DDS Telltale (Deflation Detection System)

--

Off

The scan tool displays Invalid, Off, Red or Yellow. This is the current state of the DDS telltale.

Defrost Switch

--

Inactive

The scan tool displays Active or Inactive. This is the current state of the defrost switch.

Dimmer Level Bulbs

--

Varies

This displays %. This is the dimmer level percentage of the bulbs.

Dimmer Level LED

--

Varies

This displays %. This is the dimmer level percentage of the light emitting diodes (LED).

Dimming Instrument Illumination

--

Varies

This displays %.

Dimming LCD Illumination

--

Varies

This displays %.

Displayed Fuel Level

--

Varies

This displays %. This is the current estimated fuel level remaining measured in percentage.

Door Open Telltale

--

Off

The scan tool displays On or Off. This is the current state of the door open telltale.

Easytronic Shift Mode

--

Varies

The scan tool displays Up Switch, Down Switch, Invalid or Disabled.

Engine Cold Telltale

--

Off

The scan tool displays On or Off. This is the current state of the engine cold telltale.

Engine Coolant Temperature Telltale

--

Off

The scan tool displays On or Off. This is the current state of the engine coolant temperature telltale.

Engine Running Signal

--

No

The scan tool displays Yes or No. Yes is displayed if the engine is running.

Engine Speed

--

0 RPM

This displays RPM. This is the current engine speed.

Flexible Service Interval

--

Varies

This displays On or Off. This is the current state of the flexible service interval.

Front Fog Lights Switch Status

--

Off

The scan tool displays On or Off. This is the current state of the front fog lamp switch.

Fr. Fog Light Telltale (Front)

--

Off

The scan tool displays On or Off. This is the current state of the front fog lamp telltale.

Fuel Level Sensor

--

Varies

This displays Steps. This is the current fuel level measured in steps.

Fuel Level Telltale

--

Varies

The scan tool displays Off, On, Blinking, Flashing or Invalid. This is the current state of the low fuel level telltale.

Fuel Level Telltale FLASHING Level

--

Varies

This displays %. This is the percentage of the fuel level to flash the telltale.

Fuel Level Telltale Off Level

--

Varies

This displays %. This is the percentage of the fuel level to turn off the low fuel level telltale.

Fuel Level Telltale On Level

--

Varies

This displays %. This is the percentage of the fuel level to illuminate the low fuel level telltale.

Glow Time Telltale

--

Off

The scan tool displays On or Off. This is the current state of the glow time telltale.

Hazard Switch Illumination

--

Day

The scan tool displays Disabled, Day, Night or Invalid. This is the current illumination state of the hazard switch.

Hazard Warning Switch

--

Off

The scan tool displays On or Off. This is the current state of the hazard switch.

High Beam Telltale

--

Off

The scan tool displays On or Off. This is the current state of the high beam telltale.

Interior Mirror Dim Function

--

Off

The scan tool displays On or Off. This is the current state of the interior mirror dim function.

IPC Automatic Light Sensor (Instrument Panel Cluster)

--

Off

The scan tool displays On or Off. This is the state of the IPC light sensor.

IPC Immobilizer Environment Identifier (Instrument)

--

Programmed

The scan tool displays Programmed, Not Programmed or Incorrect.

IPC Immobilizer Identifier (Instrument)

--

Programmed

The scan tool displays Programmed or Not Programmed.

IPC Switch System Voltage (Instrument)

--

Varies

This displays V. This is the current switch system voltage of the instrument panel cluster (IPC).

IPC System Voltage (Instrument)

--

Varies

This displays V. This is the current system voltage of the instrument panel cluster (IPC).

Left Steering Wheel Remote Control Status

--

No Key Pressed

The scan tool displays No Key Pressed, Up-Key, Down-Key, Menu Up, Menu Down or Pressed.

Limp Home Mode

--

Varies

The scan tool displays Active or Inactive.

Low Beam Switch Status

--

Off

The scan tool displays On or Off. This is the current state of the low beam switch.

Low Beam Telltale

--

Off

The scan tool displays On or Off. This is the current state of the low beam telltale.

Malfunction Indicator (MI)

--

Off

The scan tool displays Flashing, On or Off. This is the current state of the malfunction indicator.

Next Service

--

Varies

This displays day(s).

Next Service

--

Varies

This displays km (mi).

Odometer Value

--

Varies

This displays km (mi). This is the current value of the odometer.

Oil Level Symbol

--

Off

The scan tool displays On or Off. This is the current state of the oil level symbol.

Oil Pressure Telltale

--

Off

The scan tool displays On or Off. This is the current state of the oil pressure telltale.

Outside Temperature

--

Varies

This displays °C (°F). This is the current outside temperature.

Overspeed Buzzer

--

Disabled

The scan tool displays Disabled or Enabled. This is the current state of the audible overspeed warning.

Overspeed Function

--

Inactive

The scan tool displays Active or Inactive. This is the current state of the overspeed function.

