Driver Information Center (DIC) Switch Inoperative

Driver Information Center (DIC) Switch Inoperative

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.

Circuit/System Description

The driver information switches are normally open momentary switches. Power is provided to the driver information center (DIC) switches via the instrument panel cluster (IPC) ignition 1 voltage circuit. The IPC interfaces with the DIC switches via 4 discreet circuits. Each switch input to the cluster is pulled low or grounded when a switch is activated. The DIC switches include the SET/RESET, MENU, INFO UP, and INFO DOWN switches.

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)

Circuit/System Testing

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

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

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

• If any are not Inactive, test the appropriate switch signal circuit for a short to ground. If the circuits test normal, replace the IPC

* Set/Reset Switch Signal Circuit Terminal 2
* Menu Switch Signal Circuit Terminal 5
* Info. Up Switch Signal circuit Terminal 7
* Info. Down Switch Signal Circuit Terminal 8

4. Ignition ON, install a 3-amp fused jumper wire between the signal circuits and ground. Verify all of the scan tool DIC Switch parameters are Active.

• If any are not Active, test the appropriate switch signal circuit for a short to voltage or an open/high resistance. If the circuits test normal, replace the IPC.

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

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 IPC replacement, setup, and programming