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STEP 3. Check the wiring harness between the key reminder ⦆ Check the signal lines for open circuit and short circuit. Q:Is the wiring harness between key reminder switch connector C-211 (terminal No. 4, 9) and the KOS-ECU connector C-102 (terminal No. 8, 5) in good condition? YES: Go to Step 4. NO: The wiring harness may be damaged or the connector (s) may have loose, corroded or damaged terminals, or STEP 4. Replace the key reminder switch, and check (1) Erase the DTC. (2) Turn the ignition switch from the "LOCK" (OFF) position to (3) Check if the DTC is set. Q:Is the DTC set? YES: Replace KOS-ECU and register the ID codes. (Refer NO: The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection DTC B2409: STL unit comm.(No response) M14209100126USA0000010000 ⦆ If the DTC B2409 is set, diagnose the CAN bus ⦆ Whenever the steering lock unit is replaced, KEYLESS OPERATION SYSTEM (KOS) 42B-47 DIAGNOSIS |