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.
For a full system schematic refer to: Suspension Controls Schematics.


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
^ DTC C0690 will be stored in memory.
^ Disable all shock solenoid valve outputs.
^ The "SERVICE RIDE CONTROL" message will be displayed.


Conditions for Clearing the MIL/DTC
^ The suspension control module senses the correct voltage on the low reference circuit upon the next ignition cycle.
^ A history DTC will clear after not seeing the malfunction for 100 consecutive ignition cycles.
^ Using a scan tool.


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


Test Description
The number(s) 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.
8. Clear DTCs and checks to see if DTC will reset.