DTC C0575, C0580, C0585, or C0590 HSV
Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category |
DTC Descriptor
DTC C0575 01: Left Front Solenoid/Motor/Actuator Failure Short to BatteryDTC C0575 02: Left Front Solenoid/Motor/Actuator Failure Short to Ground
DTC C0575 04: Left Front Solenoid/Motor/Actuator Failure Open Circuit
DTC C0580 01: Right Front Solenoid/Motor/Actuator Failure Short to Battery
DTC C0580 02: Right Front Solenoid/Motor/Actuator Failure Short to Ground
DTC C0580 04: Right Front Solenoid/Motor/Actuator Failure Open Circuit
DTC C0585 01: Left Rear Solenoid/Motor/Actuator Failure Short to Battery
DTC C0585 02: Left Rear Solenoid/Motor/Actuator Failure Short to Ground
DTC C0585 04: Left Rear Solenoid/Motor/Actuator Failure Open Circuit
DTC C0590 01: Right Rear Solenoid/Motor/Actuator Failure Short to Battery
DTC C0590 02: Right Rear Solenoid/Motor/Actuator Failure Short to Ground
DTC C0590 04: Right Rear Solenoid/Motor/Actuator Failure Open Circuit
Circuit Description
The electronic suspension control (ESC) module commands variable levels of pulse width modulated current to each dampener in response to rough and abrupt steering manoeuvring driving conditions. The ESC module continuously compares each dampeners command state with the state of their feedback circuits to ensure they agree.
Conditions for Running the DTC
The ignition is on.
Conditions for Setting the DTC
The dampener coil or the circuits to the coil are shorted to ground, shorted to voltage or open for 3 consecutive ignition ON cycles.
Action Taken When the DTC Sets
| • | The ESC module illuminates the LED in the ESC switch. |
| • | 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 dampener 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. |
| • | Using a Tech2 Scan tool. |
Reference Information
Schematic Reference
Electronic Suspension Control Schematics .
ESC Malfunction Indicator Lamp
When all DTC's are cleared, and the Diagnostic System Check - Vehicle has been performed the ESC malfunction indicator lamp may stay illuminated for a period of up to 5 seconds when the ignition switch is moved to the "off" position. The ESC malfunction indicator lamp should switch off when the ignition is switched to the "on" position.
Connector End View Reference
Component Connector End Views .
Electrical Information Reference
| • | Circuit Testing . |
| • | Wiring Repairs . |
Scan Tool Reference
Circuit/System Verification
- Verify that no other DTCs are present, if any other DTCs are present diagnose those DTCs prior to any circuit or component testing.
- Ignition ON, observe the scan tool Dampener Actuator Data parameter. The reading should be 0% with vehicle stationary.
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the appropriate suspension dampener.
- Test for less than 1.0 ohm of resistance between the low reference circuit terminal and a known ground.
- Connect an approved test light between the control circuit terminal and the ground circuit terminal on the electrical harness.
- Command the appropriate dampener ON and OFF with a scan tool. The test lamp should illuminate ON and OFF when changing between the commanded states.
- If all circuits test normal, test or replace the applicable suspension dampener.
| ⇒ | If greater than 1.0 ohm, test the low reference circuit for an open/high resistance. |
| ⇒ | If all circuits test normal, test or replace the applicable suspension dampener. |
| ⇒ | If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the ESC module. |
| ⇒ | If the test lamp is always OFF, test for a short to ground or an open/high resistance on the control circuit. If the circuit tests normal, replace the ESC module. |
Component Testing
- Ignition OFF, disconnect the harness connector at the appropriate suspension dampener.
- Test for less than 2 ohms of resistance between the control circuit terminal and the low reference circuit terminal of the appropriate suspension dampener.
| ⇒ | If not within the specified range, replace the applicable suspension dampener. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Electronic Suspension Control Module Replacement for electronic suspension control module replacement, setup and programming. |
