Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this 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 CircuitDTC C0196 5A: Yaw Rate Circuit Plausibility Failure
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Yaw Rate Supply Voltage Circuit | C0196 00 | C0196 00 | -- | -- |
Yaw Rate CAN Bus High Circuit | C0196 00 | C0196 00 | C0196 00 | C0196 5A |
Yaw Rate CAN Bus Low Circuit | C0196 00 | C0196 00 | C0196 00 | C0196 5A |
Yaw Rate Ground Circuit | -- | C0196 00 | -- | -- |
Circuit/System Description
The lateral accelerometer and the yaw rate sensors are combined into one sensor external to the electronic brake control module (EBCM). The vehicle stability enhancement system (VSES) uses the lateral accelerometer input when calculating the desired yaw rate. The usable output signal is a serial data signal CAN high and CAN low serial data circuits.
Conditions for Running the DTC
The ignition switch is in the ON position.
Conditions for Setting the DTC
| • | The yaw/lateral combination sensor fails an internal self test. |
| • | Communication is lost between the EBCM and the yaw/lateral combination sensor. |
| • | The correlation error between the yaw/lateral combination sensor and steering angle sensor . |
Action Taken When the DTC Sets
One or more of the following actions may occur:
| • | The vehicle stability enhancement system (VSES) is disabled. |
| • | Traction control system (TCS) is disabled. |
| • | The TCS/VSES indicators turn ON. |
| • | The driver information center (DIC) displays the Service Traction Control, and or Service StabiliTrak message. |
Conditions for Clearing the DTC
| • | The condition for the DTC is no longer present. |
| • | The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles. |
Diagnostic Aids
Possible causes of this DTC are as follows:
| • | CAN HI and CAN LO circuits shorted together |
| • | CAN HI or CAN LO circuit shorted to ground |
| • | CAN HI or CAN LO circuit shorted to voltage |
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for Scan Tool Information
Circuit/System Verification
- Ignition ON, observe the scan tool Lateral Accelerometer Signal parameter. The reading should be 2.3-2.7 volts.
- Ignition ON, observe the scan tool Yaw Rate Sensor parameter. The reading should be 2.3-2.7 volts.
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the yaw rate/lateral accelerometer.
- Test for less than 2 ohms of resistance between the ground circuit terminal 1 and ground.
- Ignition ON, test for 11.8 - 12.2 volts between the 12-volt reference circuit terminal 4 and ground.
- Test for 5.5-7.0 volts between the CAN circuit terminal 3 and ground.
- Test for 5.5-7.0 volts between the CAN circuit terminal 2 and ground.
- Test for infinite ohm of resistance between the CAN circuit High, and Low terminals 2 and 3.
- If all circuits test normal, test or replace the yaw rate/lateral accelerometer sensor.
| ⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
| ⇒ | If less than the specified range, test the 12-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM. |
| ⇒ | If greater than the specified range, test the CAN circuit for a short to voltage. If the circuit tests normal, replace the EBCM. |
| ⇒ | If less than the specified range, test the CAN circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM. |
| ⇒ | If greater than the specified range, test the CAN circuit for a short to voltage. If the circuit tests normal, replace the EBCM. |
| ⇒ | If less than the specified range, test the CAN circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM. |
| ⇒ | If less than the specified range, test the CAN circuits for a shorted to each other. If the circuit tests 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
