DTC C1439: Steering Angle Sensor Initialization Incomplete; DTC C1445: Vehicle Driven with Steering Angle Sensor not Initialized [08/2015 - ]: Procedure

1. Clear the DTCs. Refer to DTC CHECK / CLEAR [08/2015 - ] .
2. Turn the ignition switch off.
3. Turn the ignition switch to ON again and check that no CAN communication system DTCs are output. Refer to DIAGNOSIS SYSTEM [08/2015 - ] .
4. Drive the vehicle at a speed of 50 km/h (31 mph) and turn the steering wheel to the right and left and check that no speed sensor or yaw rate and acceleration sensor DTCs are output. Refer to DTC CHECK / CLEAR [08/2015 - ] .

   Result

   Result	Proceed to
   DTCs C1439 and/or C1445 are output.	A
   CAN communication system DTC is output.	B
   Speed sensor and/or yaw rate and acceleration sensor DTC is output.	C
   DTCs C1439 and C1445 are not output.	D

   HINT: 

   • If there is a malfunction in the speed sensor or yaw rate and acceleration sensor (airbag sensor assembly), an abnormal value may be output although the steering angle sensor is normal.
   • If speed sensor and yaw rate and acceleration sensor DTCs are output simultaneously, repair these malfunctions and then inspect the steering angle sensor.
   • If DTC C1439 and/or C1445 is not output again, the DTC may have been stored due to a temporary loss of steering angle zero point calibration, such as a loss of calibration due to the power source voltage being low.

B → See step   6 

C → See step   7 

D → See step   5 

A: Go to next step 

1. Drive the vehicle straight ahead at 50 km/h (31 mph) or more for at least 30 seconds.
2. Check that the steering wheel is correctly centered while driving straight ahead.

   HINT: 

   If front wheel alignment and steering are adjusted as a result of an off-center steering wheel, acquire the yaw rate and acceleration sensor zero point again after the adjustments are completed.

   OK

   The steering wheel is correctly centered.

NG → See step   8 

OK: Go to next step 

1. Turn the ignition switch off.
2. Replace the steering angle sensor. Refer to REMOVAL [08/2015 - ] .

NEXT: Go to next step 

1. Clear the DTCs. Refer to DTC CHECK / CLEAR [08/2015 - ] .
2. Turn the ignition switch off.
3. Start the engine.
4. Drive the vehicle at a speed of 50 km/h (31 mph) or more for at least 120 seconds and turn the steering wheel to the right and left.
5. Check if the same DTC is output. Refer to DTC CHECK / CLEAR [08/2015 - ] .

   Result

   Result	Proceed to
   DTCs C1439 and C1445 are not output.	A
   Yaw rate and acceleration sensor DTC is output.	B

   HINT: 

   If DTC C1439 and/or C1445 is not output again, the DTC may have been stored due to a temporary loss of the steering angle zero point calibration, such as a loss of calibration due to the power source voltage being low.

B → See step   7 

A → END