[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
42 -BODY > 42B-KEYLESS OPERATION SYSTEM (KOS) > TROUBLESHOOTING > DIAGNOSIS CODE PROCEDURES > B240C Tail Gate Antenna (Outdoor) Open Circuit
Code No.B240C Tail 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 diagnosis code is set.
 
 
JUDGEMENT CRITERIA
An open circuit or short to earth 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
 
 
DIAGNOSTIC PROCEDURE
STEP 1. Check of short to power supply, short to earth, and open circuit in EGTP, EGTG line 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 ).
  • Tailgate 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 diagnosis code is set again.
(1) Erase the diagnosis code.
(2) Engine switch: "OFF"
(3) Close all the doors and press the lock/open switch of tailgate lock release handle to lock and unlock the door several times.
(4) Check if the diagnosis code is set.
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 Deal with Intermittent Malfunction ).