Circuit Description
The electronic suspension control (ESC) module provides a regulated 5 volts to each of the position sensors. The ESC module also monitors this voltage supply for a fault condition which prevents proper regulation.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0696 Position Sensor Overcurrent (5-volt supply)
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
| • | The position sensor supply voltage is outside the valid range of 3.75-5.625 volts. |
| • | The fault is detected for 1 second or more during 3 consecutive ignition cycles, or during the same ignition cycle after clearing the DTC with a scan tool. |
Action Taken When the DTC Sets
| • | The ESC 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 SUSPENSION SYS message will be displayed. |
Conditions for Clearing the MIL/DTC
| • | The scan tool can be used to clear the DTC. |
| • | The DTC is saved as history when the ESC module no longer sees a position sensor supply voltage outside the valid range of 3.75-5.625 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 numbers below refer to the step numbers on the diagnostic table.
-
Determines if the fault is due to a short to ground.
-
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.
-
Checks for a short between the position sensor supply and ground circuits.
-
Checks for a short to voltage in the position sensor supply circuits.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Suspension Controls Schematics | ||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
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-volt 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-volt 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-volt 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 | Replace the ESC module. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | -- | Go to Step 8 | -- |
8 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
