DTC C0575, C0580, C0585, or C0590 HSV
Diagnostic Instructions
DTC Descriptor
DTC C0575 01: Left Front Solenoid/Motor/Actuator Failure
Short to Battery
DTC 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
Scan Tool Reference
Control Module References
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.
⇒ | 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. |
- 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 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. |
- If all circuits test normal, test or replace the applicable suspension
dampener.
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.