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DTC B2419: LF antenna voltage short
 
 
cautionWhen replacing the ECU, always check that the communication circuit is normal.
 
 
DTC SET CONDITION
When a short to power supply is detected in the wiring harness in between the inside and outside transmission antenna assembly, KOS-ECU stores DTC B2419.
noteWhen DTC B2419 is stored, KOS-ECU does not perform the certification with the keyless operation key.
 
 
TECHNICAL DESCRIPTION (COMMENT)
When an abnormality is found with the wiring harness in between the inside and outside transmission antenna assembly, KOS-ECU determines that a problem has occurred.
 
 
TROUBLESHOOTING HINTS
  • Damaged wiring harness and connectors
  • Malfunction of the KOS-ECU
 
 
DIAGNOSIS
STEP 1. Check of short to power supply, short to ground, and open circuit in line between KOS-ECU connector and each inside and outside transmission antenna assembly connector.
Check the following wiring harnesses for short to power supply.
  • Check of short to power supply, short to ground, and open circuit in EDRP, EDRG line between KOS-ECU connector and outside transmission antenna assembly (driver’s side) connector
  • Check of short to power supply, short to ground, and open circuit in EASP, EASG line between KOS-ECU connector and outside transmission antenna assembly (passenger’s side) connector
  • Check of short to power supply, short to ground, and open circuit in INFP, INFG line between KOS-ECU connector and inside transmission antenna assembly (front) connector
  • Check of short to power supply, short to ground, and open circuit in INRP, INRG line between KOS-ECU connector and inside transmission antenna assembly (rear) connector
  • Check of short to power supply, short to ground, and open circuit in EGTP, EGTG line between KOS-ECU connector and outside transmission antenna assembly (liftgate) connector
Is the check result normal?
Go to Step 2.
Repair the connector(s) or wiring harness.
 
STEP 2. Check whether the diagnosis trouble code is stored again.
(1) Erase the DTC.
(2) Turn the power supply mode of the engine switch from OFF to ON.
(3) Check if the DTC is stored.
Is the DTC stored?
Replace KOS-ECU and register the ID codes (Refer to ).
The diagnosis is complete.