Code No.B2352 Antenna fail








DIAGNOSIS FUNCTION


If an open circuit or short to earth occurs in the antenna, KOS-ECU sets the diagnosis code No. B2352.

JUDGEMENT CRITERIA


When the ignition switch is turned ON, KOS-ECU sends signals to the receiver antenna module. The receiver antenna transmits random numbers to the emergency key when it receives signals from KOS-ECU. If an open circuit or short to earth occurs on the wiring harness between KOS-ECU and receiver antenna at this time, KOS-ECU determines that there is a problem.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. Connector check: C-34 receiver antenna module connector, C-104 KOS-ECU connector

Q. Is the check result normal?
Go to Step 2.
Repair the defective connector.

STEP 2. Check the wiring harness between the C-34 receiver antenna module connector terminal No. 1, 2 and the C-104 KOS-ECU connector terminal No. 11, 12.

  • Check the signal lines for open circuit and short circuit.

Q. Is the check result normal?
Go to Step 3.
Repair the wiring harness.

STEP 3. Replace the receiver antenna module, 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?
Replace KOS-ECU and register the ID codes (Refer to ).
The diagnosis is complete.