Circuit Description
The suspension control module performs internal checks on hardware and software (calibrations) to ensure valid operation.
Conditions for Running the DTC
Upon key on with the ignition in the ON/RUN position.
Conditions for Setting the DTC
The suspension control module detects an error with its microprocessor.
Action Taken When the DTC Sets
| • | Disable all functions, EVO, rear leveling and RTD. |
| • | The SERVICE RIDE CONTROL message will be displayed. |
| • | Stores a DTC C0550 in the suspension control module memory. |
Conditions for Clearing the DTC
| • | Using the scan tool. |
| • | A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present. |
Diagnostic Aids
Important: Calibrate the suspension control module before replacement and cycle the ignition off and on to see if the DTC C0550 resets.
The replacement suspension control module must be calibrated when replacement is necessary.Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Suspension Controls Schematics | |||
1 | Did you perform the RTD Diagnostic System Check? | Go to Step 2 | |
Important: Use the scan tool to perform the set up procedure (re-calibrate) located under Special Functions (F8: Recalibration) for the suspension control module. Does the scan tool display DTC C0550? | Go to Step 3 | ||
|
Important: After replacement, use the scan tool to perform the set up procedure (re-calibrate) located under Special Functions (F8: Recalibration) for the suspension control module. Replace the suspension control module. Refer to Electronic Suspension Control Module Replacement . Did you complete the replacement? | System OK | -- | |