Overspeed Warning

--

Off

The scan tool displays On or Off. This is the current state of the overspeed warning.

Park Pilot Symbol

--

Off

The scan tool displays On or Off. This is the current state of the park pilot symbol.

Parking Light Status

--

Off

The scan tool displays On or Off. This is the current state of the parking lights.

PAS Telltale (Park Pilot)

--

Off

The scan tool displays On or Off. This is the current state of the park assist system (PAS) telltale.

PBSL Relay (Park Brake Shift Lock)

--

Varies

The scan tool displays On or Off. This is the current state of the park brake shift lock (PBSL) relay.

Rear Fog Light Switch Status

--

Off

The scan tool displays On or Off. This is the current state of the rear fog lamp switch.

Rear Fog Light Telltale

--

Off

The scan tool displays On or Off. This is the current state of the rear fog lamp telltale.

Rear Window Heating Status

--

Off

The scan tool displays On or Off. This is the current state of the rear window heating.

Rear Window Heating Telltale

--

Off

The scan tool displays On or Off. This is the current state of the rear window heating telltale.

REC Ignition Status (Rear Electrical Center)

--

Active

The scan tool displays Active or Inactive. This is the current state of the rear electrical center (REC) ignition.

REC System Voltage (Rear Electrical Center)

--

Varies

This displays V. This is the current system voltage of the rear electrical center (REC).

Right Steering Wheel Remote Control Status

--

No Key Pressed

The scan tool displays No Key Pressed, Up-Key, Down-Key, Volume Up or Volume Down.

Seat Belt Telltale

--

Off

The scan tool displays On or Off. This is the current state of the seat belt telltale.

Security Code Reset Counter

--

Varies

The scan tool displays a numeric value.

Security Code Status

--

Varies

The scan tool displays Correct Entered, Not Entered, Wrong Entered or Not Programmed.

Security Wait Time

--

Varies

The scan tool displays Active, Inactive, Invalid, 21:20:00, 10:40:00, 5:20:00, 2:40:00, 1:20:00, 0:40:00, 0:20:00, 0:10:00 or 0:00:10.

Service Interval Function

--

Varies

The scan tool displays Enabled or Disabled. This is the state of the service interval function.

Service Interval Reset

--

Inactive

The scan tool displays Invalid, Inactive, by Instrument or by Tech 2.

Sport Mode

--

Varies

The scan tool displays Active or Inactive. This is the current state of the sport mode switch.

Sport Mode Indicator

--

Off

The scan tool displays On or Off. This is the current state of the sport mode telltale.

Sport Mode Switch

--

Varies

The scan tool displays Active or Inactive. This is the current state of the sport mode switch.

SVS Lamp (Service Vehicle Soon)

--

Off

The scan tool displays Not Used, Flashing, On or Off. This is the current state of the service vehicle soon telltale.

Switch Illumination Dimming

--

Varies

The scan tool displays Dark, Bright, Disabled or Invalid. This is the current state of the switch illumination dimming.

Traction Control Telltale

--

Varies

The scan tool displays Not Used, Flashing, On or Off. This is the current state of the traction control telltale.

Trailer Turn Signal

--

Off

The scan tool displays On or Off. This is the current state of the trailer turn signal telltale.

Transport Mode

--

Varies

The scan tool displays Active or Inactive.

Trip Meter Value

--

Varies

This displays km (mi). This is the current value of the trip meter.

Trip Reset Button

--

Inactive

The scan tool displays Active or Inactive. This is the current state of the trip reset button.

Turn Left Signal Telltale

--

Off

The scan tool displays On or Off. This is the current state of the left turn signal telltale.

Turn Right Signal Telltale

--

Off

The scan tool displays On or Off. This is the current state of the right turn signal telltale.

UEC Ignition Status (Underhood Electrical Center)

--

Active

The scan tool displays Active or Inactive. This is the current state of the underhood electrical center (UEC) ignition.

UEC System Voltage (Underhood Electrical Center)

--

Varies

This displays V. This is the current system voltage of the underhood electrical center (UEC).

Vehicle Speed

--

0 km/h (0 mph)

This displays km/h (mph). This is the current vehicle speed.

Vehicle Speed (CAN-Bus)

--

0 km/h (0 mph)

This displays km/h (mph). This is the current vehicle speed.

VIN Program Counter (Vehicle Identification Number)

--

Varies

This displays a numeric value. This is the VIN program counter.

Washer Level Switch

--

Normal

The scan tool displays Low or Normal. This is the current state of the windshield washer level switch.

Winter Mode Indicator

--

Off

The scan tool displays On or Off. This is the current state of the winter mode telltale.

Instrument Panel Cluster (IPC) Scan Tool Output Controls

Output Control

Description

A/C (Air Conditioning) Test

This output control is used to command the air conditioner.

ABS Telltale Test

This output control is used to command the anti-lock brake system (ABS) telltale.

