Diagnostic Instructions

DTC Descriptor

DTC C0187 5A: Lateral Acceleration Sensor Circuit Not Plausible

DTC C0196 5A: Yaw Rate Circuit Not Plausible

DTC C019B 5A: Yaw Rate Signal Not Plausible

DTC C0287 5A: Longitudinal Acceleration Sensor Circuit Not Plausible

DTC C0297 4A: Lost Communication With Yaw Rate Sensor

Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
12 V Reference	U0125, U0126	U0125, U0126	--	--
CAN Bus High Serial Data	U0073, U0074, U0100, U0101, U0104, U0125, U0126, U0128, U0136, U0139, U0140	U0073, U0074, U0100, U0101, U0104, U0125, U0126, U0128, U0136, U0139, U0140	U0073, U0074, U0100, U0101, U0104, U0125, U0126, U0128, U0136, U0139, U0140	C0187 5A, C0196 5A, C019B 5A, C0287 5A
CAN Bus Low Serial Data	U0073, U0074, U0100, U0101, U0104, U0125, U0126, U0128, U0136, U0139, U0140	U0073, U0074, U0100, U0101, U0104, U0125, U0126, U0128, U0136, U0139, U0140	U0073, U0074, U0100, U0101, U0104, U0125, U0126, U0128, U0136, U0139, U0140	C0187 5A, C0196 5A, C019B 5A, C0287 5A
Ground	--	U0125	--	--

Circuit/System Description

The yaw rate, lateral acceleration and longitudinal acceleration sensors are combined into one multi-axis sensor, external to the electronic brake control module (EBCM). The EBCM supplies a 12 V reference voltage to the multi-axis sensor. The multi-axis sensor communicates with the EBCM via the high speed controller area network (CAN) serial data circuit. The EBCM activates the stability control function depending on multi-axis sensor input.

Conditions for Running the DTC

Ignition ON

Conditions for Setting the DTC

C0187 5A

C0196 5A

C019B 5A

The yaw rate sensor signal is out of specified range.

C0287 5A

C0297 4A

A wrong multi-axis sensor is installed.

Action Taken When the DTC Sets

C0187 5A, C0196 5A, C019B 5A, and C0297 4A

C0287 5A

The EBCM disables the hill start assist for the duration of the ignition cycle.

Conditions for Clearing the DTC

Reference Information

Schematic Reference

Antilock Brake System Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

ABS 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 Acceleration Signal and Yaw Rate Sensor parameters. On a level surface, the readings should be 0 V.

If vehicle is equipped with hill start assist:

Observe the scan tool Acceleration Sensor Longitudinal Signal parameter. On a level surface, the reading should be 0 V.

Circuit/System Testing

1. Ignition ON, verify that DTC C0187 5A, C0196 5A, C019B 5A, and C0287 5A is not present.

⇒	If any listed DTC is present, perform the LINK X Yaw Rate Sensor Learn.

2. Ignition OFF, disconnect the harness connector at the B119 Yaw and Lateral Accelerometer Sensor.
3. Test for less than 5 Ω between the ground circuit terminal 6 and ground.

⇒	If greater than the specified value, test the ground circuit for an open/high resistance.

4. Ignition ON, test for greater than 11 V between the 12 V reference circuit terminal 5 and ground.

⇒	If less than the specified value, test the 12 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K17 Electronic Brake Control Module (EBCM).

5. If all circuits test normal, replace the B119 Yaw and Lateral Accelerometer Sensor and verify the DTC does not reset.

⇒	If the DTC resets, replace the K17 Electronic Brake Control Module (EBCM).

Repair Instructions