Diagnostic Instructions

DTC Descriptors

DTC B3567 01: Driver Information Center (DIC) Select Switch Circuit Short To Battery

DTC B3567 59: Driver Information Center (DIC) Select Switch Circuit/Component Protection Time-Out

DTC B3567 01: Head-Up Display (HUD) Select Switch Circuit Short To Battery

DTC B3567 59: Head-Up Display (HUD) Select Switch Circuit/Component Protection Time-Out

Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
DIC Switch Signal Circuit	--	--	B3567 01	B3567 59
HUD Switch Signal Circuit	--	--	B3567 01	B3567 59

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 ignition 1 voltage circuit is fused in the body control module (BCM). The IPC interfaces with the DIC switches via 3 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 PERSONALIZATION, SET/RESET, TRIP/FUEL, AND VEHICLE INFO switches. A stuck switch or a short to battery sets a DTC.

The head-up display (HUD) is a display system that optically projects vehicle information onto the windshield. The HUD has an electric tilt adjust that is controlled by the up and down switches. Operating these switches directs the motor to move the HUD image up or down on the windshield. There is also a page switch that can scroll through multiple messages present on the HUD. The HUD is also equipped with automatic dimming. Dimming is also controlled by a HUD dimmer switch. All three switches control the HUD by grounding the HUD switch input signals to ground. The dimmer switch uses a variable resistor to control HUD intensity where the lower the resistance, the brighter the HUD display.

Conditions for Running the DTC

The ignition is in ACCESSORY or RUN.

Conditions for Setting the DTC

Action Taken When the DTC Sets

The IPC ignores the DIC switch inputs or the HUD ignores the HUD switch inputs.

Conditions for Clearing the DTC

Diagnostic Aids

Reference Information

Schematic Reference

Instrument Cluster Schematics

Connector End View Reference

Description and Operation

Electrical Information Reference

Scan Tool Reference

Scan Tool Data List

Circuit/System Testing

DIC Switches

1. Ignition OFF, disconnect the harness connector at the DIC switch assembly.
2. Verify all of the scan tool DIC Switch parameters are Inactive.

⇒	If not Inactive, replace the IPC.

3. Ignition ON, install a 3-amp fused jumper wire between the DIC signal circuit and ground. Verify all of the scan tool DIC Switch parameters except the TRIP/FUEL parameter are Active.

⇒	If not Active, test the DIC signal circuit of the DIC switch assembly for a short to voltage. If the circuit tests normal, replace the IPC.

4. Ignition ON, install a 3-amp fused jumper wire between the trip/fuel signal circuit and ground. Verify that the scan tool DIC TRIP/FUEL Switch parameter is Active.

⇒	If not Active, test the trip/fuel signal circuit of the DIC switch assembly for a short to voltage. If the circuit tests normal, replace the IPC.

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

HUD Switches

1. Ignition OFF, disconnect the harness connector at the HUD switch assembly.
2. Verify all of the scan tool HUD Switch parameters are Inactive.

⇒	If not Inactive, replace the HUD.

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

⇒	If not Active, test the signal circuit of the HUD switch assembly for a short to voltage. If the circuit tests normal, replace the HUD.

4. If all circuits test normal, test or replace the HUD switch assembly.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.