Operation CHARM: Car repair manuals for everyone.
Home >> Toyota >> 2009 >> Camry L4-2.4L (2AZ-FE) >> Repair and Diagnosis >> Body and Frame >> Locks >> Keyless Entry >> Testing and Inspection >> Component Tests and General Diagnostics >> Wireless Door Lock Control System (w/ Smart Key System) >> Wireless Door Lock Buzzer Circuit
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Wireless Door Lock Buzzer Circuit








DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM (w/ Smart Key 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
pro multis · About Operation CHARM