Code No.B240C Tail gate antenna(outdoor) open


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










DIAGNOSTIC FUNCTION


If an open circuit is detected in the outside transmission antenna assembly (trunk lid), the diagnosis code is set.

JUDGMENT CRITERIA


When the ignition push switch is pressed, or when the antenna open circuit detection request is received from the diagnosis function, the failure is detected.

PROBABLE CAUSES



DIAGNOSTIC PROCEDURE


STEP 1. Connector check: F-17 Outside transmission antenna assembly (trunk lid) connector, C-23 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 F-17 outside transmission antenna assembly (trunk lid) connector terminal No. 1, 2, 3 and the C-23 KOS-ECU connector terminal No, 6, 19, 40.


Check the communication, power supply, and earth wires for open circuit.
note Prior to the wiring harness inspection, check C-16, C-28 and D-16 intermediate connectors, and repair them if necessary.

Q. Is the check result normal?

Go to Step 3.

Repair the wiring harness.

STEP 3. Keyless operation system communication test


Check that the communication with the outside transmission antenna assembly (trunk lid) is normal (Refer to Antenna Test ).
Antennas to be checked
OK: Normal is displayed.

Q. Is the check result normal?

Go to Step 4.

Replace the outside transmission antenna assembly (trunk lid).

STEP 4. 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 ).

Intermittent malfunction is suspected (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).