Toyota Tacoma (2015-2018) Service Manual: Operation Check
OPERATION CHECK
1. CHECK SEAT HEATER
(a) Turn the ignition switch to ON.
(b) Check that the indicator illuminates and the surface of the front seat warms up, when the seat heater switch on the air conditioning control assembly is turned on.
(c) Check that the front seat surface temperature changes according to the operation of the seat heater switch on the air conditioning control assembly as follows: HI → MID → LO.
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use this procedure to troubleshoot the seat heater system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
...
System Description
SYSTEM DESCRIPTION
1. FRONT SEAT HEATER
(a) By operating the seat heater switch on the air conditioning control assembly,
the temperature can be controlled within the range of 36 to 42.2°C (96 to ...
Other materials:
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)
Certification ECU (smart key ECU assembly)
CAUTI ...
Dtc Check / Clear
DTC CHECK / CLEAR
CHECK DTC
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes.
(e) Check for DTCs.
Click here
CLEAR DTC
(a) Connect the Techstream to the ...
Fail-safe Chart
FAIL-SAFE CHART
1. FAIL-SAFE OPERATION AND DEACTIVATION CONDITION
DIFFERENTIAL SYSTEM (w/ Differential Lock)
DTC No.
Fail-safe Operation
Fail-safe Deactivation Condition
U0122
All switching prohibited
When rear differential is locked ...