AFL Telltale Test

This output control is used to command the adaptive forward lighting (AFL) telltale.

AHL Telltale Test

This output control is used to command the automatic headlamp level (AHL) telltale.

Airbag Telltale Test

This output control is used to command the airbag telltale.

AT Display Test

This output control is used to command the automatic transmission (AT) displays.

AT Gear Indicator Test

This output control is used to command the automatic transmission (AT) gear indicators.

Automatic Light Test

This output control is used to command the automatic lights.

Battery Charging Telltale Test

This output control is used to command the battery telltale.

Brake Telltale Test

This output control is used to command the brake telltale.

CDC Telltale Test

This output control is used to command the continuous damping control (CDC) telltale.

CDC/Sport Mode LED Test

This output control is used to command the continuous damping control (CDC) / sport mode indicator.

Central Door Lock Test

This output control is used to command the central door lock system (CDLS) indicator.

Child Seat Telltale Test

This output control is used to command the child seat telltale.

Coolant Temperature Telltale Test

This output control is used to command the coolant temperature telltale.

Cruise Control Telltale Test

This output control is used to command the cruise control telltale.

DDS Telltale Test

This output control is used to command the deflation detection system (DDS) telltale.

Dimmed Illumination Control

This output control is used to command the dimmed illumination.

Display Immobilizer Status

This output control is used to display the status of the immobilizer.

Economy/Sport Test

This output control is used to command the economy / sport modes.

Engine Cold Telltale Test

This output control is used to command the engine cold telltale.

Engine Speed Control

This output control is used to command the tachometer.

Front Fog Light Telltale Test

This output control is used to command the front fog light telltale.

Front Fog Light Test

This output control is used to command the front fog lights.

Fuel Level Telltale Test

This output control is used to command the low fuel level telltale.

Glow Time Telltale Test

This output control is used to command the glow time telltale.

Hazard Warning LED Test

This output control is used to command the hazard indicator.

Hazard Warning Test

This output control is used to command the hazards.

High Beam Telltale Test

This output control is used to command the high beam telltale.

Instantaneous Tank Content Control

This output control is used to command the fuel gage.

Instrument Dimming Test

This output control is used to command the instrument panel backlighting.

IPC Heated Rear Window Test

This output control is used to command the rear window defogger.

LCD Display Dimm Illumination Test

This output control is used to command the liquid crystal display (LCD) illumination.

LED Dimmed Illumination Test

This output control is used to command the light emitting diodes (LED) illumination.

Left Turn Signal Test

This output control is used to command the left turn signal.

Low Beam Telltale Test

This output control is used to command the low beam telltale.

Low Beam Test

This output control is used to command the low beams.

Malfunction Indicator (MI) Test

This output control is used to command the service engine soon telltale.

Odometer LCD Test

This output control is used to command the liquid crystal display (LCD) odometer display.

Oil Level Telltale Test

This output control is used to command the oil level telltale.

Oil Pressure Telltale Test

This output control is used to command the oil pressure telltale.

Option Codes

This output control is used to view the option codes.

Park Pilot Switch LED Test

This output control is used to command the park assist switch indicator.

Parking Lights Test

This output control is used to command the parking lights.

PAS (Park Pilot) Test

This output control is used to command the park assist system (PAS), if equipped.

PAS Telltale Test

This output control is used to command the park assist system (PAS) telltale, if equipped.

Program Code Index

This output control is used to program the code index.

Program ECU

This output control is used to program the electronic control unit (ECU) or control module.

Program Low Speed CAN-Bus Config.

This output control is used to program the low speed control area network (CAN) serial data bus configuration.

Program Vehicle Identification No.

This output control is used to program the vehicle identification number (VIN).

Read ECU Identification

This output control is used to read the electronic control unit (ECU) or control module identification data.

Read Variant Configuration

This output control is used to read the variant configuration.

Rear Fog Light Telltale Test

This output control is used to command the rear fog light telltale.

Rear Fog Light Test

This output control is used to command the rear fog lights.

Rear Window Defog LED Test

This output control is used to command the rear window defogger indicator.

REC Terminal 15A Relay Test

This output control is used to command the rear electrical center (REC) terminal 15A relay.

Reset ECU

This output control is used to reset the electronic control unit (ECU) or control module.

Reset Service Interval

This output control is used to reset the service interval.

Right Turn Signal Test

This output control is used to command the right turn signal.

Seat Belt Telltale Test

This output control is used to command seat belt telltale.

Service Vehicle Soon (SVS) Test

This output control is used to command service vehicle soon telltale.

Sport Indicator Test

This output control is used to command sport indicator.

Traction Control Telltale Test

This output control is used to command the traction control telltale.

Trailer Turn Signal Test

This output control is used to command the trailer turn signals.

Vehicle Speed Control

This output control is used to command the speedometer.

Winter Indicator Test

This output control is used to command the winter indicator.