Odometer Trip/Reset Switch Inoperative

Odometer Trip/Reset Switch Inoperative

Diagnostic Fault Information

Important: Always perform the Diagnostic System Check - Vehicle Initial Inspection and Diagnostic Overview

Circuit/System Description

The instrument panel cluster (IPC) calculates the mileage based on the vehicle speed information from the engine control module (ECM). The ECM sends a serial data message to the IPC indicating the value of the odometer. The IPC odometer information is displayed in the driver information center (DIC) and is accessed by pressing the TRIP/FUEL switch until the odometer and trip odometer information is displayed from the menu. The odometer will display 'error' if an internal memory failure is detected. The odometer displays either miles or kilometers and the desired units can be accessed by pressing the TRIP/FUEL switch.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the DIC switch.
2. Test for less than 1 ohm of resistance between the DIC switch ground circuit and ground.

• If greater than 1 ohm, test the ground circuit for an open/high resistance.

3. Ignition ON, verify the scan tool Trip/Fuel Switch parameter is Inactive.

• If not inactive, test the signal circuit for a short to ground. If the circuit tests normal, replace the IPC.

4. Install a 3-Amp fused jumper wire between the signal circuit and ground. Verify the scan tool Trip/Fuel Switch parameter is Active.

• If not active, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the IPC.

5. If all circuits test normal, test or replace the DIC switch.

Repair Instructions

Important: Always perform the Diagnostic Repair Verification Verification Tests

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