control INFINITI FX35 2004 Service Manual

BRC-60
[VDC/TCS/ABS]
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)
Revision: 2004 November 2004 FX35/FX45
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)PFP:47660
Removal and InstallationAFS001Z5
REMOVAL
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Loosen brake tube flare nuts, then remove brake tubes from ABS actuator and electric unit (control unit).
3. Remove LH side fender protector. Refer to EI-25, "
FENDER PROTECTOR" .
4. Remove ABS actuator and electric unit (control unit) mounting nuts.
5. Remove ABS actuator and electric unit (control unit) from vehicle.
CAUTION:
Be careful of the following when removing ABS actuator and electric unit (control unit).

If the part number on the part number label (pasted on actuator upper surface) is the same, ABS
actuator and electric unit (control unit) cannot be used on another vehicle.
If it is used on another vehicle, ABS warning lamp, SLIP indicator lamp and VDC OFF indicator
lamp may turn ON or VDC/TCS/ABS may not operate normally.
When replacing ABS actuator and electric unit (control unit), must use new service parts.

Before servicing, disconnect battery cables.

To remove brake tube, use a flare nut wrench to prevent flare nuts and brake tube from being dam-
aged. To install, use a flare nut torque wrench (commercial service tool) and tighten to the speci-
fied torque.

Do not apply excessive impact to actuator, such as dropping it.

Do not remove and install ABS actuator and electric unit (control unit) by holding harness.
INSTALLATION
To install, follow procedure for removal in reverse order.
CAUTION:
Be careful of the following when installing ABS actuator and electric unit (control unit).

Tighten the mounting bolts and nuts to the specified torque.

After the work, bleed air from brake piping. Refer to BR-10, "Bleeding Brake System" .
PFIA0601E

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)
BRC-61
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Revision: 2004 November 2004 FX35/FX45

After installing vehicle harness connector in the actuator, make sure connector is securely locked.

When replacing ABS actuator and electric unit (control unit), calibrate Steering angle sensor neu-
tral position and Decel G sensor. Refer to BRC-6, "
ON-VEHICLE SERVICE" .
NOTE:

After performing above works, calibrate decel G-sensor (AWD model). Refer to BRC-6, "Calibration of
Decel G-sensor (AWD Model)" .

In the case that ABS actuator and electric unit (control unit) are replaced, make sure to adjust position of
steering angle sensor. Refer to BRC-6, "
Adjustment of Steering Angle Sensor Neutral Position" .

CO-2Revision: 2004 November 2004 FX35/FX45 COOLING SYSTEM .................................................. 34
Cooling Circuit ........................................................ 34
System Drawing ..................................................... 35
ENGINE COOLANT .................................................. 36
Inspection ............................................................... 36
LEVEL CHECK .................................................... 36
LEAK CHECK ...................................................... 36
Changing Engine Coolant ....................................... 36
DRAINING ENGINE COOLANT .......................... 36
REFILLING ENGINE COOLANT ......................... 37
FLUSHING COOLING SYSTEM ......................... 38
RADIATOR ................................................................ 39
Removal and Installation ........................................ 39
REMOVAL ........................................................... 39
INSTALLATION .................................................... 41
INSPECTION AFTER INSTALLATION ................ 41
Checking Radiator Cap .......................................... 41
Checking Radiator .................................................. 41
RADIATOR (ALUMINUM TYPE) ............................... 43
Disassembly and Assembly .................................... 43
PREPARATION ................................................... 43
DISASSEMBLY ................................................... 43
ASSEMBLY ......................................................... 44
INSPECTION ....................................................... 46
COOLING FAN .......................................................... 47
Removal and Installation (Crankshaft Driven Type) ... 47
REMOVAL ........................................................... 47
INSPECTION AFTER REMOVAL ........................ 47INSTALLATION .................................................... 47
Removal and Installation (Motor Driven Type) ........ 48
REMOVAL ............................................................ 48
INSTALLATION .................................................... 48
Disassembly and Assembly (Motor Driven Type) ... 48
DISASSEMBLY .................................................... 48
INSPECTION AFTER DISASSEMBLY ................ 48
ASSEMBLY .......................................................... 48
WATER PUMP ........................................................... 49
Removal and Installation ......................................... 49
REMOVAL ............................................................ 49
INSPECTION AFTER REMOVAL ........................ 49
INSTALLATION .................................................... 50
INSPECTION AFTER INSTALLATION ................ 50
THERMOSTAT AND WATER CONTROL VALVE ..... 51
Removal and Installation ......................................... 51
REMOVAL ............................................................ 51
INSPECTION AFTER REMOVAL ........................ 52
INSTALLATION .................................................... 52
INSPECTION AFTER INSTALLATION ................ 53
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 54
Standard and Limit .................................................. 54
ENGINE COOLANT CAPACITY (APPROXI-
MATE) .................................................................. 54
RADIATOR ........................................................... 54
THERMOSTAT ..................................................... 54
WATER CONTROL VALVE .................................. 54

