Toyota Tacoma (2015-2018) Service Manual: 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
.gif)
). - 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:
Entry functions operate normally.
| OK | .gif) |
GO TO METER / GAUGE SYSTEM |
| NG | |
GO TO OTHER PROBLEM |
Driver Side Door Entry Lock Function does not Operate
DESCRIPTION
If the entry lock function does not operate for the driver door only, but the
entry unlock function operates, the request code is being transmitted properly from
the driver door. In t ...
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:
Magnetic Clutch Relay
Inspection
INSPECTION
PROCEDURE
1. INSPECT MAGNET-CLUTCH RELAY
(a) Check the resistance.
(1) Using an ohmmeter, measure the resistance between the terminals.
Standard:
Tester Connection
Specified Condition
3 - 5
...
Slip Indicator Light Remains ON
DESCRIPTION
The slip indicator light blinks during VSC or TRAC and AUTO LSD operation. When
the system fails, the slip indicator light comes on to warn the driver.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When replacing the skid control ECU (master cylinder solenoid), perform ...
Skid Control Buzzer Circuit (C1A4A)
DESCRIPTION
The millimeter wave radar sensor assembly is connected to the forward recognition
camera via CAN communication.
The millimeter wave radar sensor assembly operates the pre-collision alarm by
sending a buzzer request signal to the skid control buzzer.
If the millimeter wave radar se ...
