[Previous][Next]
DTC B240C Lift gate antenna(outdoor) open
 
 
cautionWhen replacing the ECU, always check that the communication circuit is normal.
 
 
 
 
DIAGNOSTIC FUNCTION
If an open circuit is detected in the keyless operation antenna (Rear: Outer side), the DTC is set.
 
 
JUDGMENT CRITERIA
An open circuit or short to ground is detected consecutively five times when radio waves are sent from the keyless operation antenna (Rear: Outer side).
 
 
PROBABLE CAUSES
  • Malfunction of the keyless operation antenna (Rear: Outer side)
  • 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 lines between the keyless operation antenna (Rear: Outer side) connector and the KOS&OSS-ECU connector.
Is the check result normal?
Go to Step 2.
Repair the connectors or wiring harness.
 
STEP 2. Keyless operation system communication test.
Check that the communication with the keyless operation antenna (Rear: Outer side) is normal (Refer to Antenna Communication Test ).
  • Liftgate antenna(outdoor)
OK: Normal is displayed.
Is the check result normal?
Go to Step 3.
Replace the keyless operation antenna (Rear: Outer side) (Refer to ).
 
STEP 3. Check whether the DTC is set again.
(1) Erase the DTC.
(2) Engine switch: "OFF"
(3) Close all the doors and press the lock/open switch of liftgate lock release handle to lock and unlock the door several times.
(4) Check if the DTC is set.
Is the DTC 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 Deal with Intermittent Malfunction ).