1.
CHECK INSTALLING OF STEERING ANGLE SENSOR
Check if the steering angle sensor is properly installed.
Is the installing proper?
▶ Reinstall the steering angle sensor properly.
▶ Check power of steering angle sensor
Steering angle sensor is a plate between the photo-controller LED and the photo transistor. As the plate rotates with steering wheel rotation, electrical signal will be generated depending on whether the LED light passes through the plate to the photo-transistor or not. The signal is the steering wheel operation angular velocity and used to detect the steering wheel turning direction.
This code shows in case that there is an irregular or no signal of the steering angle sensor.
DTC No. | Detecting Condition | Possible Cause |
C1260 | 1. When the steering wheel is turned more than 36 degrees, if neutral signal is maintained ECU detects the failure. 2. When the steering wheel is turned more than 364 degrees, if neutral signal is not detected, ECU detects the failure. 3.When the steering wheel angle is larger than 700 degrees ECU detects the failure. 4.During straight driving, if the steering wheel angle is larger than predefined degree ECU detects the failure. 5. When the vehicle speed is higher than 15km/H and reference steering wheel angle is larger than ±15 degrees, if there is no variation of the steering wheel angle for predefined time ECU detect the failure. | - Open/short in circuit of steering angle sensor - Faulty steering angle sensor - Faulty installing of steering angle sensor - Faulty HECU |
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.
CHECK INSTALLING OF STEERING ANGLE SENSOR
Check if the steering angle sensor is properly installed.
Is the installing proper?
▶ Reinstall the steering angle sensor properly.
▶ Check power of steering angle sensor
CHECK POWER OF STEERING ANGLE SENSOR
Disconnect the steering angle sensor connector, and measure the voltage between terminal 2 and 3 of the steering angle sensor connector.
Specification : 9~16 V
Is the voltage within the specification?
▶ Check harness and connector between the HECU and the steering angle sensor.
▶ Check output signal of steering angle sensor
CHECK OUTPUT SIGNAL OF STEERING ANGLE SENSOR
Check if both ST1 and ST2 alternate High and Low signal, rotating the wheel.
Check if STN has Low signal, rotating the wheel at 360 degree in one direction.
Is the signal of the steering angle sensor normal?
▶ Check harness and connector of the steering angle sensor. If no error on the harness and the connector, replace the steering angle sensor and recheck.
▶ After clearing the DTC and driving the vehicle at 40Km/h speed or more, if the ESP lamp is ON and the same DTC shows again, replace the HECU and recheck.
