Cooling PDF
Cooling PDF
COOLING SYSTEM
             ON-VEHICLE INSPECTION
             1.   INSPECT COOLING SYSTEM FOR LEAKS
                  CAUTION:
                  Do not remove the radiator cap while the engine and
                  radiator are still hot. Pressurized, hot engine coolant
                  and steam may be released and cause serious
                  burns.
                  (a) Fill the radiator with coolant and attach a radiator
                      cap tester.
                  (b) Warm up the engine.
                  (c) Using the radiator cap tester, increase the pressure
                      inside the radiator to 118 kPa (1.2 kgf/cm2, 17.1
                      psi), and check that the pressure does not drop.
                      If the pressure drops, check the hoses, radiator or
                      water pump for leaks. If no external leaks are found,
                      check the heater core, cylinder block and head.
   A128110
             2.   CHECK ENGINE COOLANT LEVEL AT RESERVOIR
                  (a) The engine coolant level should be between the
                      "LOW" and "FULL" lines when the engine is cold. If
                      low, check for leaks and add "TOYOTA Super Long
                      Life Coolant" or similar high quality ethylene glycol     CO
                      based non-silicate, non-amine, non-nitrite, and non-
                      borate coolant with long-life hybrid organic acid
                      technology up to the "FULL" line.
             3.   CHECK ENGINE COOLANT QUALITY
                  (a) Remove the radiator cap.
                      CAUTION:
                      Do not remove the radiator cap while the engine
                      and radiator are still hot. Pressurized, hot
                      engine coolant and steam may be released and
                      cause serious burns.
                  (b) Check if there are any excessive deposits of rust or
                      scale around the radiator cap and radiator filler hole.
                      Also, the coolant should be free from oil.
                      HINT:
                      If excessively dirty, replace the coolant.
                  (c) Reinstall the radiator cap.
     CO–2   2GR-FE COOLING – COOLING SYSTEM
                         INSPECTION
                         1.   INSPECT RADIATOR CAP SUB-ASSEMBLY
                              NOTICE:
                              • If the reservoir cap is contaminated , always rinse
                                it with water.
                              • Before using a radiator cap tester, wet the relief
                                valve and pressure valve with engine coolant or
                                water.
                              • When performing procedures "A" and "B" below,
                                keep the tester at an angle of over 30° above the
                                horizontal.
                              (a) Using a radiator cap tester, slowly pump the tester
                                  and check that air is being released from the
                                  vacuum valve (Procedure "A").
                                  Pump speed:
                                     1 push every 3 seconds or more
                                  NOTICE:
                                  Push the pump at a constant speed.
                                  If air is not being released from the vacuum valve,
                                  replace the reservoir cap.
               A051912        (b) Pump the tester and measure the relief valve
                                  opening pressure (Procedure "B").
                                  Pump speed:
CO                                   1 push within 1 second
                                  NOTICE:
                                  The pump speed above should be followed for
                                  the first pump only. If will close the vacuum
                                  valve. Once the vacuum valve is closed, the
                                  pump speed can be reduced.
                                  Standard opening pressure:
                                     69.0 to 112.8 kPa (0.70 to 1.15 kgf/cm2, 10.0 to
                                     16.4 psi)
                                  HINT:
                                  Use the tester's maximum reading as the opening
                                  pressure. If the maximum reading is less than the
                                  minimum opening pressure above, replace the
                                  radiator cap.
                                   2GR-FE COOLING – COOLING FAN SYSTEM         CO–3
PARTS LOCATION
ECT SWITCH
ECM
CO
                                  - RDI H-FUSE
                                                                               A114588E01
     CO–4                                     2GR-FE COOLING – COOLING FAN SYSTEM
                                                             SYSTEM DIAGRAM
                                                             The electric cooling fan system controls the fan motors using
                                                             the Engine Coolant Temperature (ECT) switch, and turns the
                                                             fan relay on and off according to the ECT and the air
                                                             conditioner's operating condition.
