• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Left Rear Strut Position Sensor Low Reference Circuit | -- | C0625 08 | -- | -- |
Left Rear Strut Position Sensor 5-Volt Voltage Reference Circuit | C0696 | C0625 08 | C0696 | -- |
Left Rear Strut Position Sensor Signal Circuit | C0625 08 | C0625 08 | C0625 08 | C0625 55 |
Right Rear Strut Position Sensor Low Reference Circuit | -- | C0630 08 | -- | -- |
Right Rear Strut Position Sensor 5-Volt Voltage Reference Circuit | C0696 | C0630 08 | C0696 | -- |
Right Rear Strut Position Sensor Signal Circuit | C0630 08 | C0630 08 | C0630 08 | C0630 55 |
The electronic suspension control (ESC) module provides a common regulated reference voltage of approximately 5 volts to all of the position sensors. The ESC module monitors this power supply for a malfunction that could prevent it from correctly regulating the supply voltage.
• | Battery voltage is between 9-16 volts. |
• | Ignition is ON. |
• | The ESC module senses suspension position sensor supply voltage under 4.75 volts or over 5.25 volts. |
• | The condition is detected for 1 second in 4 consecutive ignition cycles. |
• | Commands speed dependent damping system and normal force signals to the default state. |
• | The ESC sends a message to the instrument panel cluster (IPC) to display SERVICE SUSPENSION SYSTEM message. |
• | A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present. |
• | The ESC module senses the correct sensor supply voltage. |
• | The IPC clearing DTC feature. |
Electronic Suspension Control Schematics
Electronic Suspension Control Description and Operation
• | Circuit Testing |
• | Wiring Repairs |
Control Module References for Scan Tool Information
Ignition ON, observe the scan tool position sensor data parameter. The reading should be between 4.75-5.25 volts.
⇒ | If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If all circuits test normal, replace the ESC module. |
⇒ | If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the ESC module. |
⇒ | If the voltage is out of the range when one of the sensors are connected, test or replace the suspect suspension position sensor. |
⇒ | If not within the specified range or if it is erratic, replace the applicable suspension position sensor. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for ESC module replacement, setup, and programming |