Circuit Description
The electronic brake control module (EBCM) monitors the yaw rate of the vehicle for vehicle stability enhancement system operation.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0371 Yaw Rate Sensor Performance
Conditions for Running the DTC
DTC C0371 can be set anytime the ignition is in the ON position.
Conditions for Setting the DTC
The EBCM detects malfunction in the deceleration sensor.
Action Taken When the DTC Sets
| • | The ABS is disabled. |
| • | The ABS warning indicator turns ON. |
| • | The traction control and vehicle stability control (VSC) is disabled. |
| • | The VSC warning indicator turns ON. |
Conditions for Clearing the DTC
The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
Diagnostic Aids
Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction.
The following are possible causes of the malfunction:
| • | An open or high resistance in the deceleration voltage circuit |
| • | An open or high resistance in the deceleration sensor ground circuit |
| • | A deceleration sensor malfunction |
If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections .
Test Description
The number below refers to the step number on the diagnostic table.
Step | Action | Value(s) | Yes | No | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Antilock Brake System Schematics Connector End View Reference: Antilock Brake System Connector End Views | ||||||||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |||||||
2 | Is U0073, U0123, U0124, or U0126 also set? | -- | Go to Step 3 | |||||||
3 |
Is the voltage within the specified range? | 10-14 V | Go to Step 4 | Go to Step 5 | ||||||
Test the yaw rate sensor ground circuits of the electronic brake control module (EBCM) for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 7 | Go to Step 6 | |||||||
5 | Locate and repair the following in ignition positive voltage circuit of deceleration sensor.
Did you find and correct the condition? | -- | Go to Step 7 | -- | ||||||
6 | Replace the yaw rate sensor. Refer to Vehicle Yaw Sensor Replacement . Did you complete the replacement? | -- | Go to Step 7 | -- | ||||||
7 |
Does the DTC reset? | -- | Go to Step 2 | System OK | ||||||
