2010 Cadillac CTS Sedan AWD V6-3.6L Page 738

2010 Cadillac CTS Sedan AWD V6-3.6L Page 738

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.

2. Perform any adjustment, programming or setup procedures that are required when a component or module is removed or replaced.

3. Clear the DTCs.

4. Use the scan tool Diagnostic Counter Reset output control function to bypass the 3 consecutive ignition cycle requirement for setting a DTC.

This will ensure that if a DTC was to be reset during the repair verification process, it will be displayed on the scan tool.

5. Turn OFF the ignition for 60 seconds.

6. Turn ON the ignition.

7. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in

order to verify the DTC does not reset. If the DTC resets or another DTC is present, refer to the and perform the appropriate diagnostic

procedure

C0590

DTC C0575, C0580, C0585, or C0590

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 C0575 01

- Left Front Actuator Circuit - Short To Battery

DTC C0575 02

- Left Front Actuator Circuit - Short To Ground

DTC C0575 04

- Left Front Actuator Circuit - Open Circuit