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TROUBLESHOOTING <KOS-ECU> KEYLESS OPERATION SYSTEM (KOS) 42B-41 STEP 4. KOS communication test ). Q: Is the check result normal? YES : Go to Step 5. NO : Perform troubleshooting for the diagnosis ). STEP 5. Check of the troubles Q: Is the check result normal? YES : Intermittent malfunction is suspected (Refer to GROUP 00 − How to Use Troubleshooting/Inspection Service Points − How to Deal with Intermittent Malfunction ). NO : Replace KOS-ECU and register the ID Inspection Procedure 10: The open switch of the tailgate lock release handle does not perform the CAUTION Before replacing the ECU, ensure that the power PROBABLE CAUSES • Malfunction of the outside transmission antenna assembly (tailgate) • Malfunction of the tailgate lock release handle (open switch) • Damaged wiring harness and connectors • Malfunction of the KOS-ECU DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III diagnosis code Q: Is the diagnosis code set? YES : Refer to diagnosis code chart NO : Go to Step 2. STEP 2. Tailgate lock release handle (open − Tailgate Handle and Latch <Vehicles without electric tail- Q: Is the check result normal? YES : Go to Step 3. NO : Replace the tailgate lock release handle. STEP 3. Check of short to power supply, short to NOTE: Before the wiring harness check, check the Q: Is the check result normal? YES : Go to Step 4. NO : Repair the wiring harness. STEP 4. KOS communication test Q: Is the check result normal? YES : Go to Step 5. NO : Perform troubleshooting for the diagnosis STEP 5. Check of the troubles Q: Is the check result normal? YES : Intermittent malfunction is suspected (Refer to GROUP 00 − How to Use Troubleshooting/Inspection Service Points − How to Deal with Intermittent Malfunction ). NO : Replace KOS-ECU and register the ID |