Curiosii for ever!: Car repair manuals for everyone.
Home >> Toyota >> 2012 >> Camry V6-3.5L (2GR-FE) >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> C Code Charts >> C1445

C1445





BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: C1439, C1445: Steering Angle Sensor Initialization Incomplete
C1445 - Vehicle Driven with Steering Angle Sensor not Initialized

DESCRIPTION

The skid control ECU acquires the steering angle sensor zero point every time the ignition switch is turned to ON and the vehicle is driven at 50 km/h (31 mph) or more for approximately 30 seconds. The ECU also stores previous zero points.





INSPECTION PROCEDURE

NOTICE:
Because this DTC is related to a temporary loss of steering angle zero point calibration, before proceeding with the inspection, it is useful to confirm whether the power source voltage was interrupted by an operation such as removal or disconnection of the battery.

HINT
* When U0073, U0123 and/or U0126 is output together with C1439 and/or C1445, inspect and repair the trouble areas indicated by U0073, U0123 and/or U0126 first Vehicle Stability Control System.
* When the speed sensor, yaw rate and acceleration sensor (for separate type) or yaw rate and acceleration sensor (airbag sensor assembly) (for built-in type) is malfunctioning, DTCs for the steering angle sensor may be stored even when the steering angle sensor is normal. When DTCs for the speed sensor, yaw rate and acceleration sensor (for separate type) or yaw rate and acceleration sensor (airbag sensor assembly) (for built-in type) are output together with DTCs for the steering angle sensor, inspect and repair the speed sensor, yaw rate and acceleration sensor (for separate type) and/or yaw rate and acceleration sensor (airbag sensor assembly) (for built-in type) first, and then inspect and repair the steering angle sensor.

PROCEDURE

1. CHECK DTC

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(b) Turn the ignition switch off.

(c) Turn the ignition switch to ON again and check that no CAN communication system DTCs are output Diagnosis System.

(d) 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 Reading and Clearing Diagnostic Trouble Codes.

Result:





HINT
* If there is a malfunction in the speed sensor, yaw rate and acceleration sensor (for separate type) or yaw rate and acceleration sensor (airbag sensor assembly) (for built-in type), 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 -- INSPECT CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting

C -- REPAIR CIRCUITS INDICATED BY OUTPUT DTCS Vehicle Stability Control System

D -- CHECK FOR INTERMITTENT PROBLEMS 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 50 km/h (31 mph) or more for at least 30 seconds.

(b) 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 -- ADJUST FRONT WHEEL ALIGNMENT OR STEERING Front Wheel Alignment
OK -- Continue to next step.

3. REPLACE STEERING ANGLE SENSOR

(a) Turn the ignition switch off.

(b) Replace the steering angle sensor Removal.

NEXT -- Continue to next step.

4. RECONFIRM DTC

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(b) Turn the ignition switch off.

(c) Start the engine.

(d) 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.

(e) Check if the same DTC is output Reading and Clearing Diagnostic Trouble Codes.

Result:





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 -- REPAIR CIRCUITS INDICATED BY OUTPUT DTCS Vehicle Stability Control System

A -- END
pro multis · Curiosii