MAINTENANCE NR Series COOLANT(for Intercooler) REPLACEMENT
CAUTION / NOTICE / HINT
- CAUTION:
-
-
Do not remove the reserve tank cap (for Intercooler), air release valve or radiator drain cock plug (for Intercooler) while the engine and radiator assembly are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.
PROCEDURE
1.DRAIN COOLANT (for Intercooler)
Remove the No. 1 engine under cover assembly.
| *a | Hose |
Connect a hose with an inside diameter of 9 mm (0.354 in.) to the radiator drain cock plug (for Intercooler) as shown in the illustration.
Loosen the radiator drain cock plug (for Intercooler).
| *1 | Reserve Tank Cap (for Intercooler) |
| *2 | Radiator Drain Cock Plug (for Intercooler) |
Remove the reserve tank cap (for Intercooler). Then drain the coolant (for Intercooler).
- HINT:
-
Collect the coolant in a container and dispose of it according to the regulations in your area.
Tighten the radiator drain cock plug (for Intercooler).
- Torque:
- 1.0 N*m (10 kgf*cm, 9 in.*lbf)
Disconnect the hose from the radiator drain cock plug (for Intercooler).
2.ADD COOLANT (for Intercooler)
When using the GTS:
Remove the reserve tank cap (for Intercooler).
Slowly pour coolant into the intercooler reservoir assembly until it reaches the FULL line.
- Standard Capacity:
1.9 liters (2.0 US qts, 1.7 Imp. qts)
- NOTICE:
-
Do not substitute plain water for coolant.
- HINT:
-
TOYOTA vehicles are filled with TOYOTA SLLC at the factory. In order to avoid damaging the engine cooling system and other technical problems, only use TOYOTA SLLC or similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, non-borate coolant with long-life hybrid organic acid technology (coolant with long-life hybrid organic acid technology is a combination of low phosphates and organic acids).
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Enter the following menus: Powertrain / Engine / Active Test / Control the Intercooler Water Pump
- Powertrain > Engine > Active Test
-
Tester Display Control the Intercooler Water Pump - 50004 372 9
| *a | FULL Line |
While adding coolant so that the coolant level is kept near the FULL line, activate the electric water pump assembly for approximately 1 minute and then stop pump operation for 1 minute. Repeat this operation approximately 3 times until the operation sound of the electric water pump assembly reduces and no more bubbles are visible in the intercooler reservoir assembly or the coolant level in the intercooler reservoir assembly stabilizes.
- OK:
The operation sound of the electric water pump assembly reduces and no more bubbles are visible in the intercooler reservoir assembly or the coolant level in the intercooler reservoir assembly stabilizes.
- HINT:
-
If the intercooler reservoir assembly is filled excessively with coolant, coolant may overflow when the electric water pump assembly is stopped.
When no more bubbles are visible in the intercooler reservoir assembly or the coolant level in the intercooler reservoir assembly has stabilized, add coolant to the FULL line, and install the reserve tank cap (for Intercooler).
When not using the GTS:
Remove the reserve tank cap (for Intercooler).
| *1 | Air Drain Cock Plug (for Intercooler) |
| *a | Hose |
| *b | Container |
Connect a hose with an inside diameter of 9 mm (0.354 in.) to the air drain cock plug (for Intercooler) as shown in the illustration.
- HINT:
-
Use a container to catch the draining engine coolant.
Loosen the air drain cock plug (for Intercooler).
| *a | B Line |
Add coolant to the intercooler reservoir assembly filler opening until it is filled to the B line at the base of the intercooler reservoir filler neck.
- Standard Capacity:
1.9 liters (2.0 US qts, 1.7 Imp. qts)
- NOTICE:
-
Do not substitute plain water for coolant.
- HINT:
- ·
The B line is the lower edge of the inner wall of the filler neck.
·TOYOTA vehicles are filled with TOYOTA SLLC at the factory. In order to avoid damaging the engine cooling system and other technical problems, only use TOYOTA SLLC or similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, non-borate coolant with long-life hybrid organic acid technology (coolant with long-life hybrid organic acid technology is a combination of low phosphates and organic acids).
Tighten the air drain cock plug (for Intercooler).
- Torque:
- 1.0 N*m (10 kgf*cm, 9 in.*lbf)
Install the reserve tank cap (for Intercooler). [*1]
Start the engine. [*2]
Operate the electric water pump assembly by running the engine at 2000 rpm or higher with the shift lever in N or P for 1 minute and then stop pump operation for 1 minute. Repeat this operation approximately 3 times until the operation sound of the electric water pump assembly reduces and no more bubbles are visible in the intercooler reservoir assembly or the coolant level in the intercooler reservoir assembly stabilizes. [*3]
- CAUTION:
-
- ·
Be careful as the radiator hoses are hot.
·Keep your hands away from the cooling fans.
- NOTICE:
- ·
Make sure that the coolant level in the intercooler reservoir assembly does not drop below the LOW line when the engine speed is 2000 rpm or more.
·Immediately after starting the engine, if the intercooler reservoir assembly runs out of coolant, stop the engine, wait until the coolant has cooled down, and add coolant until it reaches the B line.
Stop the engine and wait until the coolant has cooled down to ambient temperature. [*4]
Check that the coolant level is between the FULL and LOW line. [*5]
If the coolant level is below the LOW line, add coolant to the intercooler reservoir assembly until it reaches the FULL line, and repeat steps from [*1] to [*5].
If the coolant level is above the FULL line, drain coolant so that the coolant level is between the FULL and LOW line.
3.INSPECT FOR COOLANT LEAK (for Intercooler)
Install the No. 1 engine under cover assembly.