Code No.B2419 LF antenna voltage short


caution When replacing the ECU, always check that the communication circuit is normal.

DIAGNOSTIC FUNCTION



note When the diagnosis code No.B2419 is set, KOS-ECU does not perform the certification with the keyless operation key.

JUDGMENT CRITERIA



PROBABLE CAUSES



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

DIAGNOSIS PROCEDURE


STEP 1. Connector check: C-08 KOS-ECU connector, each inside and outside transmission antenna assembly connector


Q. Is the check result normal?





STEP 2. Check the wiring harness between KOS-ECU connector and each inside and outside transmission antenna assembly connector.




  • Wiring harness between C-08 KOS-ECU connector terminal No. 32, 44 and D-26 outside transmission antenna assembly (driver’s side) connector terminal No. 1, 5
  • Wiring harness between C-08 KOS-ECU connector terminal No. 30, 42 and D-05 outside transmission antenna assembly (passenger’s side) connector terminal No. 1, 5
  • Wiring harness between C-08 KOS-ECU connector terminal No. 31, 43 and C-19 inside transmission antenna assembly (front) connector terminal No. 1, 5
  • Wiring harness between C-08 KOS-ECU connector terminal No. 29, 41 and D-10 inside transmission antenna assembly (rear) connector terminal No. 1, 5
  • Wiring harness between C-08 KOS-ECU connector terminal No. 28, 40 and G-13 outside transmission antenna assembly (tailgate) connector terminal No. 1, 2
note Before the wiring harness inspection, inspect C-17, C-26, C-27 and G-20 intermediate connectors, and repair them if necessary.

Q. Is the check result normal?





STEP 3. Check whether the diagnosis code is reset.


(1)Erase the diagnosis code.
(2)Turn the power supply mode of the engine switch from OFF to ON.
(3)Check if the diagnosis code is set.

Q. Is the diagnosis code set?