Code No.B2414 Unlock sensor fail


caution
  • If the diagnosis code No. B2414 is set, diagnose the CAN bus lines.
  • When replacing the ECU, always check that the communication circuit is normal.


















DIAGNOSTIC FUNCTION



JUDGMENT CRITERIA



PROBABLE CAUSES



  • Damaged wiring harness and connectors
  • Malfunctions of the unlock sensor
  • Malfunction of the KOS-ECU

DIAGNOSTIC PROCEDURE


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



Q. Is the check result normal?





STEP 2. Connector check: C-104 KOS-ECU connector, E-19 Unlock sensor (front door: LH), E-06 Unlock sensor (front door: RH)


Q. Is the check result normal?





STEP 3. Check the wiring harness between the C-104 KOS-ECU connector terminal Nos. 24 <LH drive vehicles>, 25 <RH drive vehicles>, 36 and the E-19 unlock sensor (front: LH) connector terminal Nos. 4, 2.



note Prior to the wiring harness inspection, check intermediate connector C-129 <LH drive vehicles>, C-114 <RH drive vehicles>, and repair if necessary.

Q. Is the check result normal?





STEP 4. Check the wiring harness between the C-104 KOS-ECU connector terminal Nos. 25 <LH drive vehicles>, 24 <RH drive vehicles>, 36 and the E-06 unlock sensor (front door: RH) connector terminal Nos. 4, 2.



note Prior to the wiring harness inspection, check intermediate connector C-114 <LH drive vehicles>, C-129 <RH drive vehicles>, and repair if necessary.

Q. Is the check result normal?





STEP 5. Replace the unlock sensor, and 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?