C0690

Circuit Description
The suspension control module provides a common ground (low reference) for all four of the shock solenoid valves. The suspension control module monitors the return voltage on the low reference circuit (ground) for a voltage out of range condition.


Conditions for Running the DTC
Continuously with the ignition on.


Conditions for Setting the DTC
The suspension control module senses a low reference voltage out of range condition.


Action Taken When the DTC Sets
^ Disable all shock solenoid valve outputs.
^ The "SERVICE RIDE CONTROL" message will be displayed.
^ Stores a DTC C0690 in the suspension control module memory.


Conditions for Clearing the DTC
^ The suspension control module senses the correct voltage on the low reference circuit upon the next ignition cycle.
^ Using a scan tool.
^ A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.


Diagnostic Aids
The following conditions may cause a malfunction to occur:
^ An open in all 4 low reference circuits of the shock solenoid valves.
^ An open in the solenoid ground circuit at the suspension control module.
^ An open in G410 or SP410.


Test Description
The numbers) below refer to the step number(s) on the diagnostic table.
3. Tests whether the condition is module, system, or condition related.
4. Tests whether the condition has been corrected or identified as specified in the supporting text.
5. Tests all 4 low reference circuits of the shock solenoid valves for an open.
6. Tests all 4 control circuits of the shock solenoid valves for an open.
7. Tests the solenoid ground circuit at the suspension control module, should be less than 0.5 ohm.
9. Clear DTCs and checks to see if DTC will reset.