Toyota Tacoma 2015-2018 Service Manual: Entry Interior Alarm does not Sound

Toyota Tacoma 2015-2018 Service Manual / Door Lock / Smart Key System(for Entry Function) / Entry Interior Alarm does not Sound

DESCRIPTION

The smart key system (for Entry Function) uses the buzzer in the combination meter assembly to perform various vehicle interior warnings. When the conditions of each warning are met, the certification ECU (smart key ECU assembly) sends a buzzer activation request signal to the combination meter assembly via CAN communication and the buzzer sounds.

CAUTION / NOTICE / HINT

NOTICE:

The smart key system (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. Troubleshoot the smart key system (for Entry Function) after confirming that the communication systems are functioning properly (See page ).
Before replacing the certification ECU (smart key ECU assembly), refer to the smart key system (for Entry Function) (See page ).

PROCEDURE

1.	CHECK ENTRY DOOR LOCK OPERATION

(a) Check that the entry functions operate normally (See page OK: ).

OK:

Entry functions operate normally.

GO TO METER / GAUGE SYSTEM

GO TO OTHER PROBLEM

Driver Side Door Entry Lock Function does not Operate

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Room Oscillator does not Recognize Key

DESCRIPTION If code verification cannot be performed in the vehicle interior, there may be problems with the communication between the vehicle (indoor electrical key antenna assembly (front floor ...

Other materials:

Precaution
PRECAUTION 1. PRECAUTIONS WHEN USING TECHSTREAM (a) When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the DLC3, and turn a courtesy light switch on and off at 1.5 second or less intervals until communication between the Techstream and vehicle begin ...

Antenna Coil Open / Short (B2784)
DESCRIPTION When an open or short circuit is detected in the transponder key amplifier coil built into the engine switch, the certification ECU (smart key ECU assembly) stores this DTC. This DTC is also stored as a past DTC. DTC Code DTC Detection Condition Tro ...

Status Signal Circuit
DESCRIPTION This circuit sends a smart key system status signal from the certification ECU (smart key ECU assembly) to the mobile wireless charger cradle assembly. Based on this signal, the mobile wireless charger cradle assembly suspends or resumes wireless charging. WIRING DIAGRAM CAUTI ...