When replacing the ECU, always
check that the communication circuit is normal.
DIAGNOSTIC FUNCTION
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 diagnosis code No.B2419.
note
When the diagnosis code No.B2419 is set, KOS-ECU does not perform the certification with
the keyless operation key.
JUDGMENT CRITERIA
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.
PROBABLE CAUSES
Damaged wiring harness and connectors
Malfunction of the KOS-ECU
DIAGNOSIS PROCEDURE
STEP 1. Check the wiring harness 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 earth, 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 earth, 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 earth, 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 earth, 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 earth, and open circuit in EGTP, EGTG line
between KOS-ECU connector and outside transmission antenna assembly (tailgate) connector
Q.
Is the check result normal?
Go to Step 2
Repair the connectors or wiring harness.
STEP 2. 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?
Replace KOS-ECU and register the ID codes (Refer to ).
Repair the connectors or wiring harness.
).