Toyota Tacoma (2015-2018) Service Manual: On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT FOR COOLANT LEAK
HINT:
- The sliding surface inside the engine water pump assembly is lubricated by engine coolant. As some engine coolant is discharged during normal operation, engine coolant residue (solids) may be found on the drain plug or the bottom of the engine water pump assembly. Also, engine coolant may leak if foreign matter enters the engine water pump assembly, however the sealing performance will recover when the foreign matter is pushed out or breaks into fine pieces. In this case, check the area around the engine water pump assembly.
- Before performing this inspection, check that there are no engine coolant leaks from any parts other than the engine water pump assembly. If there are leaks, inspect those areas first.
- Perform this inspection when the engine is cold.
(a) Visually check the engine water pump assembly.
(1) Check that engine coolant is not dripping from the engine water pump assembly.
HINT:
- If engine coolant is dripping, replace the engine water pump assembly.
- If engine coolant is not dripping, perform the following check.
(b) Inspect the area around the engine water pump assembly.
HINT:
Check for deposits around the drain plug of the engine water pump assembly.
(1) Remove the fan pulley (See page .gif)
).
|
(2) Press a piece of thin paper towel against the drain plug or deposits on the lip of the drain plug and check that the paper towel is not wet. Text in Illustration
HINT:
|
|
2. INSPECT ENGINE WATER PUMP ASSEMBLY
|
(a) Turn the pulley and check that the water pump bearing moves smoothly and quietly. If necessary, replace the engine water pump assembly. |
|
(b) Install the fan pulley (See page ).
3. INSPECT FLUID COUPLING ASSEMBLY
(a) Remove the fan with fluid coupling assembly (See page
).
|
(b) Remove the 4 nuts and fan from the fluid coupling assembly. |
|
|
(c) Check that the fluid coupling assembly is not damaged and that no silicon oil leaks. If necessary, replace the fluid coupling assembly. |
|
(d) Install the fan to the fluid coupling assembly with the 4 nuts.
Torque:
10 N·m {102 kgf·cm, 7 ft·lbf}
(e) Install the fan with fluid coupling assembly (See page
).
Components
COMPONENTS
ILLUSTRATION
ILLUSTRATION
...
Removal
REMOVAL
PROCEDURE
1. REMOVE WATER INLET WITH THERMOSTAT SUB-ASSEMBLY
(See page )
2. REMOVE NO. 1 RADIATOR HOSE
3. REMOVE NO. 2 RADIATOR HOSE
4. DISCONNECT RADIATOR RESERVE TANK HOSE
5 ...
Other materials:
Diagnosis System
DIAGNOSIS SYSTEM
1. CHECK DLC3
(a) The vehicle's ECU uses the ISO 9141-2 for communication protocol. The terminal
arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format.
Symbols (Terminal No.)
Terminal Description
Condition
...
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 ...
Diagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
When troubleshooting a vehicle with the diagnosis system, the only difference
from the usual troubleshooting procedure is connecting the Techstream to the vehicle
and reading various data output from the vehicle's skid control ECU (brake actuator
assembly) ...
