Toyota Sienna Service Manual: Steering Angle Sensor Circuit Malfunction
DTC C1231/31 Steering Angle Sensor Circuit Malfunction
The steering angle sensor signal is sent to the skid control ECU through the CAN communication system.
When there is a malfunction in the communication, it will be detected by the diagnosis function.
- When U0073/94, U0100/65, U0123/62, U0124/95 or U0126/63 are output accompanied with C1231/ 31, inspect and repair the trouble areas indicated by U0073/94, U0100/65, U0123/62, U0124/95 or U0126/63 first.
- When the speed sensor or the yaw rate sensor has trouble. DTCs for the steering angle sensor may be output even when the steering angle sensor is normal. When DTCs for the speed sensor or yaw rate sensor are output accompanied with other DTCs for the steering angle sensor, inspect and repair the speed sensor and yaw rate sensor first, and the n inspect and repair the steering angle sensor.
1 INSPECT STEERING ANGLE SENSOR
(a) Remove the steering wheel and the column lower cover.
(b) Disconnect the steering angle sensor connector.
(c) Turn the ignition switch to the ON position.
(d) Measure the voltage according to the value(s) in the table below.
(e) Measure the voltage according to the value(s) in the table below.
REPLACE STEERING ANGLE SENSOR
SM Solenoid CircuitDTC C1225/25 SM Solenoid Circuit DESCRIPTION This solenoid turns on when receiving signals the ECU and controls the pressure acting on the wheel cylinders to control the braking force. WIRIN ...
Stuck in Deceleration SensorDESCRIPTION The yaw rate sensor and deceleration sensor signal is sent to the skid control ECU through the CAN communication system. When there is a malfunction in the communication, it will ...
A/C ECU Communication Stop
DTC B1262 A/C ECU Communication Stop DESCRIPTION DTC B1262 is output when communication between the A/C amplifier and the multiplex network gateway ECU stops for more than 10 seconds. DTC No. DTC Detection Condition Trouble Area B1262 A/C ECU communicat ...
Bluetooth tel check mode
HINT: Illustration may differ from the actual vehicle depending on the device settings and options. Therefore, some detailed area may not be shown exactly the same as on the actual vehicle. 1. ENTER DIAGNOSTIC MODE 2.