DTC C1231/31 Steering Angle Sensor Circuit Malfunction |
for Preparation Click here
DESCRIPTION
The steering angle sensor signal is sent to the skid control ECU via the CAN communication system. When there is a malfunction in the CAN communication system, it will be detected by the diagnostic function.DTC Code | DTC Detection Condition | Trouble Area |
C1231/31 | When any of following conditions detected:
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- HINT:
- DTC C1231/31 is cleared automatically when the ignition switch is turned from off to ON after the voltage supply to the steering angle sensor returns to normal.
WIRING DIAGRAM
INSPECTION PROCEDURE
- HINT:
- When U0073/94, U0123/62, U0124/69 or U0126/63 is output together with C1231/31, inspect and repair the trouble areas indicated by U0073/94, U0123/62, U0124/69 or U0126/63 first.
- NOTICE:
- When replacing the VSC actuator assembly, perform zero point calibration (Click here).
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.PERFORM INITIALIZATION OF STEERING ANGLE SENSOR |
Check that the steering wheel is in the centered position.
Disconnect the negative battery terminal for more than 2 seconds.
- NOTICE:
- After the ignition switch is turned off, the navigation system requires approximately 90 seconds to record various types of memory and settings. As a result, after turning the ignition switch off, wait 90 seconds or more before disconnecting the cable from the negative (-) battery terminal.
Reconnect the negative battery terminal.
After driving the vehicle straight ahead at 15 km/h (9.3 mph) or more for a few seconds, drive the vehicle at a speed of 45 km/h (28 mph) or more and turn the steering wheel to the right and left for several seconds.
NEXT | |
2.READ VALUE USING TECHSTREAM (STEERING ANGLE SENSOR) |
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream ON.
Check that the steering wheel is centered.
Select the Data List mode on the Techstream.
Techstream
ABS/VSC/TRAC Tester Display Measurement Item/Range Normal Condition Diagnostic Note Steering Angle Sensor Steering angle sensor /
min.: -3276.8°, max.: 3276.7°Left turn: Increase
Right turn: Decrease- Steering Angle Value Steering angle value /
min.: -3276.8°, max.: 3276.7°- -
Check that the steering wheel turning angle of the steering angle sensor changes when turning the steering wheel.
- OK:
- Turning the steering wheel to the left: Value increases
Turning the steering wheel to the right: Value decreases
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OK | |
3.RECONFIRM DTC |
Clear the DTC (Click here).
Start the engine.
After driving the vehicle straight ahead at 15 km/h (9.3 mph) or more for a few seconds, drive the vehicle at a speed of 45 km/h (28 mph) or more and turn the steering wheel to the right and left for several seconds.
Check if the same DTC is recorded (Click here).
Result Result Proceed to DTC is output A DTC is not output B
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A | ||
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4.CHECK CAN COMMUNICATION SYSTEM |
Check if the CAN communication system DTC is output (Click here).
Result Result Proceed to DTC is not output A DTC is output B
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A | |
5.CHECK STEERING ANGLE SENSOR |
Check that the steering angle sensor has been installed correctly (Click here).
- OK:
- The sensor is installed correctly.
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OK | |
6.CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR - BATTERY AND BODY GROUND) |
Remove the steering wheel and the column cover lower.
Disconnect the steering angle sensor connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition J6-1(IG) - Body ground Ignition switch ON 11 to 14 V J6-3 (BAT) - Body ground Always
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition J6-2 (ESS) - Body ground Always Below 1 Ω
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OK | |
7.REPLACE STEERING ANGLE SENSOR |
Replace the steering angle sensor (Click here).
NEXT | |
8.RECONFIRM DTC |
Clear the DTC (Click here).
Start the engine.
Drive the vehicle at a speed of 45 km/h (28 mph) or more and turn the steering wheel to the right and left for several seconds.
Check if the same DTC is recorded (Click here).
Result Result Proceed to DTC is output A DTC is not output B
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A | ||
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