GM Service Manual Online
For 1990-2009 cars only

Circuit Description

The instrument panel cluster (IPC) monitors the signal circuit of the internal trip odometer reset switch in order to change odometer displays and to reset the odometer value. The IPC detects a switch activation when the signal circuit is 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 odometer reset switch signal circuit is low for greater than 60 seconds.

Action Taken When the DTC Sets

The IPC ignores the trip odometer reset switch signal circuit. The IPC sets DTC B2823.

Conditions for Clearing the DTC

    • A history DTC B2823 will clear after a complete ignition cycle.
    • The IPC receives the clear code command from the scan tool.

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 IPC Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

2

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

Does the scan tool display Inactive?

Go to Step 3

Go to Step 4

3

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

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

Go to Diagnostic Aids

Go to Step 4

4

Important: Perform the compass calibration and variance procedure on the replacement IPC.

Replace the IPC. Refer to Instrument Cluster Replacement .

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.

Does the DTC reset?

Go to Step 2

System OK