[Previous][Next]
DTC B240C: Tail gate antenna (outdoor) open
 
 
cautionWhen replacing the ECU, always check that the communication circuit is normal.
 
 
DTC SET CONDITION
If an open or short to ground circuit is detected in the outside transmission antenna assembly (trunk lid), the DTC is set.
 
 
TECHNICAL DESCRIPTION (COMMENT)
An open circuit or short to ground is detected consecutively five times when radio waves are sent from the outside transmission antenna assembly (trunk lid).
 
 
TROUBLESHOOTING HINTS
  • Malfunction of the outside transmission antenna assembly (trunk lid)
  • Malfunction of the KOS&OSS-ECU
  • Damaged wiring harness and connectors
 
 
DIAGNOSIS
STEP 1. Check of short to power supply, short to ground, and open circuit in EGTP, EGTG line between the outside transmission antenna assembly (trunk lid) connector and the KOS&OSS-ECU connector.
Is the check result normal?
Go to Step 2.
Repair the connector(s) or wiring harness.
 
STEP 2. Keyless operation system communication test.
Check that the communication with the outside transmission antenna assembly (trunk lid) is normal (Refer to Antenna Test ).
  • Gate/Trunk lid antenna (outdoor)
OK: Normal is displayed.
Is the check result normal?
Go to Step 3.
Replace the outside transmission antenna assembly (trunk lid).
 
STEP 3. Check whether the diagnostic trouble code is set again.
(1) Erase the DTC.
(2) Turn the power supply mode of the engine switch to "OFF".
(3) Close all the doors and press the trunk lid opener switch to open the trunk lid several times.
(4) Check if the DTC is set.
Is the DTC set?
Replace KOS&OSS-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 Deal with Intermittent Malfunction ).