Wireless Door Lock Buzzer Circuit

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

DESCRIPTION

The main body ECU RH 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 engine switch on (IG).

(c) Turn the Techstream main switch on.

(d) Select the ACTIVE TEST mode on the Techstream.

BODY (Main Body ECU RH):





(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 (MAIN BODY ECU RH - WIRELESS DOOR LOCK BUZZER - BODY GROUND)

A -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU RH - WIRELESS DOOR LOCK BUZZER - BODY GROUND)

(a) Disconnect the A36 main body ECU RH 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) Disconnect the A18 wireless door lock buzzer connector.





(b) 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 MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)