Circuit Description
The Electronic Suspension Control (ELC) module provides power (a regulated 5 volts) to each of the CVRSS position sensors. The control module also monitors this voltage supply for a fault condition which prevents proper regulation.
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 position sensor supply voltage is outside the valid range of 3.75 to 5.625 volts.
Action Taken When the DTC Sets
| • | The Electronic Suspension Control (ELC) module will enter the Speed Dependent damping mode. |
| • | Both Left and Right Normal Force outputs will be set to the 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 position sensor supply voltage outside the valid range of 3.75 to 5.625 volts. 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.
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Determines if the fault is due to a short to ground.
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Determines if the fault is due to a short to voltage.
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Checks for a short to ground in the position sensor supply circuits.
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Checks for a short between the position sensor supply and ground circuits.
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Checks for a short to voltage in the position sensor supply circuits.
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 |
Does the voltage measure less than the specified value? | 3.75 V | Go to Step 4 | Go to Step 3 | |
Does the voltage measure greater than the specified value? | 5.625 V | Go to Step 6 | Go to Step 7 | |
Test the 5 V reference circuit of each position sensor for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 8 | Go to Step 5 | |
Test for a short between the 5 V reference circuit and the ground circuit of each position sensor. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 8 | Go to Step 7 | |
Test the 5 V reference circuit of each position sensor 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 8 | Go to Step 7 | |
7 |
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 8 | -- |
8 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
