GM Service Manual Online
For 1990-2009 cars only

Dash Integration Module (DIM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Battery Voltage

Data

Volts

Varies

Daytime Running Lamp

Outputs

On/Off

On

Control Power

Outputs

On/Off

Off

Flash to Pass Switch

Inputs

On/Off

Off

Front Fog Lamp Relay

Outputs

On/Off

Off

Head Lamp Switch

Inputs

On/Off

Off

High Beam Flash to Pa

Outputs

On/Off

Off

Incandescent Dim 1

Outputs

Percentage

Varies

Lights On with Wipers

Inputs

On/Off

Off

Low Beam Output

Outputs

On/Off

Off

Park Lamp

Inputs

On/Off

Off

Park Lamp Relay Output

Outputs

On/Off

Off

Drivers Door Module (DDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Battery Voltage

Data

Volts

Varies

Driver Door Jamb Sw.

Inputs

On/Off

Off

Left Rear Door Jamb Sw.

Inputs

On/Off

Off

Pass. Door Jamb Sw.

Inputs

On/Off

Off

Rt. Rear Door Jamb Sw.

Inputs

On/Off

Off

Instrument Panel Cluster (IPC)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Battery Voltage

Data

Volts

Varies

Lt. Turning Signal Sw.

Inputs

On/Off

Off

Rt. Turning Signal Sw.

Inputs

On/Off

Off

Instrument Panel Module (IPM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Ambient Light Sensor

Open/Short Data

Volts

Varies

Front Fog Lamp Switch

Non - HVAC Data

On/Off

Off

Interior Dim Pot

Open/Short Data

Volts

Varies

Interior Lamp Switch

Non - HVAC Data

OFF/DOOR/ON

DOOR

Rear Fog Lamp Switch

Non - HVAC Data

On/Off

Off

Twilight Delay Pot

Open/Short Data

Volts

0.12 Volts

Rear Integration Module (RIM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Battery Voltage

Data

Volts

Varies

Inadvertent Power Input

Inputs

On/Off

On

Inadvertent Power Relay

Outputs

On/Off

On

Non-Overhead Lamps Rela

Outputs

On/Off

Off

Overhead Lamps Output

Outputs

On/Off

Off

Rear Fog Lamp Relay

Outputs

On/Off

Off

Reverse Lamp Relay

Outputs

On/Off

Off