Clearing Diagnostic Trouble Codes.
(b) Turn the engine switch off.
(c) Turn the engine switch on (IG) again and check that no CAN communication system DTCs are output See: Powertrain
Management/Computers and Control Systems/Information Bus/Testing and Inspection/Initial Inspection and Diagnostic
Overview/CAN Communication System/Diagnosis System.
(d) Drive the vehicle and turn the steering wheel to the right and left at a speed of 35 km/h (22 mph) and check that no speed sensor and
yaw rate and acceleration sensor DTCs are output See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes.
Result:
HINT
- If there is a malfunction in the speed sensor or the yaw rate and acceleration sensor, an abnormal value may be output
although the steering angle sensor is normal.
- If the speed sensor and the yaw rate and acceleration sensor DTCs are output simultaneously, repair the sensors and inspect
the steering angle sensor.
- If the same 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 when the power source voltage drops.
D -- CHECK FOR INTERMITTENT PROBLEMS See: Accessories and Optional Equipment/Antitheft and Alarm
Systems/Diagrams/Diagnostic Aids/How To Troubleshoot ECU Controlled Systems/How To Proceed With Troubleshooting
C -- REPAIR CIRCUIT INDICATED BY OUTPUT DTC See: Diagnostic Trouble Code Descriptions/Vehicle Stability Control
System
B -- INSPECT CAN COMMUNICATION SYSTEM See: Powertrain Management/Computers and Control Systems/Information
Bus/Testing and Inspection/Initial Inspection and Diagnostic Overview/CAN Communication System/How to Proceed With
Troubleshooting
A -- Continue to next step.
2. CHECK STEERING ANGLE SENSOR ZERO POINT CALIBRATION
(a) Drive the vehicle straight ahead at 35 km/h (22 mph) or more for at least 5 seconds.
(b) Check that the centered position of the steering wheel is correctly set while driving straight ahead.
HINT
If the front wheel alignment and steering position are adjusted as a result of an off-centered position of the steering wheel, acquire
yaw rate and acceleration sensor zero point again after the adjustments are completed.
OK:
The steering wheel is centered correctly.
NG -- ADJUST FRONT WHEEL ALIGNMENT OR STEERING POSITION See: Maintenance/Alignment/Service and
Repair/Front Wheel Alignment
OK -- Continue to next step.
3. RECONFIRM DTC
(a) Turn the engine switch off.
(b) Clear the DTCs See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Testing and Inspection/Reading and
Clearing Diagnostic Trouble Codes.
(c) Start the engine.
(d) Drive the vehicle and turn the steering wheel to the right and left at the speed of 35 km/h (22 mph) or more.
(e) Check if the same DTC is recorded See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes.
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