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Wireless Door Lock Buzzer Circuit

  1. Disconnect wireless door lock buzzer located behind driver's kick panel. Using DVOM, measure resistance between buzzer terminals. Resistance should be about 1000 ohms. Replace buzzer if necessary. If buzzer is okay, go to next step.
  2. Remove wireless door lock volume switch located below steering column. Using DVOM, measure resistance between switch terminals. Resistance should be infinite in OFF position, 10 k/ohms in MIN position, and zero ohms in MAX position. If resistance is as specified, go to next step. If resistance is not as specified, replace wireless door lock volume switch.
  3. Remove wireless door lock ECU (leave wire harness connected). Using DVOM, measure voltage (backprobe) between ground and terminal No. 3 (Yellow/Black wire) at wireless door lock ECU harness connector. See Figure. Check for one short voltage signal as LOCK button is pressed on transmitter, and 2 short voltage signals as UNLOCK button is pressed on transmitter. If voltage signals are as specified, go to next step. If voltage signals are not as specified, replace wireless door lock ECU.
  4. Check for open in buzzer circuit between wireless door lock ECU, wireless door lock volume switch and buzzer. See WIRING DIAGRAMS . Repair as necessary.
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