Wireless Door Lock Buzzer Circuit

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

Wireless Door Lock Buzzer Circuit

DESCRIPTION

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

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch ON.
(c) Turn the Techstream main switch on.
(d) Select the Active Test mode on the Techstream.

Body





(e) Check that the buzzer sounds/stops when turning the wireless door lock buzzer on/off by using Techstream.
Result:






B -- CHECK HARNESS AND CONNECTOR (BODY ECU - WIRELESS DOOR LOCK BUZZER - BODY GROUND)
A -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. CHECK HARNESS AND CONNECTOR (BODY ECU - WIRELESS DOOR LOCK BUZZER - BODY GROUND)




(a) Disconnect the multiplex network body ECU (B7) connector and wireless door lock buzzer (K1) 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.
3. INSPECT WIRELESS DOOR LOCK BUZZER




(a) Measure the resistance according to the value(s) in the table below.
HINT: The buzzer 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 -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY