2010 Cadillac CTS Sedan AWD V6-3.6L Page 742

2010 Cadillac CTS Sedan AWD V6-3.6L Page 742

Circuit/System Description

The electronic suspension control (ESC) module supplies a 5-volt reference signal to each suspension position sensor. The suspension position

sensors supply a signal of 0.35-4.75 volts to the ESC module which represents the position between the body and the wheel. The sensors are also

grounded through the ESC module.

Conditions for Running the DTC

* Battery voltage is between 9-16 volts.

* Ignition is ON.

Conditions for Setting the DTC

* The DTC is set when the ESC module measures a position sensor signal less than 0.35 volt or greater than 4.75 volts for more than 1 second

while the vehicle is operated under normal driving conditions.

* The fault is detected during 3 consecutive ignition cycles, or during the same ignition cycle after clearing the DTC with a scan tool.

Action Taken When the DTC Sets

* The ESC will enter the speed dependent damping mode.

* Both left and right normal force outputs will be set to the default output states.

* The ESC sends a message to the instrument panel cluster (IPC) to display a SERVICE RIDE CONTROL or SERVICE SUSPENSION

SYSTEM message.

Conditions for Clearing the DTC

A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present.

Reference Information

Schematic Reference

Electronic Suspension Control Schematics (See: Diagrams/Electrical Diagrams/Suspension Control ( Automatic - Electronic ))

Connector End View Reference

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

Description and Operation

Electronic Suspension Control Description and Operation (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic

)/Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)