Code No.B2507 Steering Angle Sensor Defective


caution
  • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, always diagnose the CAN bus lines.
  • Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

DIAGNOSTIC FUNCTION



PROBABLE CAUSES



  • Malfunction of the steering wheel sensor
  • Steering wheel sensor neutral position not learned
  • Malfunction of the AFS-ECU

DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III CAN bus diagnostics



Q. Is the check result normal?







STEP 2. M.U.T.-III other system diagnosis code



Q. Is the diagnosis code set?





STEP 3. Check whether the diagnosis code is reset.



(1)When the steering wheel sensor neutral position has been initialised, make the sensor learn the neutral point. Refer to GROUP 35C - On-vehicle service .
(2)Erase the diagnosis code.
(3)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(4)Check if diagnosis code is set.

Q. Is the diagnosis code set?





STEP 4. M.U.T.-III data list



    Turn the steering wheel.
Item No.
 Item name
 Normal condition
Item 5
 Steering angle (CAN input)
 The display on M.U.T.-III changes together with the steering wheel operation.
Item 7
 SAS status (CAN input)
 Normal
OK: Normal condition is displayed.

Q. Is the check result normal?





STEP 5. Check whether the diagnosis code is reset.



(1)Erase the diagnosis code.
(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(3)Check if diagnosis code is set.

Q. Is the diagnosis code set?