                                 9                                                B9
                                                         B
                                 IR                                               Temperature sensor
            MPX1       14
                                                                                                             21
                                                                                                    B-W
                                                                                                             B45 THW
         Engine Room R/B & J/B                                                        1         2
                             8                    2 J/C 6                                                    28
                                          B                                       BR                W
                            IG                   A41    D46                                                  B45 E2
             MICON
                             4
                                                                      LG
                            IH
                                                                                                        A14
CO                                             Engine Room R/B & J/B
                                                                                                        RDI FAN CTRL
To IG1 Relay
                                                                                W (*2)
                                                         FL MAIN                B (*1)
                       Battery
                                                   *1: w/ Smart Entry System                            F                      C
                                                  *2: w/o Smart Entry System
     C                                                                                                                             A128111E01
                             2GR-FE COOLING – COOLING FAN SYSTEM                                          CO–5
                                                 ON-VEHICLE INSPECTION
                                                 HINT:
                                                 The cooling fan may rotate when the ignition switch is turned
                                                 from on (IG) to on (ACC), or from on (ACC) to on (IG). This is
                                                 normal.
                                                 1.   CHECK COOLING FAN OPERATION WITH LOW
                                                      TEMPERATURE
                                                      (a) Turn the ignition switch on (IG).
                                                      (b) Check that the cooling fan stops.
                                                          If not, check the cooling fan relay and ECT
                                                          switches, and check for disconnected connectors or
                                                          wire breaks between the cooling fan relay and ECT
                                                          switches.
                                                      (c) Disconnect the ECT switch No.1 connector.
                                                      (d) Connect the terminals on the ECT switch No.1
                                                          connector.
                                                      (e) Check that the No.1 cooling fan rotates at a high
                                                          speed.
                                                          If not, check the No. 1 cooling fan relay and No.1
                                                          cooling fan.
                                                      (f) Reconnect the ECT switch No.1 connector.
                                                      (g) Disconnect the ECT switch No.2 connector.
                                                      (h) Ground the terminal on the ECT switch No.2 wire
                                                          harness side connector.
                                                                                                                   CO
                                                      (i) Check that the No.1 and No.2 cooling fans rotate at
                                                          a low speed.
                                                          If not, check the No.2 cooling fan relay, No.3 cooling
                                                          fan relay and No.2 cooling fan.
                                                      (j) Reconnect the ECT switch No.2 connector.
                                                 2.   CHECK COOLING FUN
                                                      (a) Disconnect the cooling fan connector.
                                                      (b) Connect battery and ammeter to the cooling fan
                                                          connector.
                                                      (c) Check that the cooling fan rotates smoothly, and
                                                          check the reading on the ammeter.
                                                          Standard amperage:
                                                             8.0 to 12.0 A at 20°C (68°F)
                                                          If not, replace the cooling fan.
                                                      (d) Reconnect the cooling fan connector.
                                                 INSPECTION
                         5
                1                   2            1.   INSPECT RELAY
                                                      (a) Check the resistance of the relay.
    3       5
    1       2
                3
C A128114E01
        Resistance
                Tester Connection                                            Specified Condition
                       3-5                                                     10 kΩ or higher
     CO–6                2GR-FE COOLING – COOLING FAN SYSTEM
CO
                                 2GR-FE COOLING – COOLANT                                       CO–7
                                      COOLANT
                                      REPLACEMENT
                                      1.   DRAIN ENGINE COOLANT
                                           (a) Remove the radiator cap.
                                               CAUTION:
                                               Do not remove the radiator cap while the engine
                                               and radiator are still hot. Pressurized, hot
                                               engine coolant and steam may be released and
                                               cause serious burns.
                                           (b) Drain engine coolant by loosening the radiator drain
                                               cock plug and the engine's cylinder block drain cock
                                               plug.
                                               HINT:
                                               Engine coolant inside the radiator is drained from
                                               the drain hole located on the bottom of the engine
                                               under cover.
                                           (c) Tighten the cylinder block drain cock plugs.
