Entry Answer-Back Buzzer Does Not Sound

THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function): Entry Answer-back Buzzer does not Sound
- Entry Answer-back Buzzer does not Sound

DESCRIPTION

The smart access system with push-button start uses the wireless door lock buzzer assembly to perform various vehicle exterior warnings. When the conditions for each warning are met, the certification ECU (smart key ECU assembly) sends a buzzer request signal to the main body ECU (multiplex network body ECU) via CAN communication. The wireless door lock assembly sounds the buzzer according to the signal from the main body ECU (multiplex network body ECU).

INSPECTION PROCEDURE

NOTICE:
* The smart access system with push-button start (for Entry Function) uses a multiplex communication system (LIN communication system) and the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting How to Proceed With Troubleshooting. Troubleshoot the smart access system with push-button start (for Entry Function) after confirming that the communication systems are functioning properly.
* When using the Techstream with the power switch off to troubleshoot:
Connect the Techstream to the DLC3 and turn a courtesy light switch on and off at 1.5-second intervals until communication between the Techstream and vehicle begins.
* Check that there are no electrical key transmitters in the vehicle.
* Before performing the inspection, check that DTC B1242 (wireless door lock control) is not output Reading and Clearing Diagnostic Trouble Codes.
* Before replacing the certification ECU (smart key ECU assembly), refer to the smart access system with push-button start (for Entry Function) Smart Access System With Push-Button Start (For Entry Function).
* After repair, confirm DTC not reoccur with performing the "DTC Output Confirmation Operation".

PROCEDURE

1. READ VALUE USING TECHSTREAM (ANSWER-BACK BUZZER FUNCTION)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Utility / Customize / Wireless Door Lock.

(e) Select the setting by referring to the table below.

Main Body





Result:





B -- PERFORM CUSTOMIZE SETTING (Proceed to Customize Parameters) Smart Access System With Push-Button Start (For Entry Function)
A -- Continue to next step.

2. PERFORM ACTIVE TEST USING TECHSTREAM

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

(b) Perform the Active Test according to the display on the Techstream.

Main Body





OK:

Wireless door lock buzzer sounds.

NG -- GO TO WIRELESS DOOR LOCK CONTROL SYSTEM (Proceed to No Answer-Back) No Answer-Back

OK -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal