Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using the diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptors
DTC C0196 00: Yaw Rate Circuit No Additional InformationDTC C0196 28: Yaw Rate Circuit Incorrect Frequency
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Yaw Rate Sensor Signal | C0196 00 | C0196 00 | C0196 00 | -- |
Low Reference | C0196 00 | C0196 00 | C0196 00 | -- |
Yaw Rate Frequency Signal | C0196 28 | C0196 28 | C0196 28 | C0196 28 |
Circuit/System Description
The electronic brake control module (EBCM) supplies 5 V to the yaw-rate sensor assembly reference circuit and a ground through the yaw-rate sensor low reference circuit, which is shared with the steering angle sensor. The EBCM, yaw-rate sensor assembly and steering angle sensor share a common 12 V supply voltage circuit.
The yaw-rate sensor produces signal output voltage that corresponds to the vehicle rotation around its vertical axis.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The EBCM detects a fault in the yaw-rate signal voltage output
Action Taken When the DTC Sets
| • | The EBCM disables ESP for the duration of the ignition cycle. |
| • | The ABS warning lamp, the ABS warning icon and the Trac-Off icon activates. |
Conditions for Clearing the DTC
| • | The condition for setting the DTC is no longer present. |
| • | 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. |
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Electrical Information Reference
Scan Tool Reference
Circuit/System Verification
With scan tool installed, clear the DTCs then drive the vehicle in a straight line at a speed greater than 15 km/h (9 mph). If the DTC did not set as a current DTC see diagnostic aids.
Circuit/System Testing
- Ignition OFF, disconnect the yaw-rate/lateral accelerometer connector.
- Test the yaw-rate/lateral sensor reference voltage circuit for a short to voltage, short to ground, an open or high resistance.
- Test the yaw/lateral sensor ground circuit for an open or high resistance.
- Test the yaw/lateral sensor CAN HI and LO circuit for a short to voltage, short to ground, an open or high resistance.
- Ignition ON, test the yaw/lateral sensor reference voltage circuit for 5 volts, and the ground circuit for an open or high resistance.
| ⇒ | If the reference voltage circuit did not test normal, repair the circuit. |
| ⇒ | If the reference ground circuit did not tests normal, repair the circuit. |
| ⇒ | If the yaw/lateral CAN HI and LO circuits did not test normal repair the circuit. |
| ⇒ | If the yaw/lateral 5 volt reference and ground circuits test normal replace the yaw/lateral sensor. |
| ⇒ | If the yaw/lateral 5 volt reference and ground circuits did not test normal replace the EBCM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for EBCM replacement, setup, and programming |
