Toyota Tacoma (2015-2018) Service Manual: Front Left Seat Heat Sensor Circuit (B14C1)
DESCRIPTION
Output to the front seat cushion heater assembly LH temperature sensor stops if one of the following occurs: 1) the temperature sensor is open or shorted; or 2) the temperature sensor is damaged and its output value does not change.
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
B14C1 |
Seat heater temperature sensor malfunction |
|
WIRING DIAGRAM
PROCEDURE
|
1. |
CLEAR DTC |
(a) Clear the DTCs (See page .gif)
).
|
.gif)
|
2. |
CHECK FOR DTC |
(a) Check for DTCs (See page ).
OK:
DTC B14C1 is not output.
| OK | .gif) |
USE SIMULATION METHOD TO CHECK |
|
|
3. |
READ VALUE USING TECHSTREAM |
(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 / Air Conditioner / Data List.
(e) Check the value(s) by referring to the table below.
Air Conditioner:
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
FL Seat Heater Temperature |
Front seat LH side seat heater temperature / min: -29.7°C or max: 59.55°C |
Within range from 36 to 42.2°C (96 to 108°F) |
Front seat heater is on |
OK:
The display is as specified in the normal condition column.
Result|
Result |
Proceed to |
|---|---|
|
NG |
A |
|
OK |
B |
| B | |
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
|
|
4. |
INSPECT FRONT SEAT CUSHION HEATER ASSEMBLY LH |
(a) Remove the front seat cushion heater assembly LH (See page
).
(b) Inspect the front seat cushion heater assembly LH (See page
).
| NG | |
REPLACE FRONT SEAT CUSHION HEATER ASSEMBLY LH |
|
|
5. |
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - FRONT SEAT CUSHION HEATER ASSEMBLY LH) |
(a) Disconnect the A35 and A36 air conditioning amplifier assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A36-32 (TSL) - S40-2 (TH) |
Always |
Below 1 Ω |
|
A35-15 (SG-2) - S40-6 (E) |
Always |
Below 1 Ω |
|
A36-32 (TSL) - Body ground |
Always |
10 kΩ or higher |
|
A35-15 (SG-2) - Body ground |
Always |
10 kΩ or higher |
| OK | |
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Front Right Seat Heat Sensor Circuit (B14C0)
DESCRIPTION
Output to the front seat cushion heater assembly RH temperature sensor stops
if one of the following occurs: 1) the temperature sensor is open or shorted; or
2) the temperature sensor ...
Driver Side Seat Heater does not Operate
DESCRIPTION
When the seat heater switch on the air conditioning control assembly is operated,
the air conditioning amplifier assembly receives the signal. The air conditioning
amplifier assembly ...
Other materials:
Reassembly
REASSEMBLY
PROCEDURE
1. INSTALL NO. 2 ANTENNA CORD SUB-ASSEMBLY
(a) Using hot-melt glue, install the No. 2 antenna cord sub-assembly as shown
in the illustration.
2. INSTALL NO. 1 ROOF WIRE (w/ Vanity Light)
(a) w/ EC Mirror:
(1) Align the aiming tape as shown in the illustration.
...
Setup menu
You can adjust the multimedia system to your desired settings.
Display “Setup” screen
Press the “SETUP” button to display the “Setup” screen.
Select to adjust the settings for
operation sounds, screen animation, etc.
Select to set the voice settings.
Select to adjust the sett ...
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
LANE DEPARTURE ALERT SYSTEM
DTC No.
Detection Item
Link
C1A47
Steering Angle Sensor
C1AA0
Front Camera Module Circuit
C1AA1
F ...
