Toyota Tacoma (2015-2018) Service Manual: Inspection
INSPECTION
PROCEDURE
1. INSPECT FRONT SEAT CUSHION HEATER ASSEMBLY
|
(a) Check the operation of the front seat cushion heater assembly. (1) Apply battery voltage and check the operation of the front seat cushion heater assembly. OK:
NOTICE: Immediately after confirming that the front seat cushion heater assembly is functioning normally, remove the battery leads. Failing to do so may cause the front seat cushion heater assembly to overheat. If the result is not as specified, replace the front seat cushion heater assembly. |
|
(b) Check the operation of the thermostat.
(1) Apply battery voltage and check the operation of the front seat cushion heater assembly.
OK:
|
Connection |
Condition |
Specified Condition |
|---|---|---|
|
Battery positive (+) → Terminal A-3 Battery negative (-) → Terminal C-5 |
Always |
Seat cushion heater temperature becomes below 55°C (129°F) |
NOTICE:
Immediately after confirming that the front seat cushion heater assembly is functioning normally, remove the battery leads. Failing to do so may cause the front seat cushion heater assembly to overheat.
If the result is not as specified, replace the front seat cushion heater assembly.
(c) Check the resistance.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Connection |
Specified Condition |
|---|---|---|
|
A-1 - C-3 |
Always |
Below 1 Ω |
|
A-2 - C-1 |
Always |
Below 1 Ω |
|
A-5 - C-5 - B-2 |
Always |
Below 1 Ω |
Components
COMPONENTS
ILLUSTRATION
*A
for Driver Side
-
-
*1
FRONT SEAT CUSHION HEATER ASSEMBLY
*2
SEPARATE TYPE ...
Removal
REMOVAL
PROCEDURE
1. REMOVE FRONT SEAT ASSEMBLY (for Driver Side)
(See page )
2. REMOVE FRONT SEAT ASSEMBLY (for Front Passenger Side)
(See page )
3. REMOVE SEPARATE TYPE FRONT SEAT CUSHION CO ...
Other materials:
Removal
REMOVAL
PROCEDURE
1. REMOVE AIR CONDITIONING CONTROL ASSEMBLY (for Automatic Air Conditioning System)
Click here
2. REMOVE AIR CONDITIONING CONTROL ASSEMBLY (for Manual Air Conditioning System)
Click here
3. REMOVE LOWER NO. 2 INSTRUMENT PANEL AIRBAG ASSEMBLY
Click here
4. REMOVE INSTR ...
Power Supply Drive Circuit (C1257)
DESCRIPTION
The motor relay (semiconductor relay) is built into the hydraulic brake booster
and drives the pump motor based on a signal from the skid control ECU (master cylinder
solenoid).
DTC No.
DTC Detecting Condition
Trouble Areas
C1257
...
Heater Circuit (C1AAE)
DESCRIPTION
If the forward recognition camera detects a malfunction in the camera heater
(forward recognition hood) circuit, it will output a malfunction signal to the millimeter
wave radar sensor assembly via CAN communication and DTC C1AAE will be stored.
DTC No.
Detect ...
