Inspection Procedure 7: Buzzers do not sound normally.



caution Before replacing the combination meter, be sure to check that the power supply circuit, earth circuit, and communication circuit are normal.


COMMENTS ON TROUBLE SYMPTOM



Seat belt reminder function
  • Ignition switch ON signal
  • Driver’s seat belt switch signal
  • Passenger’s seat belt switch signal
  • Vehicles speed signal
Keyless operation key reminder buzzer <vehicles with KOS>
  • Ignition switch OFF signal
  • IG knob push switch ON signal
  • Driver’s door switch ON signal
Lamp reminder buzzer function
  • Ignition switch OFF signal
  • Lighting switch ON signal
  • Driver’s door switch ON signal
Door-ajar warning buzzer function
  • Ignition switch ON signal
  • Any door switch or tailgate switch ON signal
  • Vehicles speed signal
Freeze warning buzzer function
  • Ignition switch ON signal
  • Ambient temperature signal
Parking brake reminder buzzer function
  • Ignition switch ON signal
  • Parking brake switch
  • Vehicles speed signal
Multi information display interrupt display buzzer
  • Display condition signal of information display from each warning (When there is a fixed buzzer sounding pattern for each warning, that pattern has the priority.)
Multi information meter switch operation buzzer
  • ON signal for combination multi information meter switch
Turn-signal lamp buzzer function
  • Turn-signal lamp switch ON signal
Shift cancel buzzer, ETACS-ECU function customise buzzer, A/C operation buzzer, audio operation buzzer
  • Sounding request signal from the ETACS-ECU


PROBABLE CAUSES



  • Malfunction of combination meter
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III CAN bus diagnostics



Q. Is the check result normal?





STEP 2. M.U.T.-III diagnosis code



Q. Is the diagnosis code set?





STEP 3. M.U.T.-III other system diagnosis code



Q. Is the diagnosis code set to the any of the above?



















STEP 4. M.U.T.-III actuator test




  • Item 12: Buzzer

Q. Is the check result normal?





STEP 5. Retest the system



Q. Is the check result normal?