Code No.B2507 Steering angle sensor defective


caution
  • Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

DIAGNOSTIC FUNCTION



JUDGEMENT CRITERIA



PROBABLE CAUSES



  • Neutral position of steering wheel sensor not learned
  • Steering wheel sensor malfunction
  • Malfunction of the LDW-ECU
  • Malfunction of the CAN bus line.

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)Perform calibration of steering wheel sensor (Refer to ).
(2)Erase the diagnosis code.
(3)Turn the ignition switch from the LOCK (OFF) position to the ON position.
(4)Check if the diagnosis code is set.

Q. Is the diagnosis code set?





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




  • When the steering wheel sensor neutral point is learned.
Item No.
 Item name
 Normal condition
Item 12
 Steering angle sensor status
 Normal

  • Vehicle stopped (the steering wheel is in the neutral position)
Item No.
 Item name
 Normal condition
Item 13
 Steering angle
 -6 to 6 deg

  • Running
Item No.
 Item name
 Normal condition
Item 13
 Steering angle
 Nearly the same as the steering wheel operation angle <-720 to 720 deg (LDW-ECU normal detection value)>
OK: Normal conditions are displayed for all the items.

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 the LOCK (OFF) position to the ON position.
(3)Check if the diagnosis code is set.

Q. Is the diagnosis code set?