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DTC B2419: LF antenna open
 
 
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 sets the DTC B2419.
noteWhen the DTC B2419 is set, 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 KOS-ECU connector C-08 and each inside and outside transmission antenna assembly connector for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Are KOS-ECU connector C-08 and each inside and outside transmission antenna assembly connector in good condition?
Go to Step 2.
Repair or replace the damaged component(s). Refer to GROUP 00E, Harness Connector Inspection . Check that the inside outside transmission antenna assembly works normally.
 
STEP 2. Check the wiring harness between KOS-ECU connector C-08 and each inside and outside transmission antenna assembly connector.
Check the following wiring harnesses for short to power supply.
  • 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 (liftgate) connector terminal No. 1, 2
noteBefore the wiring harness inspection, inspect C-17, C-26, C-27 and G-20 intermediate connectors, and repair them if necessary.
Are the wiring harness between KOS-ECU connector C-08 and each inside and outside transmission antenna assembly connector in good condition?
Go to Step 3.
The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. Check that the inside outside transmission antenna assembly works normally.
 
STEP 3. Recheck for diagnostic trouble code.
(1) Erase the DTC.
(2) Turn the power supply mode of the engine switch from OFF to ON.
(3) Check if DTC is set.
(4) Turn the power supply mode of the engine switch to OFF.
Is the DTC set?
Replace KOS-ECU and register the ID codes (Refer to ).
The diagnosis is complete.