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

HINT
The wireless door lock buzzer circuit uses BEAN for communication. If there are malfunctions in this circuit, check for DTCs in the multiplex communication system.

PROCEDURE

1. CHECK FRONT CONTROLLER

(a) Check if the front controller properly controls each function (lighting, wiper, buzzer, etc.).

Result:





C -- INSPECT WIRELESS DOOR LOCK BUZZER

B -- REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE OR GROUND CIRCUIT)

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

2. INSPECT WIRELESS DOOR LOCK BUZZER

(a) Disconnect the 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.

Resistance:





NG -- REPLACE WIRELESS DOOR LOCK BUZZER
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (BETWEEN FRONT CONTROLLER, BODY GROUND AND DOOR LOCK BUZZER)

(a) Disconnect the engine room R/B and J/B (1I) connector.





(b) Measure the resistance according to the value(s) in the table below.

Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

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