2010 Cadillac Truck SRX FWD V6-3.0L Page 1567

2010 Cadillac Truck SRX FWD V6-3.0L Page 1567

P0567

DTC P0564, P0567, or P0568

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 P0564

- Cruise Control Multifunction Switch Circuit

DTC P0567

- Cruise Control Resume Switch Circuit

DTC P0568

- Cruise Control Set Switch Circuit

Diagnostic Fault Information

Circuit/System Description

The cruise control switch is an input to the body control module (BCM). The BCM monitors the cruise control on/off, set/coast, resume/accelerate

and cancel switches via the cruise control switch signal circuit in order to detect when the driver has requested to perform a cruise control function.

The BCM detects a specific voltage signal on the cruise control switch signal circuit when a switch is applied. The BCM sends a serial data

message to the engine control module (ECM) indicating the status of the cruise control switches.

Conditions for Running the DTC

* The cruise switch is ON.

* The ignition is ON.

Conditions for Setting the DTC

* The BCM detects an invalid voltage signal on the cruise control switch signal circuit for greater than 2 seconds and sends a serial data

message to the ECM. The ECM sets these DTCs when the message is received.

* The ECM runs this diagnostic every 0.05 second.

Actions Taken When the DTC Sets

DTCs P0564, P0567, or P0568 are type C DTCs.

Conditions for Clearing the DTC

DTCs P0564, P0567, or P0568 are type C DTCs.

Reference Information

Schematic Reference

Cruise Control Schematics (See: Cruise Control/Diagrams/Electrical Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Cruise Control Description and Operation (See: Cruise Control/Description and Operation)