Circuit Description
The electronic suspension control (ESC) module will detect ESC driver over current fault conditions and set DTC C0578, C0583, C0588 or C0593 by disabling the damper control relay. Although the ESC module will set these DTCs, each one represents a failure of the damper ESC driver within the ESC module which requires replacement of the ESC module.
DTC Descriptors
This diagnostic procedure supports the following DTCs:
| • | DTC C0578 Left Front Solenoid/Motor/Actuator Circuit High |
| • | DTC C0583 Right Front Solenoid/Motor/Actuator Circuit High |
| • | DTC C0588 Left Rear Solenoid/Motor/Actuator Circuit High |
| • | DTC C0593 Right Rear Solenoid/Motor/Actuator Circuit High |
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
| • | The DTC is set when the ESC module detects an internal driver fault. |
| • | The fault is detected during 3 consecutive ignition cycles, or during the same ignition cycle after clearing the DTC with the scan tool. |
Action Taken When the DTC Sets
The control module will disable ALL dampers by commanding 0 percent pulse width modulation (PWM) duty cycle, disabling the damper switched battery circuit, and sending a message to the powertrain control module (PCM) to limit vehicle speed. The VEHICLE SPEED LIMITED TO XXX MPH and SERVICE SUSPENSION SYS messages will be displayed.
Conditions for Clearing the MIL/DTC
| • | The scan tool can be used to clear the DTC. |
| • | The DTC is saved as history when the ESC module no longer senses the hardware fault and the ignition is cycled OFF and ON. The DTC will clear if the fault does not return after 50 consecutive ignition cycles. |
Test Description
The numbers below refer to the step numbers on the diagnostic table.
-
This step checks to see if the fault condition is active or intermittent.
-
This step checks to see if a history DTC C0578, C0583, C0588 or C0593 will return.
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This step checks to see if the vehicle has a known intermittent condition.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Suspension Controls Schematics | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
Inspect for DTC C0578, C0583, C0588 or C0593. Is DTC C0578, C0583, C0588 or C0593 displayed as a CURRENT fault, not a HISTORY fault? | Go to Step 5 | Go to Step 3 | |
Does the DTC reset? | Go to Step 5 | Go to Step 4 | |
Has this vehicle been serviced for DTC C0578, C0583, C0588 or C0593 previously? | Go to Step 5 | Go to Step 6 | |
5 | Replace the electronic suspension control (ESC) module. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 6 | -- |
6 |
Does the DTC reset? | Go to Step 2 | System OK |
