C1283

DTC C1283 Yaw Rate & Lateral G Sensor-Signal

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 irregular or no signal of the yaw-rate & lateral G sensor.

C1283:

DTC Detecting Condition

Failsafe Function
The ESP function is inhibited, while the ABS and EBD controls allowed.
The ESP 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 terminal 3 and 4 of the yaw-rate& Lateral G sensor.
Specification: 4.75 - 5.25 Volts
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 output voltage between terminal 1 of the yaw-rate sensor connector and the body ground.
2) When the ignition switch is OFF, measure the output voltage between terminal 2 of the lateral G sensor connector and the body ground.
Specification: 2.25 - 2.75 Volts
Is the output 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&LATERAL G SENSOR
1) When the ignition switch is OFF, measure the output voltage between terminal 41 of the HECU connector and the body ground.
2) When the ignition switch is OFF, measure the output voltage between terminal 9 of the HECU connector and the body ground.
Specification: 2.25 - 2.75 Volts
Is the output voltage within the specification?
NO
- Repair harness and connector between the HECU and the yaw-rate & lateral G sensor.
YES
- Check output of yaw-rate & lateral G sensor when vehicle cornering

4. CHECK OUTPUT OF YAW-RATE& LATERAL G SENSOR WHEN VEHICLE CORNERING.
Check if any change of the voltage of the yaw-rate & lateral G sensor, when a vehicle is cornering. Is there any change of the voltage of the sensor?
NO
- Replace and recheck the yaw-rate & lateral G sensor.
YES
- After clearing the DTC and driving the vehicle at 40 Km/h speed or more, if the ESP lamp is ON and the same DTC shows again, replace the HECU and recheck.