Wireless Door Lock Buzzer Circuit

DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM: Wireless Door Lock Buzzer Circuit

Wireless Door Lock Buzzer Circuit

DESCRIPTION

The certification ECU activates the wireless door lock buzzer when detecting a lock/unlock signal from the door control transmitter.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - WIRELESS DOOR LOCK BUZZER - BODY GROUND)




(a) Disconnect the E58 certification ECU connector and A48 wireless door lock buzzer connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. INSPECT WIRELESS DOOR LOCK BUZZER




(a) Measure the resistance according to the value(s) in the table below.
HINT: The buzzer activation circuit is built into the ECU, not into the buzzer itself. When battery voltage is applied directly to the buzzer, the buzzer will not sound.

Standard resistance:






NG -- REPLACE WIRELESS DOOR LOCK BUZZER
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE