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Toyota Tacoma 2015-2018 Brake Workshop Manual

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Last Modified: 11-13-2015 6.6 C Doc ID: RM000000ZRR0HVX
Model Year Start: 2016 Model: Tacoma Prod Date Range: [08/2015 - ]
Title: BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (for Hydraulic Brake Booster): C1290; Steering
Angle Sensor Zero Point Malfunction; 2016 MY Tacoma [08/2015 - ]
DTC C1290 Steering Angle Sensor Zero Point Malfunction
DESCRIPTION
The skid control ECU (master cylinder solenoid) acquires steering angle sensor zero point every time the ignition
switch is turned to ON and the vehicle is driven at 35 km/h (22 mph) or more for approximately 5 seconds. The
ECU also stores the previous zero point.
If the front wheel alignment or steering wheel position is adjusted without disconnecting the cable from the
negative (-) battery terminal, or if the yaw rate and acceleration sensor zero point is not acquired after the
adjustments have been completed, the skid control ECU (master cylinder solenoid) detects the difference
between the previous zero point and newly acquired zero point and stores this DTC to indicate poor adjustment.
The steering angle sensor zero point malfunction warning is canceled by turning the ignition switch off.
DTC
CODE
DTC DETECTION CONDITION TROUBLE AREA
C1290
The steering angle sensor zero point calibration
position vastly differs from the recorded value.
Yaw rate and acceleration sensor zero
point calibration incomplete
Poor adjustment of centered position
of steering wheel
Poor adjustment of front wheel
alignment
INSPECTION PROCEDURE
PROCEDURE
1. PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR
(a) Perform zero point calibration of the yaw rate and acceleration sensor .
HINT:
When the stored zero point of the yaw rate and acceleration sensor is cleared, steering angle sensor zero
point is also cleared.
If the zero point and output value of the yaw rate and acceleration sensor and the output value of the
speed sensors are not normal, steering angle sensor zero point cannot be acquired normally even if the
vehicle is driven straight ahead at 35 km/h (22 mph) or more.
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