Wireless Door Lock Control System (w/o Smart Key System)

DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM (w/o Smart Key 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. INSPECT WIRELESS DOOR LOCK BUZZER

(a) Disconnect the A48 wireless door lock buzzer connector.





(b) 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 -- Continue to next step.

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

(a) Disconnect the E9 main body ECU connector.





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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Wireless Door Lock Control System (w/o Smart Key System)