Diagnostic Instructions

DTC Descriptors

DTC B3567 01: Driver Information Center Select Switch Circuit Short to Battery

DTC B3567 59: Driver Information Center 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	1	1	B3567 01	B3567 59
DIC Select Switch Signal	1	1	1	P3567 59
HUD Dimming Switch Signal	2	2	B3567 01	B3567 59
1. Driver Information Center (DIC) Switch Malfunction 2. Head-Up Display (HUD) Malfunction

Circuit/System Description

The driver information center (DIC) switch is a multiplexed switch that functions as a DIC/dimmer switch. The DIC switch is also used for the head-up-display (HUD) (if equipped). The switch then functions as the HUD/DIC/Dimmer switch. The instrument panel cluster (IPC) only monitors the DIC switch inputs. The dimmer switch is monitored by the instrument panel module (IPM) and the HUD switch inputs is monitored by the HUD. Battery power is provided to the DIC switch via the instrument panel cluster (IPC). The IPC also provides the DIC switch with a low reference. The switch input to the IPC is pulled low or grounded when a switch is activated. The DIC switch is a momentary contact switch that connects a series of resistors in a resistor ladder format. The IPC monitors the DIC switch signal circuit to determine the DIC switch inputs. Each switch state - INFO UP, INFO DOWN, INFO RESET, ENGLISH/METRIC, TRIP RESET- corresponds to a certain resistance value. The IPC determines the switch pressed by the voltage drop across the resistors.

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. The HUD is equipped with a page switch that scrolls through multiple messages present on the HUD. The HUD is also equipped with automatic dimming. Dimming is controlled by the HUD dimmer switch. All three switches control the HUD by grounding the HUD switch input signals. The dimmer switch uses a variable resistor to control the intensity of the HUD display.

Conditions for Running the DTC

The ignition is in ACCESSORY or RUN.

Conditions for Setting the DTC

B3567 59

The IPC detects that the DIC switch is stuck.

B3567 01

The IPC detects that the DIC switch signal circuit is shorted to battery.

B3567 59

The HUD detects that the HUD switch is stuck.

B3567 01

The HUD detects that the HUD switch signal circuit is shorted to battery.

Action Taken When the DTC Sets

Conditions for Clearing the DTC

Diagnostic Aids

Reference Information

Schematic Reference

Connector End View Reference

Component Connector End Views

Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON, verify that when the DIC switches are pressed and released, the DIC scan tool parameters toggle between Active and Inactive.
2. Ignition ON, verify that when the HUD switches (if equipped) are pressed and released the HUD scan tool parameters toggle between Active and Inactive.

Circuit/System Testing

DIC Switches

1. Ignition OFF, disconnect the harness connector at the DIC switch assembly.
2. Ignition OFF, test for less than 1 ohm between the low reference circuit terminal 8 and ground.

⇒	If greater than the specified range, test the low reference circuit for an open/high resistance.

3. Ignition OFF, test for less than 5 ohms between the ground circuit terminal 12 and ground.

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

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

⇒	If any are not Inactive, test the signal circuit terminal 9 or terminal 10 for a short to ground. If the circuit tests normal, replace the IPC.

5. Ignition ON, install a 3-amp fused jumper wire between the signal circuit terminal 9 and the low reference circuit terminal 8. Verify the scan tool DIC Switch parameters, except the Trip A/B. parameter, 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.

6. Ignition ON, install a 3-amp fused jumper wire between the signal circuit terminal 10 and ground. Verify the scan tool Trip A/B. parameter is Active.

⇒	If not Active, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the IPC.

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

HUD Switch

1. Ignition OFF, disconnect the harness connector at the HUD switch assembly.
2. Ignition OFF, test for less than 1 ohm between the low reference circuit terminal 5 and ground.

⇒	If greater than the specified range, test the low reference circuit for an open/high resistance.

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

⇒	If any are not Inactive, test the signal circuit terminal listed below for a short to ground. If the circuit tests normal, replace the HUD.

•	Terminal 4

•	Terminal 6

•	Terminal 7

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

•	Terminal 4

•	Terminal 6

•	Terminal 7

⇒	If any are not Active, test the signal circuit for a short to voltage. If the circuits test normal, replace the HUD.

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

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.