Circuit Description
The Electronic Suspension Control (ELC) module estimates the road surface and communicates that information to the Electronic Brake Control Module (EBCM) using the Left and Right Normal Force outputs. The EBCM uses this information to provide improved rough-road braking performance.
Conditions for Running the DTC
| • | The Ignition is on. |
| • | The fault is detected during three consecutive ignition cycles, or during the same ignition cycle after clearing the DTC with a scan tool. |
Conditions for Setting the DTC
The DTC is set when the Electronic Suspension Control (ELC) module measures a feedback voltage greater than a preset value during a Right Normal Force output ON state.
Action Taken When the DTC Sets
| • | Both the Left and Right Normal Force outputs are set to default output states. |
| • | 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 On-Board diagnostic CLEAR RSS CODES feature can be used to clear the DTC. |
| • | The DTC is saved as history when the Electronic Suspension Control (ELC) module no longer sees a high feedback voltage during five (5) consecutive Right Normal Force output ON states. The DTC will clear if the fault does not return after 50 consecutive ignition cycles. |
Diagnostic Aids
Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Road Sensing Suspension Diagnostic System Check? | -- | Go to Step 2 | Go to Diagnostic System Check |
Test the Right Normal Force circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 6 | Go to Step 3 | |
3 |
Does the DTC reset? | -- | Go to Step 4 | Go to Step 5 |
4 |
Important: Perform the set up and calibration procedure for the Electronic Suspension Control (ELC) module. Replace the Electronic Suspension Control (ELC) module. Refer to Electronic Suspension Control Module Replacement . Did you complete the replacement? | -- | Go to Step 6 | -- |
5 | Replace the EBCM. Refer to Electronic Brake Control Module Replacement . Is the replacement complete? | -- | Go to Step 6 | -- |
6 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
