No Answer-Back

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

DESCRIPTION

In some cases, wireless door lock control functions are normal but the hazard warning lights and/or wireless door lock buzzer answer-back function(s) do not operate. In such cases, the main body ECU's hazard warning lights and wireless door lock buzzer signal outputs may be malfunctioning.

NOTICE:
Troubleshooting should be started after confirming that the customize status of the answer-back function has been switched ON.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WIRELESS DOOR LOCK CONTROL FUNCTION

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

Result





C -- Go to Only Wireless Control Function is Inoperative Only Wireless Control Function Is Inoperative

B -- PERFORM ACTIVE TEST USING TECHSTREAM (WIRELESS DOOR LOCK BUZZER)
A -- Continue to next step.

2. PERFORM ACTIVE TEST USING TECHSTREAM (TURN SIGNAL FLASHER RELAY)

(a) Select the Active Test, use the Techstream to generate a control command, and then check that the hazard warning lights flash.

Main body





OK:

Hazard warning lights turn ON or OFF.

NG -- Go to LIGHTING SYSTEM How To Proceed With Troubleshooting

OK -- REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)

3. PERFORM ACTIVE TEST USING TECHSTREAM (WIRELESS DOOR LOCK BUZZER)

(a) Select the Active Test, use the Techstream to generate a control command, and then check that the wireless buzzer operates normally.

Main body





OK:

Wireless buzzer turns ON or OFF.

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

OK -- REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)

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





(a) Disconnect the A34 buzzer connector.

(b) Disconnect the J1 ECU connector.

(c) 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.

5. CHECK WIRELESS DOOR LOCK BUZZER (OPERATION)

(a) Temporarily replace the wireless door lock buzzer with a new or normally functioning one Components.

(b) Check that the buzzer sounds when using the transmitter LOCK and UNLOCK switches.

OK:

The buzzer sounds.

NOTICE:
When battery voltage is directly applied to the buzzer, the buzzer does not sound.

HINT
The buzzer circuit is built into the main body ECU, not into the buzzer itself.

NG -- REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)

OK -- END (WIRELESS DOOR LOCK BUZZER IS DEFECTIVE)