Page 1081 of 2543
COOLANT CHECK
1. CHECK ENGINE COOLANT LEVEL AT RADIATOR
RESERVOIR
The engine coolant level should be between the ºLOWº and
ºFULLº lines.
If low, check for leaks and add engine coolant up to the
ºFULLº line.
2. CHECK ENGINE COOLANT QUALITY
(a) Remove the radiator cap.
CAUTION: To avoid the danger of being burned, do not remove
the radiator cap while the engine and radiator are still hot, as
fluid and steam can be blown out under pressure.
(b) There should not be any excessive deposits of rust or scale
around the radiator cap or radiator filler hole, and the coolant
should be free from oil.
If excessively dirty, replace the coolant.
(c) Reinstall the radiator cap. EG±330
± ENGINECOOLING SYSTEM
Page 1082 of 2543

COOLANT REPLACEMENT
1. DRAIN ENGINE COOLANT
(a) Remove the radiator cap.
CAUTION: To avoid the danger of being burned, do not remove
the radiator cap while the engine and radiator are still hot, as
fluid and steam can be blown out under pressure.
(b) Loosen the 2 drain plugs (for the engine and radiator), and
drain the coolant.
(c) Close the drain plugs.
Torque:
Engine drain plug
29 NVm (300 kgfVcm, 22 ftVlbf)
2. FILL ENGINE COOLANT
(a) Slowly fill the system with coolant.
wUse a good brand of ethylene±glycol base coolant and
mix it according to the manufacturer's directions.
wUsing coolant which includes more than 50 %
ethylene±glycol (but not more than 70 %) is
recommended.
NOTICE:
wDo not use an alcohol type coolant.
wThe coolant should be mixed with demineralized water or
distilled water.
Capacity (w/ Heater):
2JZ±GE
M/T
7.3 liters (7.7 US qts, 6.4 lmp. qts)
A/T
8.3 liters (8.8 US qts, 7.3 lmp. qts)
2JZ±GTE
M/T
9.5 liters (10.0 US qts, 8.4 lmp. qts)
A/T
9.4 liters (9.9 US qts, 8.3 lmp. qts)
(b) Install the radiator cap.
(c) Start the engine, and bleed the cooling system.
(d) Refill the reservoir with coolant until it reaches the ºFULLº
line.
3. CHECK ENGINE COOLANT FOR LEAKS
± ENGINECOOLING SYSTEMEG±331
Page 1083 of 2543
WATER PUMP
COMPONENTS FOR REMOVAL AND
INSTALLATION
EG±332± ENGINECOOLING SYSTEM
Page 1084 of 2543
± ENGINECOOLING SYSTEMEG±333
Page 1085 of 2543

