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STEP 16. Check the horn (LO) work normally. ZC6045080000 Connect the battery as shown, and verify that the horn sounds. Q:Does the horn (LO) work normally? YES: Go to Step 17. NO: Replace the horn (LO).go to step 18. STEP 17. Retest the theft-alarm system. Q:Does the theft-alarm system work normally? YES: The trouble can be an intermittent malfunction (Refer to GROUP 00, How to use Troubleshooting/inspection NO<Horn (HI) and Horn (LO) do not sound.>: Replace the ETACS-ECU. NO<Horn (LO) does not sound.>: Replace the ETACS-ECU. NO<Horn (HI) does not sound.>: Carry out the troubleshooting again. Inspection Procedure 5: Panic alarm does not work normally. M15410300046USA0000010000 TECHNICAL DESCRIPTION (COMMENT) TROUBLESHOOTING HINTS ⦆ Keyless operation system <KOS> or keyless entry ⦆ The ETACS-ECU may be defective ⦆ Function is not set with the customization. ⦆ The wiring harness or connectors may have loose, DIAGNOSIS Required Special Tools: ⦆ MB992006: Extra fine probe ⦆ MB991223: Harness set ⦆ MB991958: Scan Tool (M.U.T.-III Sub Assembly) ⦆ MB991824: Vehicle Communication Interface (V.C.I.) ⦆ MB991827: M.U.T.-III USB Cable ⦆ MB991910: M.U.T.-III Main Harness A (Vehicles with ALARM SYSTEM 54Af-25 DIAGNOSIS |