Suzuki Grand Vitara JB419. Manual - part 38

Engine Electrical Devices:  1C-13

Turbocharger Electric Water Pump Removal 
and Installation

S5JB0B1306031

Removal

1) Disconnect negative cable at battery.
2) Drain cooling system referring to “Cooling System 

Components in Section 1F”.

3) Remove turbocharger electric water pump referring 

to “Cooling System Components in Section 1F”.

Installation
Reverse removal procedure for installation noting the 
following.
• Refill cooling system referring to “Cooling System 

Refilling in Section 1F”.

• Check cooling system leakage referring to “Engine 

Cooling System Inspection and Cleaning in Section 
1F”.

Turbocharger Electric Water Pump Inspection

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1) Connect 12 V battery terminals to turbocharger 

electric water pump terminals.

2) Check if turbocharger electric water pump operates 

smoothly without noise.

3) Check if ammeter indicates the specified current.

If measured current is out of specification, replace 
turbocharger electric water pump.

Turbocharger electric water pump current at 12 V
1 – 1.3 A at 23 

°C, 73 °F

4) Check pumping rate.

Turbocharger electric water pump pumping rate:
More than 850 L/h. (1796 US pt./h., 1496 Imp pt./
h.). at 23 

°C, 73 °F

Mass Air Flow (MAF) and Intake Air 
Temperature (IAT) Removal and Installation

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Removal

1) Disconnect negative cable at battery.
2) Disconnect MAF and IAT sensor connector (1).
3) Remove MAF and IAT sensor (2) from air cleaner 

(3).

Installation
Reverse removal procedure noting the followings.
• Tighten MAF and IAT sensor screws to specified 

torque.

Tightening torque
MAF and IAT sensor screw:  6 N·m (0.6 kgf-m, 4.5 
lb-ft)

• Tighten turbocharger inlet hose clamp to specified 

torque.

Tightening torque
Inlet hose clamp:  2.5 N·m (0.25 kgf-m, 2.0 lb-ft)

• Connect MAF and IAT sensor connector securely.

I5JB0B130017-01

1

2

3

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1C-14 Engine Electrical Devices: 

Mass Air Flow (MAF) and Intake Air 
Temperature (IAT) Sensor Inspection

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CAUTION

!

 

Do not heat up MAF and IAT sensor more 
than 100 

°C (212 °F). Otherwise, MAF and IAT 

sensor will be damaged.

 

• Check sensor O-ring (1) for damage and 

deterioration. Replace as necessary.

• Blow hot air to temperature sensing part (2) of MAF 

and IAT sensor (3) using hot air drier (4) and measure 
resistance between sensor terminals while heating air 
gradually.
If measured resistance does not show such 
characteristic as shown, replace MAF and IAT sensor.

Intake air temperature sensor resistance
10 

°C (50 °F): 3.55 – 3.87 kΩ

20 

°C (68 °F): 2.35 – 2.54 kΩ

30 

°C (86 °F): 1.61 – 1.73 kΩ

Inlet Throttle Valve Removal and Installation

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Refer to “Air intake Pipe Removal and Installation in 
Section 1D”.

Inlet Throttle Valve On-Vehicle Inspection

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CAUTION

!

 

Do not disassembly inlet throttle valve.

 

1) Connect SUZUKI scan tool to data link connector 

(DLC) with ignition switch OFF.

2) Check that no abnormality is detected in ECM.

Refer to “DTC Check in Section 1A”.

3) Turn ignition switch to ON position and select menu 

“Electronic Throttle Control” under “Miscellaneous 
test” (“MISC. TEST”) mode of SUZUKI scan tool. 
Follow the instructions indicated on the SUZUKI 
scan tool.

NOTE
For further details, refer to the operator’s 
manual for SUZUKI scan tool.

 

4) Confirm the inlet throttle valve operates five times. If 

inlet throttle valve does nit operate, replace inlet 
throttle valve referring to “Inlet Throttle Valve 
Removal and Installation”.

CAUTION

!

 

When replacing inlet throttle valve, perform 
“Initialize inlet throttle valve date” mode of 
SUZUKI scan tool referring to “Inlet Throttle 
Valve Data Initialization”.

 

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Engine Electrical Devices:  1C-15

Specifications

Tightening Torque Specifications

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Reference:
For the tightening torque of fastener not specified in this section, refer to “Fastener Information in Section 0A”.

Special Tools and Equipment

Special Tool

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Fastening part

Tightening torque

Note

N

⋅m

kgf-m

lb-ft

Glow plug

15

1.5 

11.0

)

Accelerator pedal position (APP) sensor 
assembly nut 

6.0 0.6 4.5

)

APP sensor assembly bracket nut

6.0

0.6 

4.3

)

Throttle body to EGR valve pipe

21

2.1 

15.5

)

CKP sensor bolt

11

1.1 

8.0

)

MAF and IAT sensor screw

6

0.6 

4.5

)

Inlet hose clamp

2.5

0.25 

2.0

)

09917–47011

SUZUKI scan tool

Vacuum pump gauge

—

)

 / )

This kit includes following 
items. 1. Tech 2, 2. PCMCIA 
card, 3. DLC cable, 4. SAE 
16/19 adapter, 5. Cigarette 
cable, 6. DLC loop back 
adapter, 7. Battery power 
cable, 8. RS232 cable, 9. 
RS232 adapter, 10. RS232 
loop back connector, 11. 
Storage case, 12.) / ) / ) / 
)

1D-1 Engine Mechanical: 

Engine

Engine Mechanical

Diagnostic Information and Procedures

Compression Check

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Check compression pressure on all 4 cylinders as 
follows:

1) Warm up engine to normal operating temperature.
2) Stop engine after warming up.

NOTE
After warming up engine, place transmission 
gear shift lever in “Neutral”, and set parking 
brake and block drive wheels.

 

3) Disconnect negative (–) cable at battery.
4) Disconnect ECM connectors (1) and pre-heating unit 

connector (2).

5) Remove all glow plugs referring to “Glow Plug 

Removal and Installation in Section 1C”.

6) Connect negative (–) cable at battery.
7) Install special tools into glow plug hole.

Special tool
(A):  09912–56540
(B):  09912–57821 
(C):  09918–26510

8) Disengage clutch (1) (to lighten starting load on 

engine) for M/T vehicle.

1

2

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(A)

(C)

(B)

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