2010 Cadillac CTS Sedan AWD V6-3.6L Page 735

2010 Cadillac CTS Sedan AWD V6-3.6L Page 735

* 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

commanded between the ON and OFF state.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate suspension damper.

2. Perform this setup step in the following order:

1. Connect a test lamp between the damper connector control circuit terminal A and control circuit terminal B.

2. Ignition ON, with a scan tool, clear all ESC module DTCs.

3. Command the damper ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.

瀚慖f the test lamp is always ON, test the control circuit terminal A for a short to voltage. If the circuit tests normal, replace the ESC module.

瀚慖f the test lamp is always OFF, test the control circuits listed below. If all circuits test normal, replace the ESC module.

* Control circuit terminal A for a short to ground or open/high resistance.

* Control circuit terminal B for an open/high resistance or short to voltage.

4. If all circuits test normal, test or replace the suspension damper.

Component Testing

1. Ignition OFF, disconnect the harness connector at the appropriate suspension damper.

2. Test for 0.7-3.3ohm between the control circuit terminal A and the control circuit terminal B of the suspension damper.

瀚慖f not within the specified range, replace the suspension damper.

Repair Instructions

* Shock Absorber Replacement (See: Steering and Suspension/Suspension/Suspension Strut / Shock Absorber/Service and Repair/Rear

Suspension Shock Absorber)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ESC replacement, setup, and programming

Repair Verification

1. Install any components or connectors that have been removed or replaced during diagnosis.