Keyless/Power Door Locks/Security System Symptom Troubleshooting - The horn does not sound and/or the headlights do not flash when the PANIC button on the remote is pressed

The horn does not sound and/or the headlights do not flash when the PANIC button on the remote is pressed 

NOTE:  Before troubleshooting, check the B-CAN DTCs. If any DTC is indicated, troubleshoot the indicated DTC first.

1. Determine possible failure area (MICU, others)

   -1. Press the PANIC button.

   Do the horns sound?

   YES 

   Go to step 3.

   NO 

   Go to step 2.

2. Horn operation check

   -1. Press the horn button.

   Do the horns sound?

   YES 

   Replace the remote, then register the new remote .

   NO 

   Check the horn circuit.

3. MICU check

   -1. Turn the headlight switch ON.

   Do the headlights come on?

   YES 

   Intermittent failure, the system is OK at this time.

   NO 

   Check the lighting circuit. Do the MICU input test .