No Answer-Back

DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM: No Answer-Back
- No Answer-Back

DESCRIPTION

In this case, wireless control functions are normal but the hazard warning light or wireless door lock buzzer answer-back function does not operate.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WIRELESS DOOR LOCK CONTROL FUNCTIONS

(a) Check the wireless door lock functions by operating the transmitter switches.

Result:





B -- HOW TO PROCEED WITH TROUBLESHOOTING Initial Inspection and Diagnostic Overview
A -- Continue to next step.

2. PERFORM ACTIVE TEST USING TECHSTREAM (WIRELESS DOOR LOCK BUZZER, FLASHER RELAY)

(a) Connect a Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the tester ON.

(d) Enter the following menus: Body Electrical / Main Body / Active Test.

(e) According to the display on tester, perform the "Active Test".

Main Body ECU:





Result:





B -- INSPECT WIRELESS DOOR LOCK BUZZER
A -- Continue to next step.

3. CHECK HAZARD WARNING LIGHTS

(a) Check that the hazard warning lights flash when the hazard warning signal switch is pressed.

OK:

Hazard warning lights flash when hazard warning signal switch is pressed.

NG -- GO TO LIGHTING SYSTEM Initial Inspection and Diagnostic Overview

OK -- REPLACE MAIN BODY ECU

4. INSPECT WIRELESS DOOR LOCK BUZZER

(a) Disconnect the A12 wireless door lock buzzer connector.





(b) Measure the resistance.

Standard resistance:





(c) Reconnect the wireless door lock buzzer connector.

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

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

(a) Disconnect the A12 wireless door lock buzzer connector.





(b) Disconnect the 1B main body ECU connector.

(c) Measure the resistance.

Standard resistance:





(d) Reconnect the buzzer connector.

(e) Reconnect the main body ECU connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MAIN BODY ECU