Radiator Cap
                                                                                                            CO
                                                                     Cylinder Block Drain Cock Plug
Cylinder Block Drain Cock Plug
A128117E01
WATER PUMP
2GR-FE COOLING
ENGINE
COMPONENTS
CO
   ENGINE UNDER
   COVER RH
                                                                      A114557E01
     CO–10                      2GR-FE COOLING – WATER PUMP
                                                       ENGINE MOVING
                                                       CONTROL ROD
                                                  ENGINE MOUNTING
                                                  CONTROL BRACKET
CO
                                                                       A114559E01
2GR-FE COOLING – WATER PUMP                       CO–11
CO
                                                  A118978E01
     CO–12                 2GR-FE COOLING – WATER PUMP
CO
                                                         A114566E01
2GR-FE COOLING – WATER PUMP   CO–13
CO
                              A114561E01
     CO–14                       2GR-FE COOLING – WATER PUMP
     IDLER PULLEY
CO   SUB-ASSEMBLY NO.2
(RR SIDE)
                                     IDLER PULLEY
                                     SUB-ASSEMBLY NO.2
(FR SIDE)
                                                               A114563E01
            2GR-FE COOLING – WATER PUMP   CO–15
CRANKSHAFT PULLEY
CO
                                          A114567E01
     CO–16                2GR-FE COOLING – WATER PUMP
                                       REMOVAL
                                       1.   DRAIN ENGINE COOLANT
                                       2.   REMOVE FRONT WHEEL RH
                                       3.   REMOVE ENGINE UNDER COVER RH
                                       4.   REMOVE V-BANK COVER SUB-ASSEMBLY
                                       5.   REMOVE ENGINE MOVING CONTROL ROD
                                       6.   REMOVE ENGINE MOUNTING CONTROL BRACKET
                                       7.   REMOVE ENGINE MOUNTING BRACKET FRONT
                                            NO.1 LH
                                       8.   REMOVE FAN AND GENERATOR V BELT
                                       9.   SEPARATE RADIATOR HOSE OUTLET
                                            (a) Separate the radiator hose outlet.
CO A128118
A128119E05
                             A128120
      2GR-FE COOLING – WATER PUMP                                      CO–17
A128112E03
A094887
                       (b) Remove the bolt, idler pulley cover plate No.2 and
                           idler pulley sub-assembly No.2.
                                                                                CO
A128121
A128113
        A094889
     CO–18                                2GR-FE COOLING – WATER PUMP
                                                       INSPECTION
                                                       1.   INSPECT WATER PUMP ASSEMBLY
                                                            (a) Visually check, the drain hole for coolant leakage.
                                                            (b) Turn the pulley, and check that the water pump
                                                                bearing moves smoothly and noiselessly.
                                                                If the bearing moves roughly or noisily, replace the
                                                                water pump.
A096655
                                      B                INSTALLATION
                                                       1.   INSTALL WATER PUMP ASSEMBLY
          B   C                   B B
      A               A                       A             (a) Install a new water pump gasket and the water
                                                                pump assembly with the 16 bolts.
                                                                Torque: Bolt A
                                                                          21 N*m (214 kgf*cm, 15 ft.*lbf)
                                                                          Bolts B and C
                                  B             A
                  C                   A
                                                                          9.1 N*m (93 kgf*cm, 81 in.*lbf)
      A   A
                          A   A           A128115E01
                                                                NOTICE:
                                                                • Make sure that there is no oil on the threads
                                                                   of the A bolts.
                                                                • Be sure to replace the 2 C bolts with new
CO                                                                 ones or reuse them after applying adhesive
                                                                   1344.
                                                                   Adhesive:
                                                                     Part No. 08833-00080, THREE BOND 1344 or
                                                                     equivalent
                                                       2.   INSTALL VANE PUMP ASSEMBLY
                                                       3.   INSTALL IDLER PULLEY SUB-ASSEMBLY NO.2
                                                            (a) Install the idler pulley with the bolt.
                                                                NOTICE:
                                                                Be careful when tightening the bolt because it is
                                                                left-hand threaded.
                                                                Torque: 43 N*m (438 kgf*cm, 32 ft.*lbf)
A128116
                                                            (b) Install the idler pulley cover plate No.2 and idler
                                                                pulley sub-assembly No.2 with the bolt.
                                                                Torque: 43 N*m (438 kgf*cm, 32 ft.*lbf)
                                            A128121
                   2GR-FE COOLING – WATER PUMP                                           CO–19
                                     (c) Install the idler pulley cover plate No.2 and idler
                                         pulley sub-assembly No.2 with the bolt.
                                         Torque: 43 N*m (438 kgf*cm, 32 ft.*lbf)
A094887
A128122
                                     (b) Install the water inlet with the 2 bolts and nut.
                                         Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)
      Water Hose                         NOTICE:
                                         Be careful not to allow the O-ring to get caught
                                         between the parts.
                                     (c) Install the water hose.
