The driver information center (DIC) switch is a multiplexed switch. Battery power is provided to the DIC switch via the instrument panel cluster (IPC) with the DIC switch signal circuit pulled up to battery voltage in the IPC. The switch input to the DIC is pulled low or grounded when a switch is activated. The IPC monitors the DIC switch signal circuit to determine the DIC switch inputs. Each switch state--SET/RESET, GAGES, TRIP ODOMETER, VEHICLE INFORMATION, FUEL--corresponds to a certain resistance value.

Schematic Reference

Instrument Cluster Schematics

Connector End View Reference

Electrical Information Reference

Scan Tool Reference

Scan Tool Data List

1. Ignition OFF, disconnect the harness connector at the driver information center (DIC).
2. Ignition OFF, test for less than 1 ohm of resistance between the DIC ground circuit and ground.

⇒	If greater than 1 ohm, test the ground reference 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 signal circuit(s) for a short to ground. If the circuit tests normal, replace the instrument panel cluster (IPC).

4. Ignition ON, install a 3-amp fused jumper wire between the signal circuit(s) and the ground reference circuit terminal 4. Verify all of the scan tool DIC switch parameters are Active.

⇒	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.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.