Entry Answer-Back Buzzer Does Not Sound

THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function): Entry Answer-back Buzzer does not Sound

Entry Answer-back Buzzer does not Sound

DESCRIPTION

The smart key system uses the wireless door lock buzzer 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 (driver side junction block assembly) via CAN communication. The wireless door lock assembly sounds the buzzer according to the signal from the main body ECU.

INSPECTION PROCEDURE
NOTICE: The smart key system (for entry function) uses a multiplex communication system (LIN communication system) and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting How To Proceed With Troubleshooting. Troubleshoot the smart key system (for entry function) after confirming that the communication system is functioning properly.

PROCEDURE

1. READ VALUE USING TECHSTREAM (ANSWER-BACK BUZZER FUNCTION)
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the Data List according to the display on the Techstream.

Main Body (Main Body ECU (Driver Side Junction Block Assembly))





Result:





B -- PERFORM CUSTOMIZE SETTING (Proceed to Customize Parameters)
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 (Main Body ECU (Driver Side Junction Block Assembly))





OK:
Wireless door lock buzzer sounds.

NG -- GO TO WIRELESS DOOR LOCK CONTROL SYSTEM (Proceed to No Answer-Back)
OK -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)