Suzuki Grand Vitara JB419. Service 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

S5JB0B1306032

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

S5JB0B1306033

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

I5JB0B130018-01

1C-14 Engine Electrical Devices:

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

S5JB0B1306034

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

S5JB0B1306035

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

Inlet Throttle Valve On-Vehicle Inspection

S5JB0B1306036

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”.

I5JB0B130019-02

Engine Electrical Devices: 1C-15

Specifications

Tightening Torque Specifications

S5JB0B1307001

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

S5JB0B1308001

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

S5JB0B1404001

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

I5JB0B140001-01

(A)

(C)

(B)

I5JB0B140002-01

I4RH0A140057-01