Driver Information Center (DIC) Switch(es) Inoperative

DRIVER INFORMATION CENTER (DIC) SWITCH(ES) INOPERATIVE

DIAGNOSTIC FAULT INFORMATION

IMPORTANT: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Testing and Inspection

CIRCUIT/SYSTEM DESCRIPTION




The driver information switches are normally open momentary switches. Power is provided to the DIC switches via the IPC ignition 1 voltage circuit. The IPC ignition 1 voltage circuit is fused in the body control module (BCM). The instrument panel cluster (IPC) interfaces with the driver information center (DIC) switches via two discreet circuits. The switch input to the cluster is pulled low or grounded when a switch is activated. The IPC reads the voltage at the analog input to determine which switch(es) is pressed. The switch input to the cluster is set up in a resistor ladder format. The DIC switches include the INFO and the SELECT/RESET switches. A simultaneous press and hold of the INFO and SELECT/RESET switch activates the MENU switch. The MENU switch is the third embedded switch used to activate the various DIC menus.

REFERENCE INFORMATION

Schematic Reference
- Instrument Cluster Schematics
- Power Distribution Schematics
- Ground Distribution Schematics

Connector End View Reference
- Instrument Panel, Gages, and Console Connector End Views
- Computer/Integrating Systems Connector End Views

Electrical Information Reference
- Circuit Testing
- Connector Repairs
- Testing for Intermittent Conditions and Poor Connections
- Wiring Repairs

Scan Tool Reference
Scan Tool Data List

CIRCUIT/SYSTEM TESTING
1. With the ignition OFF, disconnect the DIC switch.
2. Connect a test lamp between the DIC switch ignition 1 voltage circuit and a good ground.
3. Turn the ignition ON, with the engine OFF.
- If the test lamp does not illuminate, check the DIC switch ignition 1 voltage circuit for an open or a high resistance.
4. Connect a test lamp between the DIC switch ignition 1 voltage circuit and the DIC switch ground circuit.
- If the test lamp does not illuminate, check the DIC switch ground circuit for an open or a high resistance.
- If the test lamp does illuminate, check the DIC switch signal circuits for an open or a high resistance
- If the DIC switch signal circuits tests normal, replace the DIC switch.

REPAIR INSTRUCTIONS

IMPORTANT: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Driver Information Center Switch Replacement