Suzuki Grand Vitara JB416 / JB420 / JB419. Manual — part 181
1F-21 Engine Cooling System: For Diesel Engine Model
Installation
1) Install ECT sensor referring to “Engine Coolant
Temperature (ECT) Sensor Removal and
Installation: For Diesel Engine Model in Section 1C”,
if removed.
2) Install thermostat assembly (1) to cylinder head with
new gasket.
Tightening torque
Thermostat bolt (a): 8 N·m (0.8 kgf-m, 6.0 lb-ft)
3) Connect ECT sensor connector (3).
4) Connect water hoses (2) to thermostat assembly.
5) Install engine assembly referring to “Engine
Assembly Removal and Installation: For F9Q Engine
in Section 1D”.
Radiator Cooling Fan Motor On-Vehicle
Inspection
S6JB0A1626009
1) Check main and/or sub fan operation of radiator
cooling fans as follows.
a) Connect battery to main fan motor coupler
(coupler color: black) or sub fan motor coupler
(coupler color: gray) as shown in figure.
b) Check that radiator cooling fan rotates smoothly.
If any abnormality is found, replace fan motor.
Reference: Fan motor specified current at 12
V
Main fan operation: 10.9 – 14.4 A
Sub fan operation: 10.9 – 14.4 A
2
1
3
2
(a)
I5JB0B160006-01
1. Main fan motor
3. Battery
2. Sub fan motor
4. Fan motor coupler
I5JB0A161012-02
I5JB0A161011-01
Engine Cooling System: For Diesel Engine Model 1F-22
Radiator Cooling Fan Relay Inspection
S6JB0A1626010
1) Disconnect negative (–) cable at battery.
2) Remove radiator cooling fan relay No.1 (1), No.3 (2)
and/or No.2 (3) from relay box.
3) Check radiator cooling fan relay No.1 (1) and No.3
(2) as follows.
a) Check that there is no continuity between
terminals “C” and “D”. If there is continuity,
replace relay.
b) Connect battery positive (+) terminal to terminal
“B” of relay.
c) Connect battery negative (–) terminal to terminal
“A” of relay.
d) Check continuity between terminals “C” and “D”.
If there is no continuity, replace relay.
4) Check radiator cooling fan relay No.2 (3) as follows.
a) Check that there is no continuity between
terminals “G” and “H” and between terminals “G”
and “F”. If there is continuity, replace relay.
b) Check continuity between terminals “I” and “H”. If
there is continuity, replace relay.
c) Connect battery positive (+) terminal to terminal
“F” of relay.
d) Connect battery negative (–) terminal to terminal
“E” of relay.
e) Check continuity between terminals “G” and “H”.
If there is continuity, replace relay.
[A]: For radiator cooling fan relay No.1 and No.3
[B]: For radiator cooling fan relay No.2
1
2
3
“D”
“B”
“A”
“C”
“A”
“B”
“D”
“C”
“H”
“F”
“E”
“G”
“I”
“F”
“E”
“H”
“I”
“G”
[A]
[B]
I5JB0B160007-01
1F-23 Engine Cooling System: For Diesel Engine Model
Radiator Cooling Fan Assembly Removal and
Installation
S6JB0A1626011
Removal
1) Disconnect negative (–) cable at battery.
2) Disconnect connectors (1) of cooling fan motors.
3) With hose connected, detach P/S fluid reservoir with
reservoir bracket.
4) Remove air cleaner case and air cleaner suction
pipe (2).
5) Remove degassing tank (1) from radiator.
6) Remove cooling fan assembly.
CAUTION
!
Be sure not to damage condenser inlet pipe.
Installation
Reverse removal procedure for installation noting the
following.
• Refill cooling system referring to “Cooling System
Refilling: For Diesel Engine Model”.
• After installation, verify there is no coolant leakage at
each connection.
Radiator On-Vehicle Inspection and Cleaning
S6JB0A1626012
Inspection
Check radiator for leakage or damage. Straighten bent
fins, if any.
Cleaning
Clean frontal area of radiator cores.
Radiator Removal and Installation
S6JB0A1626013
Removal
1) Disconnect negative cable at battery.
2) Drain coolant referring to “Cooling System Draining:
3) Remove cooling fan assembly referring to “Radiator
Cooling Fan Assembly Removal and Installation: For
Diesel Engine Model”.
4) Remove radiator inlet and outlet hose from radiator.
5) Remove radiator from vehicle.
Installation
Reverse removal procedures, noting the following.
• Refill cooling system referring to “Cooling System
Refilling: For Diesel Engine Model”.
• After installation, verify there is no coolant leakage
each connection.
Water Pump Removal and Installation
S6JB0A1626020
Removal
1) Drain coolant referring to “Cooling System Draining:
2) Remove timing belt referring to “Timing Belt and Belt
Tensioner Removal and Installation: For F9Q Engine
in Section 1D”.
3) Remove water pump assembly (1).
1
I5JB0B160010-01
1
2
I5JB0B160012-01
I2RH01160014-01
Engine Cooling System: For Diesel Engine Model 1F-24
Installation
1) Remove oil and dust from sealing surface of cylinder
block and water pump.
2) Apply sealant to three bolts (1).
“A”: Thread lock cement (Loctite
FRENETANCH®)
3) Install water pump assembly (2) with new gasket.
Tightening torque
Water pump assembly bolt (a): 10 N·m (1.0 kgf-
m, 7.5 lb-ft)
4) Install timing belt referring to “Timing Belt and Belt
Tensioner Removal and Installation: For F9Q Engine
in Section 1D”.
5) Refill coolant referring to “Cooling System Refilling:
Water Pump Inspection
S6JB0A1626017
CAUTION
!
Do not disassemble water pump.
If any repair is required on pump, replace it
as assembly.
Rotate water pump by hand to check for smooth
operation. If pump does not rotate smoothly or makes
abnormal noise, replace it.
Specifications
Tightening Torque Specifications
S6JB0A1627001
Reference:
For the tightening torque of fastener not specified in this section, refer to “Fastener Information in Section 0A”.
Special Tools and Equipment
Recommended Service Material
S6JB0A1628001
I5JB0B160008-01
I5JB0B160009-01
I5JB0B160011-01
Fastening part
Tightening torque
Note
N
⋅m
kgf-m
lb-ft
Thermostat bolt
8
0.8
6.0
Water pump assembly bolt
10
1.0
7.5
Material
SUZUKI recommended product or Specification
Note
Thread lock cement
Loctite FRENETANCH®
—
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