Toyota Tacoma (2015-2018) Service Manual: Lost Communication with Power Source Control (B278C)
DESCRIPTION
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
B278C |
An internal malfunction occurs in the certification ECU (smart key ECU assembly) |
|
CAUTION / NOTICE / HINT
NOTICE:
- When using the Techstream with the vehicle ignition switch off, connect the Techstream to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Access. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
- If the certification ECU (smart key ECU assembly) is replaced, register
the keys (See page
.gif)
).
PROCEDURE
|
1. |
CLEAR DTC |
(a) Clear the DTCs (See page ).
|
.gif)
|
2. |
CHECK FOR DTC |
(a) Check for DTCs (See page ).
OK:
DTC B278C is not output.
| OK | .gif) |
USE SIMULATION METHOD TO CHECK |
| NG | |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
P/W Master Switch Communication Stop (B1206)
DESCRIPTION
This DTC is stored when LIN communication between the power window regulator
master switch assembly and main body ECU (multiplex network body ECU) stops for
10 seconds or more.
...
Front Passenger Side Door ECU Communication Stop (B2322)
DESCRIPTION
This DTC is stored when LIN communication between the front power window regulator
motor assembly RH and main body ECU (multiplex network body ECU) stops for 10 seconds
or more.
...
Other materials:
Rear view monitor system
The rear view monitor system assists the driver by displaying guide lines and
an image of the view behind the vehicle while backing up, for example while parking.
The screen illustrations used in this text are intended as examples, and may
differ from the image that is actually displayed on the ...
Installation
INSTALLATION
PROCEDURE
1. INSTALL CHILD RESTRAINT SEAT ANCHOR BRACKET SUB-ASSEMBLY
HINT:
Use the same procedure for the side.
(a) Install the child restraint seat anchor bracket sub-assembly with the 2 bolts.
Torque:
30 N·m {306 kgf·cm, 22 ft·lbf}
(b) Reinstall the floor carpet.
2. INST ...
Removal
REMOVAL
PROCEDURE
1. PRECAUTION
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting
the cable from the negative (-) battery terminal. Therefore, make sure to read the
disconnecting the cable from the negative (-) battery terminal notices before pr ...