ENGINE COOLANT
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Revision: 2004 November 2004 FX35/FX45
8. Repeat steps 3 through 6 two or more times with radiator cap installed until engine coolant level no longer
drops.
9. Check cooling system for leaks with engine running.
10. Warm up engine, and check for sound of engine coolant flow while running engine from idle up to 3,000
rpm with heater temperature controller set at several position between “COOL” and “WARM”.

Sound may be noticeable at heater unit.
11. Repeat step 10 three times.
12. If sound is heard, bleed air from cooling system by repeating step 3 through 6 until engine coolant level no
longer drops.

Clean excess engine coolant from engine.
FLUSHING COOLING SYSTEM
1. Fill radiator with water until water spills from the air relief hole, then close air relief plug. Fill radiator and
reservoir tank with water and reinstall radiator cap.
2. Run engine and warm it up to normal operating temperature.
3. Rev engine two or three times under no-load.
4. Stop engine and wait until it cools down.
5. Drain water from the system. Refer to CO-11, "
DRAINING ENGINE COOLANT" .
6. Repeat steps 1 through 5 until clear water begins to drain from radiator.

COOLING FAN
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Revision: 2004 November 2004 FX35/FX45
COOLING FANPFP:21140
Removal and Installation ABS005GR
REMOVAL
1. Remove air duct (inlet), power duct and air cleaner case assembly. Refer to EM-17, "AIR CLEANER AND
AIR DUCT" .
2. Disconnect fan motor connectors.
3. Remove radiator cooling fan assembly.
CAUTION:
Be careful not to damage or scratch on radiator core.
INSTALLATION
Note to the following, and install in the reverse order of removal.

Cooling fan is controlled by ECM. For details, refer to EC-472, "DTC P1217 ENGINE OVER TEMPERA-
TURE" .
Disassembly and Assembly ABS004WG
DISASSEMBLY
1. Remove fans from fan motors.
2. Remove fan motors from fan shroud.
ASSEMBLY
Install in the reverse order of disassembly.
1. Cooling fan 2. Fan shroud 3. Fan motor
SBIA0594E

CO-38
[VK45DE]
ENGINE COOLANT
Revision: 2004 November 2004 FX35/FX45
10. Warm up engine, and check for sound of engine coolant flow while running engine from idle up to 3,000
rpm with heater temperature controller set at several position between “COOL” and “WARM”.

Sound may be noticeable at heater unit.
11. Repeat step 10 three times.
12. If sound is heard, bleed air from cooling system by repeating steps 3 through 6 until engine coolant level
no longer drops.

Clean excess engine coolant from engine.
FLUSHING COOLING SYSTEM
1. Install reservoir tank, and radiator drain plug.
If cylinder block water drain plugs are removed, close and tighten them. Refer to EM-244, "
ASSEM-
BLY" .
2. Fill thermostat housing with water until water spills from the air relief hole, then close air relief plug. Fill
thermostat housing and reservoir tank with water and reinstall radiator cap.
3. Run engine and warm it up to normal operating temperature.
4. Rev engine two or three times under no-load.
5. Stop engine and wait until it cools down.
6. Drain water from the system. Refer to CO-36, "
DRAINING ENGINE COOLANT" .
7. Repeat steps 1 through 5 until clear water begins to drain from radiator.Radiator drain plug:
: 1.19 N·m (0.12 kg-m, 11 in-lb)

CO-48
[VK45DE]
COOLING FAN
Revision: 2004 November 2004 FX35/FX45
Removal and Installation (Motor Driven Type)ABS006JU
REMOVAL
1. Remove front grille. Refer to EI-23, "FRONT GRILLE" .
2. Disconnect harness connector from fan motor.
3. Remove cooling fan assembly.
CAUTION:
Do not damage or scratch A/C condenser when removed.
INSTALLATION
Install in the reverse order of removal.

