C1282

DTC C1282 YAW RATE AND LATERAL G SENSOR - ELECTRICAL

GENERAL DESCRIPTION
The yaw-rate & Lateral G sensor is for the stability of a vehicle. The yaw-rate is to measure angular velocity while the Lateral G is to measure the force that makes a vehicle away from the center, when a vehicle cornering.

DTC DESCRIPTION
This code shows in case that there is an open or short in the circuit of the yaw-rate & lateral G sensor.

DTC Detecting Condition:

FAIL-SAFE FUNCTION
The ESC function is inhibited, while the ABS and EBD controls allowed.
The ESC warning lamp is ON, but the ABS and EBD warning lamps OFF.

INSPECTION PROCEDURE
1. CHECK POWER OF YAW-RATE & LATERAL G SENSOR
Disconnect the connector from the yaw-rate& Lateral G sensor, and measure the voltage between terminals 3 and 4 of the yaw-rate& Lateral G sensor.

Specification: 4.75 - 5.25 V

Is the voltage within the specification?

NO - Check harness and connector between the HECU and the yaw-rate & lateral G sensor.

YES - Check output of yaw-rate & lateral G sensor.

2. CHECK OUTPUT OF YAW-RATE & LATERAL G SENSOR
1. When the ignition switch is OFF, measure the voltage between terminal 1 of the yaw-rate sensor connector and the body ground.
2. When the ignition switch is OFF, measure the voltage between terminal 2 of the lateral G sensor connector and the body ground.

Specification: 2.25 - 2.75 V

Is the voltage within the specification?

NO - Check harness and connector of the yaw-rate & lateral G sensor. If no error on harness and connector, replace and recheck the yaw-rate & lateral G sensor.

YES - Check output voltage of HECU connector for yaw-rate & lateral G sensor.

3. CHECK OUTPUT VOLTAGE OF HECU CONNECTOR FOR YAW-RATE G SENSOR
1. When the ignition switch is OFF, measure the output voltage between terminal 41 of the HECU connector and the ground..
2. When the ignition switch is OFF, measure the output voltage between terminal 9 of the HECU connector and the ground.

Specification: 2.25 - 2.75 V

Is the output voltage within the specification?

YES - Repair harness and connector between the HECU and the yaw-rate & lateral G sensor.

NO - After clearing the DTC and driving the vehicle at 40 km/h speed or more, if the ESC lamp is ON and the same DTC shows again, replace the HECU and recheck.