CO
                                      2GR-FE COOLING – THERMOSTAT   CO–21
THERMOSTAT
2GR-FE COOLING
ENGINE
COMPONENTS
                 V-BANK COVER SUB-ASSEMBLY
CO
                                                                    A114557E02
     CO–22                      2GR-FE COOLING – THERMOSTAT
                                                     ENGINE MOVING
                                                     CONTROL ROD
                        FAN AND GENERATOR V BELT
                                                   ENGINE MOUNTING
                                                   CONTROL BRACKET
CO
                                                                     A114559E08
                    2GR-FE COOLING – THERMOSTAT   CO–23
IDLER PULLEY
SUB-ASSEMBLY NO.2                                              CO
    (RR SIDE)
                                                  A114563E02
     CO–24   2GR-FE COOLING – THERMOSTAT
CO
                                                               A118978E02
              2GR-FE COOLING – THERMOSTAT   CO–25
THERMOSTAT
WATER INLET
CO
                                            A114566E02
     CO–26            2GR-FE COOLING – THERMOSTAT
                                   REMOVAL
                                   1.   DRAIN ENGINE COOLANT
                                   2.   REMOVE V-BANK COVER SUB-ASSEMBLY
                                   3.   REMOVE ENGINE MOVING CONTROL ROD
                                   4.   REMOVE ENGINE MOUNTING CONTROL BRACKET
                                   5.   REMOVE ENGINE MOUNTING BRACKET FRONT
                                        NO.1 LH
                                   6.   REMOVE FAN AND GENERATOR V BELT
                                   7.   REMOVE IDLER PULLEY SUB-ASSEMBLY NO.2
                                   8.   SEPARATE RADIATOR HOSE OUTLET
                                   9.   REMOVE WATER INLET
                                        (a) Remove the 2 bolts and water inlet.
                                   10. REMOVE THERMOSTAT
                                   INSPECTION
                                   1.   INSPECT THERMOSTAT
                                        (a) Inspect the thermostat.
                                            HINT:
                                            The thermostat is numbered with the valve opening
CO                                          temperature.
P013560
P000436
     RADIATOR
     2GR-FE COOLING
     ENGINE
     COMPONENTS
                                                 7.0(71, 62 in.*lbf)               7.0(71, 62 in.*lbf)             5.0 (51, 44 in.*lbf)
              RADIATOR SUPPORT
              CUSHION
                                                                                  7.0 (71, 62 in.*lbf)
              N*m (kgf*cm, ft.*lbf) : Specified torque           OIL COOLER OUTLET TUBE NO.1
                                                                                                                                            A130844E02
                                      2GR-FE COOLING – RADIATOR                                                            CO–29
O-RING
            CORE
                                                                       COOLER PIPE
                                                            O-RING           15 (150, 11)
                                                                                                    8.3 (85, 73 in.*lbf)
O-RING
                                                         OIL COOLER
                                                         ASSEMBLY
                                                                                                                                        CO
RADIATOR TANK LOWER                                                                           O-RING
                                                                      DRAIN PLUG
N*m (kgf*cm, ft.*lbf) : Specified torque
                                                ON-VEHICLE CLEANING
                                                1.   INSPECT FINS BLOCKAGE
                                                     (a) If the fins are clogged, wash them with water or a
                                                         steam cleaner. Dry with compressed air.
                                                         NOTICE:
                                                         • If the distance between the steam cleaner and
                                                             the core is too close, the fins may become
                                                             damaged. Keep the following injection
                                      A073603
                                                             distance.
                                                             Standard
                                                        Injection Distance                         Injection Pressures
                                                                                                    2,942 to 4,903 kPa
                                                        300 mm (11.81 in.)
                                                                                            (30 to 50 kg/cm2, 427 to 711 psi)
                                                                                                    4,903 to 7,845 kPa
                                                        500 mm (19.69 in.)
                                                                                            (50 to 80 kg/cm2, 711 to 1,138 psi)
                       REMOVAL
                       1.   DRAIN ENGINE COOLANT
                       2.   REMOVE BATTERY
                       3.   REMOVE AIR CLEANER INLET NO.2
                       4.   REMOVE AIR CLEANER INLET NO.1
                       5.   SEPARATE RADIATOR RESERVE TANK HOSE OR
                            PIPE
                            (a) Separate radiator reserve tank hose from the
                                radiator assembly.
