C0580
DTC C0575, C0580, C0585, or C0590
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptors
DTC C0575 01
- Left Front Damper Actuator Circuit Short to Battery
DTC C0575 02
- Left Front Damper Actuator Circuit Short to Ground
DTC C0575 04
- Left Front Damper Actuator Circuit Open
DTC C0575 0D
- Left Front Damper Resistance Above Threshold
DTC C0575 0E
- Left Front Damper Resistance Below Threshold
DTC C0575 1A
- Left Front Damper Bias Level out of Range
DTC C0580 01
- Right Front Damper Actuator Circuit Short to Battery
DTC C0580 02
- Right Front Damper Actuator Circuit Short to Ground
DTC C0580 04
- Right Front Damper Actuator Circuit Open
DTC C0580 0D
- Right Front Damper Resistance Above Threshold
DTC C0580 0E
- Right Front Damper Resistance Below Threshold
DTC C0580 1A
- Right Front Damper Bias Level out of Range
DTC C0585 01
- Left Rear Damper Actuator Circuit Short to Battery
DTC C0585 02
- Left Rear Damper Actuator Circuit Short to Ground
DTC C0585 04
- Left Rear Damper Actuator Circuit Open
DTC C0585 0D
- Left Rear Damper Resistance Above Threshold
DTC C0585 0E
- Left Rear Damper Resistance Below Threshold
DTC C0585 1A
- Left Rear Damper Bias Level out of Range
DTC C0590 01
- Right Rear Damper Actuator Circuit Short to Battery
DTC C0590 02
- Right Rear Damper Actuator Circuit Short to Ground
DTC C0590 04
- Right Rear Damper Actuator Circuit Open
DTC C0590 0D
- Right Rear Resistance Above Threshold
DTC C0590 0E
- Right Rear Resistance Below Threshold
DTC C0590 0A
- Right Rear Damper Bias Level out of Range
Diagnostic Fault Information
Circuit/System Description
The suspension control module commands variable levels of current to each shock absorber actuator in response to rough road, braking or abrupt steering maneuver driving conditions. The current variation is performed by pulse width modulation (PWM) of the system voltage. The suspension control module continuously measures the actual current of each actuator. When a deviation between commanded and actual current is detected, a DTC is set.
Conditions for Running the DTC
System voltage is between 9-16 V.
Conditions for Setting the DTC
C0575 01, C0580 01, C0585 01, and C0590 01
* A short to voltage or short to ground on the control high circuit is detected.
* A short to ground on the control low circuit is detected.
C0575 02, C0580 02, C0585 02, and C0590 02
* An open or high resistance on the control high or control low circuit is detected.
* A short to voltage on the control low circuit is detected.
C0575 0D, C0575 0E, C0575 1A, C0580 0D, C0580 0E, C0580 1A, C0585 0D, C0585 0E, C0585 1A, C0590 0D, C0590 0E, C0590 1A
An erratic current on the actuator circuit is detected.
Action Taken When the DTC Sets
* The electronic suspension control is disabled for the duration of the ignition cycle.
* The driver information center displays the SERVICE SUSPENSION SYSTEM message.
Conditions for Clearing the DTC
* A present DTC will clear on the next consecutive malfunction-free ignition cycle.
Reference Information
Schematic Reference
Electronic Suspension Control Schematics Electrical Diagrams
Connector End View Reference
Component Connector End Views Fuel Pump and Level Sensor Assembly - Primary
Description and Operation
Electronic Suspension Control Description and Operation Description and Operation
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
Ignition ON, with a scan tool, command the Damper Actuator Increase and Decrease while observing the Damper Actuator Command parameter. The parameter should vary between 0-1 000 mA. Listen/feel the Q37 Shock Absorber Actuator. The component should activate when changing between the commanded states.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the appropriate Q37 Shock Absorber Actuator.
2. Perform this setup step in the following order:
1. Connect a test lamp and ampmeter in series between both Q37 Shock Absorber Actuator harness connector control circuit terminals.
2. Ignition ON, with a scan tool, attempt to clear all K19 Suspension Control Module DTCs (codes may not clear).
3. With a scan tool, command the Damper Actuator to Increase the amperage to approximately 400 mA and decrease to 0 mA while comparing the ampmeter displayed values and scan tool Damper Actuator Command parameter displayed values. Verify the following:
* The test lamp is illuminated.
* The ampmeter displayed values and scan tool Damper Actuator Command parameter displayed values change and are simultaneously within 15 mA of each other.
• If the test lamp is not illuminated and/or the values are not within the specified range, test both control circuits for a short to voltage, short to ground, or open/high resistance. If all circuits test normal, replace the K19 Suspension Control Module.
4. If all circuits test normal, test or replace the Q37 Shock Absorber Actuator.
Component Testing
Static Test
1. Ignition OFF, disconnect the harness connector at the appropriate Q37 Shock Absorber Actuator.
2. Test for 2-3 ohms between the Q37 Shock Absorber Actuator control terminals.
• If not within the specified range, replace the Q37 Shock Absorber Actuator.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
* Strut, Strut Component, or Spring Replacement Front Suspension
* Shock Absorber Replacement (w/FE5) Shock Absorber Replacement (w/FE5)Shock Absorber Replacement (wo/FE5) Shock Absorber Replacement (wo/FE5)
* Control Module References Control Module References for suspension control module replacement, programming and setup