Cooling fan is controlled by ECM. For details. Refer to EC-1142, "DTC P1217 ENGINE OVER TEMPER-
ATURE" .
Disassembly and Assembly (Motor Driven Type)ABS00A3O
DISASSEMBLY
1. Remove cooling fan from fan motor.
2. Remove fan motor from fan grille.
INSPECTION AFTER DISASSEMBLY
Cooling Fan
Inspect cooling fan for crack or unusual bend.

If anything is found, replace cooling fan.
ASSEMBLY
Assemble in the reverse order of disassembly.
1. Cooling fan 2. Fan grille 3. Fan motor
PBIC1666E

THERMOSTAT AND WATER CONTROL VALVE
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Revision: 2004 November 2004 FX35/FX45
THERMOSTAT AND WATER CONTROL VALVEPFP:21200
Removal and InstallationABS006JP
REMOVAL
1. Drain engine coolant from drain plugs on radiator and both side of cylinder block. Refer to CO-36, "Chang-
ing Engine Coolant" and EM-241, "DISASSEMBLY" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
2. Remove engine cover with power tool. Refer to EM-168, "
ENGINE ROOM COVER" .
3. Remove air duct (inlet). Refer to EM-172, "
AIR CLEANER AND AIR DUCT" .
4. Disconnect water suction hose from water inlet.
5. Remove water inlet and thermostat.
CAUTION:
Do not disassemble thermostat.
6. Remove intake manifolds (upper and lower). Refer to EM-174, "
INTAKE MANIFOLD" .
1. Water connector 2. O-ring 3. Rubber ring
4. Heater hose 5. Water control valve 6. Water outlet
7. Gasket 8. O-ring 9. Water outlet pipe
10. Thermostat housing 11. Radiator cap 12. Radiator hose (upper)
13. Thermostat 14. Rubber ring 15. Water inlet
16. Water suction hose 17. Water suction pipe 18. Radiator hose (lower)
19. Gasket 20. O-ring 21. Heater pipe
22. Heater hose 23. Water hose 24. Water hose
PBIC1561E

CO-52
[VK45DE]
THERMOSTAT AND WATER CONTROL VALVE
Revision: 2004 November 2004 FX35/FX45
7. Disconnect radiator hose (upper) and water hoses from thermostat housing.
8. Disconnect heater hoses from water outlet and heater pipe.
9. Remove thermostat housing, water outlet pipe, water connector, water control valve, water outlet and
heater pipe.
CAUTION:
Do not disassemble water control valve.
INSPECTION AFTER REMOVAL

Make sure that valves both in thermostat and water control valve are completely closing at normal tempar-
ature.

Place a thread so that it is caught in the valves of the thermostat
and water control valve. Immerse fully in a container filled with
water. Heat while stirring. (The example in the figure shows ther-
mostat.)

The valve opening temperature is the temperature at which the
valve opens and falls from the thread.

Continue heating. Check the maximum valve lift.
NOTE:
The maximum valve lift standard temperature for water control
valve is the reference value.

After checking the maximum valve lift, lower the water tempera-
ture and check the valve closing temperature.
Standard values:

If the malfunctioning condition, when closing valve at normal temperature, or measured values are out of
the standard, replace thermostat and/or water control valve.
INSTALLATION
Note to the following, and install in the reverse order of removal.
Thermostat and Water Control Valve

Install thermostat and water control valve with the whole circum-
ference of each flange part fit securely inside rubber ring. (The
example in the figure shows thermostat.)
SLC252B
Thermostat Water control valve
Valve opening temperature 80 - 84°C (176 - 183°F) 93.5 - 96.5°C (200 - 206°F)
Maximum valve liftMore than 10 mm/ 95°C
(0.39 in/ 203°F)More than 8 mm/ 108°C
(0.315 in/ 226°F)
Valve closing temperature 77°C (171°F) 90°C (194°F)
PBIC0157E

THERMOSTAT AND WATER CONTROL VALVE
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Revision: 2004 November 2004 FX35/FX45

Install thermostat with jiggle valve facing upwards. (The position
deviation may be within the range of ±10 degrees)

Install water control valve with the up-mark facing up and the
frame center part facing upwards. (The position deviation may
be within the range of ±10 degrees)
Water Outlet Pipe and Heater Pipe
First apply a neutral detergent to O-rings, then quickly insert the insertion parts of the water outlet pipe and
heater pipe into the installation holes.
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant using radiator cap tester adapter [SST: EG17650301 (J33984-A)] and
radiator cap tester (commercial service tool). Refer to CO-36, "
LEAK CHECK" .

Start and warm up engine. Visually make sure that there is no leaks of engine coolant.
PBIC0158E