2010 Cadillac Truck SRX FWD V6-3.0L Page 665

2010 Cadillac Truck SRX FWD V6-3.0L Page 665

B3567

DTC B3567

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC B3567 01

- Info Display Select Switch Circuit Short to Battery

DTC B3567 02

- Info Display Select Switch Circuit Short to Ground

DTC B3567 04

- Info Display Select Switch Circuit Open

DTC B3567 59

- Info Display Select Switch Circuit Protection Time-Out

Circuit/System Description

The driver information center switch is a multiplexed switch. Battery power is provided to the driver information center switch via the instrument

cluster. The driver information center switch signal circuit is pulled up to battery voltage in the instrument cluster. The instrument cluster also

provides the driver information center switch with a low reference. The switch input to the instrument cluster is pulled low when a switch is

activated. The driver information center switch is a momentary contact switch that connects a series of resistors in a resistor ladder format. The

instrument cluster monitors the driver information center switch signal circuit to determine the driver information center switch inputs. Each switch

state Menu, Up, Down, Clear corresponds to a certain resistance value. The instrument cluster determines the switch pressed by the voltage drop

across the resistors.

Conditions for Running the DTC

* The ignition is in OFF, ACCESSORY or RUN position.

* The system voltage is between 9-16 V.

Conditions for Setting the DTC

B3567 01

The instrument cluster detects that the driver information center switch signal circuit is shorted to battery.

B3567 02

The instrument cluster detects that the driver information center switch signal circuit is shorted to ground.

B3567 04

The instrument cluster detects that the driver information center switch signal circuit is open.

B3567 59

The instrument cluster detects that the driver information center switch is stuck.

Action Taken When the DTC Sets

The instrument cluster ignores the driver information center switch inputs.

Conditions for Clearing the DTC

The DTC will become history if the instrument cluster no longer detects a malfunction.