Toyota Tacoma 2015-2018 Service Manual: Steering Angle Sensor Zero Point Malfunction (C1290)
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. |
|
PROCEDURE
|
1. |
PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR |
(a) Perform zero point calibration of the yaw rate and acceleration sensor (See
page .gif)
).
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.
|
.gif)
|
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 abnormal centered position of the steering wheel, acquire the yaw rate and acceleration sensor zero point again after the adjustments are completed.
OK:
The centered position of the steering wheel is correctly set.
| OK | .gif) |
END |
| NG | |
ADJUST FRONT WHEEL ALIGNMENT OR STEERING POSITION |
Center Differential Lock Position Switch (C1282)
DESCRIPTION
DTC C1282 is stored only in test mode.
DTC Code
DTC Detection Condition
Trouble Area
C1282
Stored during test mode.
...
Diameter of the Tire is not Uniform (C1337)
DESCRIPTION
The skid control ECU (master cylinder solenoid) measures the speed of each wheel
by receiving signals from the speed sensors. These signals are used for recognizing
whether all 4 whee ...
Other materials:
Data List / Active Test
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any parts. This non-intrusive
inspection can be very useful because intermittent conditions or signals ...
Installation
INSTALLATION
PROCEDURE
1. INSTALL FRONT BUMPER ASSEMBLY
(a) w/ Fog Light:
(1) Connect the 2 connectors.
(b) Engage the 3 claws and guide to install the front bumper assembly.
(c) Remove the protective tape.
(d) Install the 6 clips.
(e) Engage the clamp.
(f) Connect the connector.
(g) Insta ...
Installation
INSTALLATION
PROCEDURE
1. INSTALL ROOF HEADLINING ASSEMBLY
(a) Insert the roof headlining assembly into the vehicle from the door.
NOTICE:
Check that the corners of the roof headlining assembly are not
folded, twisted or otherwise deformed and that none of the ...