The slip rate error exceeds 0.5 g 60 times within one drive cycle.
Action Taken When the DTC Sets
- The EBCM disables the VSES for the duration of the ignition cycle.
- The DIC displays the Service Stabilitrak message.
- The ABS/TCS remains functional.
Conditions for Clearing the DTC
- The condition for the DTC is no longer present and the DTC is cleared with a scan tool.
- The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.
Diagnostic Aids
The following conditions can cause this concern
- Improper steering alignment.
- Open, short to ground, or short to voltage.
- Internal lateral accelerometer failure.
- EBCM internal failure.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
- 2: Tests for the proper voltage output on the 5-volt reference circuit and the proper operation of the signal circuit.
- 3: Tests for possible low 5-volt reference output or a problem with the signal circuit.
- 4: Tests for a short to voltage on the 5-volt reference circuit. If a short to voltage exists, other DTCs may be set for the vehicle stability system.
- 8: Tests for a problem with the low reference circuit. If a short to voltage exists, other DTCs may be set for the vehicle stability system.
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: ABS Schematics Connector End View Reference: ABS Connector End Views | ||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information | |
| 2 | Turn OFF the ignition. Disconnect the yaw and lateral acceleration sensor harness connector. Connect a 3-amp fused jumper wire between the 5-volt reference circuit of the yaw and lateral acceleration sensor and the signal circuit of the yaw and lateral acceleration sensor. Turn ON the ignition, with the engine OFF. With the scan tool, observe the yaw rate signal voltage. Does the scan tool indicate that the yaw rate signal parameter is in between the specified voltage range? | 4.5-5.5 V | Go to Step 8 | Go to Step 3 |
| 3 | With the 3-amp fused jumper wire still connected, does the scan tool indicate that the yaw rate sensor parameter is below the specified voltage value? | 4.5 V | Go to Step 5 | Go to Step 4 |
| 4 | Test the 5-volt reference circuit of the yaw and lateral acceleration 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 12 | Go to Step 7 | |
| 5 | Test the 5-volt reference circuit of the yaw and lateral acceleration sensor for the following conditions: An open A short to ground A high resistance Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 12 | Go to Step 6 | |
| 6 | Test the yaw rate signal circuit for the following conditions: An open A short to ground A high resistance Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 12 | Go to Step 11 | |
| 7 | Test the yaw rate signal circuit 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 12 | Go to Step 11 | |
| 8 | Test the low reference circuit of the yaw and lateral acceleration sensor for the following conditions: An open A short to voltage A high resistance Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 12 | Go to Step 9 | |
| 9 | Inspect for poor connections at the harness connector of the yaw and lateral acceleration sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 12 | Go to Step 10 | |
| 10 | Replace the yaw and lateral acceleration sensor. Refer to Yaw Rate Sensor/Lateral Accelerometer Replacement . Did you complete the replacement? | Go to Step 12 | ||
| 11 | Replace the electronic brake control module (EBCM). Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 12 | ||
| 12 | Clear the DTCs using the scan tool. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC reset? | Go to Step 2 | System OK | |
DTC C0186
Circuit Description
The longitudinal accelerometer is used to determine straight-line acceleration. This information is used when calculating the desired traction control in AWD applications.
DTC Descriptor
This diagnostic procedure supports the following DTC
DTC C0192 All Wheel Drive (AWD)/Four Wheel Drive (4WD) Reference Accelerometer Circuit
This vehicle has DTCs which include DTC Symptoms. For more information on DTC Symptoms, refer to DTC Symptom Description in Vehicle DTC Information.
| Symptom Type | Symptom Type Descriptor |
|---|---|
| 00 | No Additional Information |
| 1A | Bias Level Out of Range |
DTC C0192
Conditions for Running the DTC
- The ignition is ON.
- Ignition voltage is greater than 8 volts.