Driver Information Center Switch Malfunction

Driver Information Center Switch Malfunction

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

The driver information center switches are multiplexed switches that are part of the Turn Signal/Multifunction Switch.

The Instrument Cluster provides 5 volts to the MENU switch. The MENU switch is a momentary contact switch that is provided ground through the Turn Signal/Multifunction Switch ground circuit.

The Instrument Cluster provides battery voltage to the UP, DOWN, SET switches. The UP, DOWN, SET switch signal circuits are pulled up to battery voltage in the Instrument Cluster. The Instrument Cluster also provides the UP, DOWN, SET switches with a low reference circuit. The UP, DOWN, SET switch signal circuit is pulled low when a switch is activated. The driver information center UP, DOWN, SET switches are momentary contact switches that connect a series of resistors in a resistor ladder format. The instrument cluster monitors the driver information center UP, DOWN, SET switch signal circuit to determine the switch position. Each switch state - UP, DOWN, SET- corresponds to a certain resistance value. The instrument cluster determines the switch pressed by the voltage drop across the resistors.

Reference Information

Schematic Reference

Instrument Cluster Schematics Instrument Cluster Schematics

Connector End View Reference

Component Connector End Views Outside Rearview Mirror - Driver

Description and Operation

Driver Information Center (DIC) Description and Operation Driver Information Center (DIC)

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

Scan Tool Reference

Control Module References Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.

2. Verify the driver information center set, up and down function changes when pressing the set, up or down switch.

• If the driver information center does not change
Refer to Set, Up and Down Switch Malfunction

• If the driver information center changes

3. Verify the driver information center menu function changes when pressing the menu switch.

• If the driver information center does not change
Refer to Menu Switch Malfunction

• If the driver information center changes

4. All OK.

Circuit/System Testing

Menu Switch Malfunction

1. Ignition ON.

2. Test for 4.8-5.2 V between the signal circuit terminal 5 and ground.

• If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the P16 instrument cluster.

2. Test for infinite resistance between the signal circuit and ground.

• If less than infinite resistance, repair the short to ground on the circuit.

• If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, replace the P16 instrument cluster.

• If greater than 5.2 V

1. Ignition OFF, disconnect the harness connector at the P16 instrument cluster, ignition ON.

2. Test for less than 1 V between the signal circuit and ground.

• If 1 V or greater, repair the short to voltage on the circuit.

• If less than 1 V, replace the P16 instrument cluster.

• If between 4.8-5.2 V

3. Test for less than 10 ohms between the ground circuit terminal 3 and ground.

• If 10 ohms or greater
Repair the open/high resistance in the circuit

• If less than 10 ohms

4. Test or replace the S78 Turn Signal/ Multifunction Switch.

Set, Up and Down Switch Malfunction

1. Ignition OFF and all vehicle systems OFF, disconnect the X1 harness connector at the S78 Turn Signal/ Multifunction Switch, ignition ON.

2. Test for less than 10 ohms between the low reference circuit terminal 6 and ground.

• If 10 ohms or greater

1. Ignition OFF, disconnect the harness connector at the P16 instrument cluster.

2. Test for less than 2 ohms in the low reference circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, replace the P16 instrument cluster.

• If less than 10 ohms

3. Test for 11.8-12.2 V between the signal circuit terminal 12 and ground.

• If less than 11.8 V

1. Ignition OFF, disconnect the harness connector at the P16 instrument cluster.

2. Test for infinite resistance between the signal circuit and ground.

• If less than infinite resistance, repair the short to ground on the circuit.

• If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, replace the P16 instrument cluster.

• If greater than 12.2 V

1. Ignition OFF, disconnect the harness connector at the P16 instrument cluster, ignition ON.

2. Test for less than 1 V between the signal circuit and ground.

• If 1 V or greater, repair the short to voltage on the circuit.

• If less than 1 V, replace the P16 instrument cluster.

• If between 11.8-12.2 V

4. Test or replace the S78 Turn Signal/ Multifunction Switch.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

* Turn Signal Switch Replacement Turn Signal Switch Replacement

* Control Module References Control Module References for the instrument cluster replacement, programming and setup