2010 Cadillac CTS Sedan AWD V6-3.6L Page 737

2010 Cadillac CTS Sedan AWD V6-3.6L Page 737

Circuit/System Description

The electronic suspension control module (ESCM) commands variable levels of pulse width modulated current to each damper in response to rough

road, or abrupt steering maneuver driving conditions. The ESC module continuously compares each dampers command state with the state of their

feedback circuits to ensure they agree.

Conditions for Running the DTC

* Battery voltage is between 9-16 volts

* Ignition ON for 30 seconds

Conditions for Setting the DTC

* The damper coil or the circuits to the coil are shorted to ground, shorted to voltage, or open for 3 consecutive ignition ON cycles.

* The vehicle must be driven over 4.8 km/h (3 mph).

Action Taken When the DTC Sets

* The driver information center (DIC) displays a SERVICE RIDE CONTROL or SERVICE SUSPENSION SYSTEM message.

* If the DTC symptom 01 is stored, the electronic suspension control (ESC) system is disabled.

* If the DTC symptom 02 or 04 is stored, the suspect damper is disabled.

Conditions for Clearing the DTC

* A current DTC will clear on the next consecutive malfunction-free ignition cycle.

* A history DTC will clear after 50 consecutive malfunction-free ignition cycles.

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)

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

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

Ignition ON, command the damper actuator ON and OFF while jouncing the vehicle in the front and rear. Suspension should change stiffness when