Circuit Description
The ESC module provides a common regulated power supply of about 8 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.
Conditions for Running the DTC
The ignition ON.
Conditions for Setting the DTC
| • | The ESC module senses position sensor supply voltage under 6 volts or over 9 volts. |
| • | The condition must be detected for 1 second in 4 consecutive ignition cycles. |
Action Taken When the DTC Sets
| • | Stores a DTC C0695 in the ESC memory. |
| • | Provides shock absorber solenoid control based only on the vehicle speed. |
| • | Sends a message to the IPC to display the SERVICE RIDE CONTROL message. |
Conditions for Clearing the DTC
| • | 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 (6-9 volts). |
| • | The IPC clearing DTCs feature |
| • | Using a scan tool |
Diagnostic Aids
| • | The following conditions may cause an intermittent malfunction to occur: |
| - | An intermittent short to ground is detected on any of the position sensor supply circuits. |
| - | An intermittent short to voltage is detected on any of the position sensor supply circuits. |
| • | The ESC module uses a common power supply in order to provide voltage to all of the position sensors. Therefore, a position sensor overcurrent code may be set if a malfunction is detected on any position sensor supply circuit. |
| • | The ESC module uses an ignition cycle counter diagnostic approach to set this DTC. This requires the ESC module to detect the malfunction 4 times before setting the DTC. To disable this feature, use a scan tool to clear all DTCs before preforming diagnostic procedures. |
| • | If any position sensor supply circuit is shorted to ground, the scan tool will indicate all of the position sensor voltage readings as zero. |
| • | If any position sensor is shorted to voltage, the position sensor will still function properly and the scan tool will display a valid position sensor voltage reading. |
| • | An intermittent DTC C0695 may produce a random firm/soft condition. |
Test Description
The numbers below refer to the step numbers on the diagnostic table.
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This tests the position sensor signal voltage range using a scan tool. The scan tool will display 0 volts for all position sensors if any position sensor 8 volt reference circuit is shorted to ground.
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This tests if any position sensor is shorted to ground.
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This tests determines which position sensor is shorted to ground.
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Tests for a short to ground in the position sensor 8 volt reference circuits.
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Tests for a short to voltage in the position sensor 8 volt reference circuits.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Suspension Controls Schematics | ||||
1 | Did you perform the RTD Diagnostic System Check? | -- | Go to Step 2 | |
Does the scan tool indicate that all four Position Sensor data parameters are within the specified range? | 0-0.2 V | Go to Step 3 | Go to Step 6 | |
Does the DTC reset? | -- | Go to Step 5 | Go to Step 4 | |
Reconnect each position sensor one at a time and observe if the DTC resets after each sensor is reconnected. Does the DTC reset? | -- | Go to Step 7 | System OK | |
Test the 8 volt reference circuit of all position sensors 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 9 | Go to Step 8 | |
Test the 8 volt reference circuit of all position sensors 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 9 | Go to Diagnostic Aids | |
7 | Replace the applicable position sensor. Refer to Electronic Suspension Front Position Sensor Replacement or Electronic Suspension Rear Position Sensor Replacement . Did you complete the replacement? | -- | Go to Step 9 | -- |
8 | Replace the ESC module. Refer to Electronic Suspension Control Module Replacement . Did you complete the replacement? | -- | Go to Step 9 | -- |
9 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
