Driver Information Center (DIC) Switch Malfunction

Driver Information Center (DIC) Switch Malfunction

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.

Diagnostic Fault Information





Circuit/System Description

The driver information center (DIC) switch is a multiplexed momentary contact switch that functions as a DIC/dimmer switch. Battery power is provided to the DIC switch via the instrument panel cluster (IPC). The IPC provides the DIC switch with a ground. The switch input to the cluster is pulled low when a switch is activated. The IPC determines the switch pressed by monitoring the signal circuit voltage.

Reference Information
Schematic Reference

Instrument Cluster Schematics (Instrument Cluster Schematics)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Driver Information Center (DIC) Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information.

Circuit/System Verification

Ignition ON, verify that when the DIC switches are pressed and released the DIC scan tool parameters toggle between Active and Inactive.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the driver information center (DIC) switch.
2. Ignition OFF, test for less than 5 ohms between the ground circuit terminal 7 and ground.

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

3. Ignition ON, verify that all scan tool DIC Switch parameters are Inactive.

• If any are not Inactive, test the signal circuit terminals listed below for a short to ground. If the circuit tests normal, replace the IPC.

* Information Down Switch Signal Circuit Terminal 3
* Information Up Switch Signal Circuit Terminal 1
* Options Switch Signal Circuit Terminal 5
* Reset Switch Signal Terminal 6

4. Ignition ON, install a 3-amp fused jumper wire between the DIC switch signal circuit terminals listed below and the ground circuit terminal 7. Verify that all scan tool DIC switch parameters are Active.

* Information Down Switch Signal Circuit Terminal 3
* Information Up Switch Signal Circuit Terminal 1
* Options Switch Signal Circuit Terminal 5
* Reset Switch Signal Terminal 6

• If any are 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

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Driver Information Display Switch Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for the IPC replacement, setup and programming