GM Service Manual Online
For 1990-2009 cars only

Circuit Description

The instrument panel cluster (IPC) contains a momentary switch that controls the trip odometer reset and trip season display options. The IPC monitors the circuit voltage levels and detects when the trip odometer reset switch has been depressed.

DTC Descriptor

This diagnostic procedure supports the following DTCs:

    • DTC B2823 Trip Odometer Reset Circuit Low
    • DTC B3574 Trip Odometer A or B (Trip Odometer 1 or 2) Select Switch Circuit Low

Conditions for Running the DTC

The IPC must have normal operating battery voltage.

Conditions for Setting the DTC

The IPC detects that the trip reset switch input is low (grounded) for greater than 60 seconds.

Action Taken When the DTC Sets

The IPC will disable (ignore) the trip reset switch.

Conditions for Clearing the DTC

    • A current DTC B2823 will clear after a complete ignition cycle.
    • A scan tool may be used to clear the DTC.

Diagnostic Aids

    • The IPC will store the code as current only as long as the failure exists. An intermittent failure will be stored as a history DTC B2823.
    • If DTC B2823 is set only in history, press and release the trip reset switch several times in order to verify the customer concern.

Step

Action

Yes

No

Schematic Reference: Instrument Cluster Schematics

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2

  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, observe the Trip Reset Switch parameter in the Instrument Panel Cluster Inputs data list.

Does the scan tool display Inactive?

Go to Step 3

Go to Step 4

3

  1. Press and release the trip reset switch.
  2. With a scan tool, observe the Trip Reset Switch parameter.

Does the Trip Reset Switch parameter change state and the odometer change from season to trip?

Go to Diagnostic Aids

Go to Step 4

4

Replace the instrument panel cluster (IPC). Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 5

--

5

  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.

Does the DTC reset?

Go to Step 2

System OK