A128125
CO
A128126
A128127
             A128128
2GR-FE COOLING – RADIATOR                                          CO–31
A128129
A128130
A128131
A128132
A128133
     CO–32                               2GR-FE COOLING – RADIATOR
A128134
      Guide
                                       Guide
           : Snap Fit                  A128136E01
                                     2GR-FE COOLING – RADIATOR                                           CO–33
                                                DISASSEMBLY
                                                1.   REMOVE DRAIN PLUG
                                                     (a) Remove the drain plug.
                                                     (b) Remove the O-ring.
                                                2.   ASSEMBLE SST
                                                     SST 09230-01010 (09231-01010, 09231-01030)
                                                     (a) Install the claw to the overhaul handle, inserting it in
                      Part A                             the hole in part A as shown in the illustration.
                                                     (b) While gripping the handle, adjust the stopper bolt so
                                                         that dimension B is as shown in the illustration.
Dimension B                                              Dimension B:
               SST      Stopper Bolt                        0.2 to 0.3 mm (0.008 to 0.012 in.)
                                                         NOTICE:
                                                         If the stopper bolt is not adjusted, the claw may
 Claw                                                    be damaged.
                     Overhaul Handle
                                 A087082E10
A128138E01
                                      A128139
     CO–34                                         2GR-FE COOLING – RADIATOR
                                      Lock plate
                                                           INSPECTION
          Lock plate                                       1.   INSPECT LOCK PLATE
                                                                (a) Inspect the lock plate for damage.
                                                                    HINT:
                                                                    • If the sides of the lock plate groove are
                                                                       deformed, reassembly of the tank will be
                                                                       impossible. Therefore, first correct the lock plate
                                                                       groove's shape with pliers or a similar object, if
                                    Core
                                              A087087E02
                                                                       necessary.
                                                                    • Water leakage will result if the bottom of the lock
                                                                       plate groove is damaged or dented. Repair or
                                                                       replace if necessary.
                                                                    NOTICE:
                                                                    The radiator can only be recaulked 2 times. After
                                                                    the 2nd time, the radiator core must be replaced.
                                                           REASSEMBLY
                        (b)   (e)                          1.   INSTALL OIL COOLER ASSEMBLY
        Oil Cooler                                              (a) Clean the O-rings contact surface of the lower tank
                                       (f)                          and oil cooler.
                                                   (d)          (b) Install 2 new O-rings to the oil cooler.
                                             (d)
                                                                (c) Install the oil cooler to the lower tank.
       Lower
                                      (b)                       (d) Install the plate washer and nut.
       Tank
CO                                                                  Torque: 8.3 N*m (85 kgf*cm, 73 in.*lbf)
                                                                (e) Install the cooler pipe.
                                              A128140E01
                                                                    Torque: 15 N*m (150 kgf*cm, 11 ft.*lbf)
                                                                (f) Install the screw.
                                                           2.   INSTALL RADIATOR TANK UPPER AND TANK
                                                                LOWER
                                                                (a) After checking that there are no foreign objects in
                                                                    the lock plate groove, install a new O-ring without
                       O Normal X Twisted                           twisting it.
                                                                    HINT:
                        O-Ring                                      When cleaning the lock plate groove, lightly rub it
                                                                    with sand paper without scratching it.
                                     X Twisted
                                              A087088E05
                                              A128141E01
                                             2GR-FE COOLING – RADIATOR                                          CO–35
A129608E01
                                                             (b) Check the lock plate height (H) after completing the
                                                                 caulking.
                                                                 Plate height (H):
                                                                    7.40 to 7.80 mm (0.2913 to 0.3071 in.)
                                                                 If not within the specified height, adjust the stopper
                                                                 bolt of the handle and caulk again.
                                       H                5.   INSTALL DRAIN PLUG
                                                             (a) Install a new O-ring to the drain plug.
                                                             (b) Install the drain plug.
                                           A128142E01
                                                      INSTALLATION
                                                      1.   INSTALL FAN MOTOR WITH MOTOR
                                                           (a) Install the fan assembly w/ motor to the radiator with
                                                               the 2 guides at the bottom and 3 snap fits on the
                                                               top.
     Guide
                                         Guide
             : Snap Fit                  A129455E01
A129457
                                            A128133
2GR-FE COOLING – RADIATOR                                           CO–37
A128132
A128131
               (c) Install the hood lock nut cap to the hood lock
                   assembly.
                                                                            CO
A128130
A128129
A128128
     CO–38   2GR-FE COOLING – RADIATOR
A128127
A128126