C0693

Circuit Description
Battery voltage for the Continuously Variable Road Sensing Suspension (CVRSS) strut actuators is supplied to the CVRSS module through the damper drive relay circuit. The CVRSS module energizes the damper relay by opening and closing an internal ground for the damping relay coil control circuit.
The CVRSS module monitors the damper drive relay circuit and each strut actuator high-side and low-side drive circuits for fault conditions.

Conditions for Running the DTC
The ignition is ON.

Conditions for Setting the DTC
DTC C0690
The following conditions must be present to set the DTC:
^ The CVRSS module detects voltage less than a preset value in the damper drive relay circuit during a damper relay valve OFF state test.
^ The fault is detected during three consecutive ignition cycles, or during the same ignition cycle after clearing the DTC with a scan tool.

DTC C0691
The following conditions must be present to set the DTC:
^ The CVRSS module detects a loss of voltage in the damper drive relay circuit.
^ The fault is detected during three consecutive ignition cycles, or during the same ignition cycle after clearing the DTC with a scan tool.

DTC C0693
The following conditions must be present to set the DTC:
^ The CVRSS module detects voltage greater than a preset value in the damper drive relay circuit during a damper relay ON state test.
^ The fault is detected during three consecutive ignition cycles, or during the same ignition cycle after clearing the DTC with a scan tool.

Action Taken When the DTC Sets
^ ALL the strut actuators may be disabled by commanding 0% PWM duty cycle.
^ The vehicle ride will be soft.
^ The vehicle speed will be limited.
^ The SERVICE RIDE CONTROL message 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 CVRSS module no longer sees an out of range feedback voltage in the damper drive relay circuit. The DTC will clear if the fault does not return after 50 consecutive ignition cycles.

Diagnostic Aids
Refer to Testing for Intermittent and Poor Connections in Diagrams/Diagnostic Aids.

Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
2. Listen for an audible click when the damper relay operates. Command both the ON and OFF states. Repeat the commands as necessary.
3. Tests for voltage at the coil side of the damper relay. The CVRTD fuse supplies power to the coil side of the damper relay.
4. Verifies that the CVRSS module is providing ground to the damper relay.
5. Tests if ground is constantly being applied to the damper relay.