Replacement
REPLACEMENT
PROCEDURE
1. REMOVE NO. 1 ENGINE UNDER COVER
2. REMOVE NO. 2 ENGINE UNDER COVER
3. DRAIN ENGINE COOLANT
(a) Loosen the radiator drain cock plug and drain the coolant.
NOTICE:
Do not remove the reserve tank cap or radiator drain cock plug while the engine and radiator are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.
HINT:
Collect the coolant in a container and dispose of it according to the regulations in your area.
(b) Remove the radiator cap sub-assembly from the radiator assembly.
Text in Illustration
*1 |
Radiator Cap Sub-assembly |
*2 |
Radiator Drain Cock Plug |
4. ADD ENGINE COOLANT
(a) Tighten the radiator drain cock plug by hand.
(b) Slowly fill the radiator with TOYOTA Super Long Life Coolant (SLLC).
Standard Capacity:
7.1 liters (7.5 US qts, 6.2 lmp. qts)
HINT:
TOYOTA vehicles are filled with TOYOTA SLLC at the factory. In order to avoid damage to 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).
NOTICE:
Never use water as a substitute for engine coolant.
(c) Slowly pour coolant into the radiator reservoir tank until it reaches the full line. Text in Illustration
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(d) Squeeze the No. 1 and No. 2 radiator hoses several times by hand, and then check the level of the coolant.
If the coolant level is low, add coolant.
(e) Bleed air from the cooling system.
(1) Warm up the engine until the thermostat opens. While the thermostat is open, circulate the coolant for several minutes.
HINT:
The thermostat open timing can be confirmed by squeezing the No. 2 radiator hose by hand, and sensing vibrations when the engine coolant starts to flow inside the hose.
(2) Maintain the engine speed at 2500 to 3000 rpm.
(3) Squeeze the inlet and No. 1 and No. 2 radiator hoses several times by hand to bleed air.
CAUTION:
When squeezing the radiator hoses:
NOTICE:
(f) Stop the engine and wait until the engine coolant cools down.
(g) Add engine coolant to the full line on the radiator reservoir.
5. INSPECT FOR COOLANT LEAK
6. INSTALL NO. 2 ENGINE UNDER COVER
7. INSTALL NO. 1 ENGINE UNDER COVER
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY OPERATION
(a) Apply the parking brake.
(b) Turn the ignition switch to ON.
(c) Depress the brake pedal and check that the engine starts when the shift lever
is in N or P, b ...
Linear Solenoid Circuit (C1298/98)
DESCRIPTION
The AWD control ECU receives signals from each sensor to control clutch pressure
to distribute torque according to the driving conditions.
DTC No.
DTC Detection Condition
Trouble Area
C1298/98
...
Speed Signal Circuit
DESCRIPTION
The combination meter assembly receives the vehicle speed signal from this circuit.
The wheel speed sensors produce an output that varies according to the vehicle speed.
The wheel speed sensor output is received by the skid control ECU which u ...