WATER PUMP REMOVAL
1. 2JZ±GTE:
REMOVE NO.1 AIR HOSE
2. 2JZ±GE:
REMOVE AIR CLEANER, VAF METER AND INTAKE AIR
CONNECTOR PIPE ASSEMBLY
(See step 6 in engine removal in Engine Mechanical)
3. 2JZ±GTE:
REMOVE AIR CLEANER AND MAF METER ASSEMBLY
(See step 7 in engine removal in Engine Mechanical)
4. REMOVE RADIATOR ASSEMBLY
(See radiator removal)
5. 2JZ±GTE M/T:
REMOVE DRIVE BELT TENSIONER DAMPER
(See step 2 in timing belt removal in Engine Mechanical)
6. REMOVE DRIVE BELT, FAN, FLUID COUPLING
ASSEMBLY AND WATER PUMP PULLEY
(a) Loosen the 4 nuts holding the fluid coupling to the water
pump.
(b) Loosen the drive belt tension by turning the drive belt
tensioner clockwise, and remove the drive belt.
(c) Remove the 4 nuts, the fan, fluid coupling assembly and
water pump pulley.
7. REMOVE WATER INLET, LOWER RADIATOR HOSE
ASSEMBLY AND THERMOSTAT
(See step 2 to 4 in thermostat removal)
8. REMOVE TIMING BELT
(See steps 4 to 15 in timing belt removal in Engine Me-
chanical)
9. 2JZ±GTE:
REMOVE GENERATOR
(See step 6 in generator removal in Charging System)
10. 2JZ±GE Except California:
REMOVE EXHAUST MANIFOLD HEAT INSULATOR EG±334
± ENGINECOOLING SYSTEM
Page 1086 of 2543
11. 2JZ±GTE:
DISCONNECT TURBO WATER HOSES FROM WATER
OUTLET
12. 2JZ±GE:
REMOVE WATER BYPASS OUTLET AND NO.1 WATER
BYPASS PIPE
(a) Remove the 2 bolts, water bypass outlet and No.1 water
bypass pipe.
(b) Remove the 3 O±rings from the water bypass outlet and No.1
water bypass pipe.
13. 2JZ±GTE:
REMOVE WATER OUTLET AND NO.1 WATER BYPASS
PIPE
(a) Disconnect the ECT sensor and sender gauge connectors.
(b) Remove the 2 bolts, water outlet and gasket.
(c) Remove the No.1 water bypass pipe and 2 O±rings.
14. REMOVE IDLER PULLEY
(See steps 16 in timing belt removal in Engine Mechani-
cal)
15. REMOVE WATER PUMP
(a) 2JZ±GE:
Remove the mounting bolt, and disconnect the engine wire
bracket.
(b) 2JZ±GE:
Loosen the generator mounting nut.
(c) 2JZ±GE:
Remove the generator mounting bolt, and disconnect the
generator from the water pump.
± ENGINECOOLING SYSTEMEG±335
Page 1087 of 2543
(d) Remove the 2 nuts, and disconnect the No.2 water bypass
pipe from the water pump.
(e) 2JZ±GTE:
Disconnect the No.3 turbo water hose from the water pump.
(f) Remove the 6 bolts, water pump and gasket.
(g) Remove the O±ring from the cylinder block.
WATER PUMP COMPONENTS
INSPECTION
1. INSPECT WATER PUMP
Turn the pulley seat, and check that the water pump bearing
is not rough or noisy.
If necessary, replace the water pump.
2. INSPECT FLUID COUPLING
(a) Remove the 4 nuts and fan from the fluid coupling. EG±336
± ENGINECOOLING SYSTEM
Page 1088 of 2543

(b) Check that the fluid coupling is not damaged and that no
silicon oil leaks.
If necessary, replace the fluid coupling.
(c) Reinstall the fan to the fluid coupling with the 4 nuts.
Torque: 7.4 NVm (75 kgfVcm, 65 in.Vlbf)
WATER PUMP INSTALLATION
1. INSTALL WATER PUMP
(a) Install a new O±ring to the cylinder block.
(b) Install a new gasket to the water pump.
(c) Connect the water pump to the water bypass pipe. Do not
install the nut yet.
(d) Install the water pump with the 2 bolts (A) and 4 bolts (B).
Torque: 21 NVm (210 kgfVcm, 15 ftVlbf)
HINT: Hand tighten the (A) bolts first.
(e) Install the 2 nuts holding the No.2 water bypass pipe to the
water pump.
Torque: 21 NVm (210 kgfVcm, 15 ftVlbf)
(f) 2JZ±GTE:
Connect the No.3 turbo water hose to the water pump.
(g) 2JZ±GE:
Install the generator mounting bolt.
Torque: 37 NVm (380 kgfVcm, 27 ftVlbf)
(h) 2JZ±GE:
Tighten the generator mounting nut.
Torque: 37 NVm (380 kgfVcm, 27 ftVlbf)
(i) 2JZ±GE:
Install the engine wire bracket with the bolt.
± ENGINECOOLING SYSTEMEG±337