Suzuki Grand Vitara JB416 / JB420 / JB419. Manual — part 113

1C-12 Engine Electrical Devices: For Petrol Engine Model

Crankshaft Position (CKP) Sensor Removal and
Installation

S6JB0A1316015

For J20 Engine
Removal

1) Remove transmission assembly from vehicle

referring to “Automatic Transmission Assembly
Dismounting and Remounting in Section 5A” or
“Manual Transmission Assembly Dismounting and
Remounting: For Petrol Engine Model in Section
5B”“Manual Transmission Assembly Dismounting
and Remounting: For Petrol Engine Model in Section
5B”.

2) Remove drive plate or flywheel from crankshaft.
3) Disconnect connector from crankshaft position

sensor.

4) Remove crankshaft position sensor (1) from cylinder

block (2).

Installation
Reverse removal procedure noting the following.
• Apply engine oil to O-ring of sensor.
• Tighten CKP sensor bolt to specified torque.

Tightening torque
CKP sensor bolt (a): 11 N·m (1.1 kgf-m, 8.0 lb-ft)

• Connect connector and fix wire harness with clamp

securely.

For M16 Engine
Removal

1) Disconnect negative cable at battery.
2) Remove generator drive belt, loosen pivot bolt and

move generator outward.

3) Disconnect connector from crankshaft position

sensor.

4) Remove crankshaft position sensor (1) from cylinder

block.

Installation

1) Install crankshaft position sensor to cylinder block.

Tighten CKP sensor bolt to specified torque.

Tightening torque
CKP sensor bolt (a): 10 N·m (1.0 kgf-m, 7.5 lb-ft)

2) Connect connector to CKP sensor securely.
3) Adjust generator drive belt tension referring to

“Water Pump and Generator Drive Belt Tension
Inspection and Adjustment (For M16 Engine): For
Petrol Engine Model in Section 1J”.

4) Connect negative cable to battery.

I2RH01130021-01

I2RH0B130012-01

(a)

I5JB0A130028-01

Engine Electrical Devices: For Petrol Engine Model 1C-13

Crankshaft Position (CKP) Sensor Inspection

S6JB0A1316016

For J20 Engine
Waveform Check
Using oscilloscope, check that CKP sensor signal is
outputted properly referring to “Reference waveform
No.20” and “Reference waveform No.21” of “Inspection
of ECM and Its Circuits: For Petrol Engine Model in
Section 1A”.
If sensor signal is outputted properly, CKP sensor is in
good condition.

Visual check
• Check that O-ring is free from damage.
• Check that end face of sensor and signal plate tooth

are free from any metal particles and damage.

Resistance check
Measure resistance between “1” and “2” terminals of
CKP sensor.

CKP sensor resistance
480 – 660

Ω at 20 °C, 68 °F

If measured resistance is out of specified value, replace
CKP sensor.

For M16 Engine
Visual check
• Check that O-ring is free from damage.
• Check that end face of sensor and signal pulley tooth

are free from any metal particles and damage.

Performance check

1) Remove metal particles on end face of CKP sensor,

if any.

2) Arrange 12 V battery (1) and connect its positive

terminal to “Vin” terminal (2) and negative terminal to
“Ground” terminal (3) of sensor. Then using
ohmmeter, measure resistance between “Vout”
terminal (4) of sensor and negative terminal of
battery by passing magnetic substance (iron) (5)
while keeping approximately 1 mm (0.03 in.) gap
with respect to end face of CKP sensor.
If resistance does not vary as specified below,
replace CKP sensor.

CKP sensor resistance
Resistance varies from less than 220

Ω (ON) to

infinity (OFF) or from infinity (OFF) to less than 220

Ω (ON)

I5JB0A130003-01

1

2

I5JB0A130004-01

I3RB0A130006-01

I4RS0B130017-01

1C-14 Engine Electrical Devices: For Petrol Engine Model

Knock Sensor Removal and Installation

S6JB0A1316017

Removal

1) Disconnect negative cable at battery.
2) Hoist vehicle.
3) For M16 engine, remove starting motor referring to

“Starting Motor Dismounting and Remounting: For
Petrol Engine Model in Section 1I”.

4) Disconnect knock sensor connector (1).
5) Remove knock sensor (2) from cylinder block.

Installation
Reverse removal procedure for installation.

Tightening torque
Knock sensor (a): 22 N·m (2.2 kgf-m, 16.0 lb-ft)

Control Relay Inspection

S6JB0A1316018

Control Relay

1) Disconnect negative cable at battery.
2) Remove main relay (1), fuel pump relay (3), starting

motor control relay (2), throttle actuator control relay
(4) and HO2S heater relay (5) (for M16 engine) from
fuse box No.2 (6) and/or relay box (7).

3) Check that there is no continuity between terminal

“C” and “D”. If there is continuity, replace relay.

4) Connect battery positive (+) terminal to terminal “B”

of relay. Connect battery negative (–) terminal to
terminal “A” of relay. Check for continuity between
terminal “C” and “D”. If there is no continuity when
relay is connected to the battery, replace relay.

2, (a)

1

I5JB0A130029-02

[A]: For J20 engine
[B]: For M16 engine

8. Integration relay No.2

"D"

"B"

"A"

"C"

[A]

[B]

3

1

8

3

1

5

2

2

6

6

4

7

I5JB0A130030-02

Engine Electrical Devices: For Petrol Engine Model 1C-15

Integration Relay No.2 (For J20 Engine)

1) Disconnect negative cable at battery.
2) Remove included in integration relay No.2 (1) from

fuse box No.2 (2).

3) Check that there is no continuity between terminals

“E41-1” and “E37-8” of relay.
If there is continuity, replace relay.

4) Connect battery positive (+) terminal to “E37-7”

terminal of relay. Connect battery negative (–)
terminal to “E37-6” terminal of relay. Check for
continuity between terminal “E41-1” and “E37-8”. If
there is no continuity when relay is connected to the
battery, replace integration relay No.2.

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

S6JB0A1316019

NOTE
Before performed this inspection, be sure to
read the “Precautions of ECM Circuit
Inspection: For Petrol Engine Model in
Section 1A”.

1) Disconnect MAF and IAT sensor connector.
2) Connect voltmeter to “BLU/BLK” wire terminal (2) of

MAF and IAT sensor connector (1) disconnected and
ground.

3) Turn ON ignition switch and check that voltage is

battery voltage.
If not, check if wire harness is open or connection is
poor.

4) Turn OFF ignition switch and connect connector to

MAF and IAT sensor.

5) Connect special tool between ECM and ECM

connector referring to “Inspection of ECM and Its
Circuits: For Petrol Engine Model in Section 1A”.

[A]: A/T relay
[B]: HO2S heater relay

[C]: Compressor relay

2

1

I5JB0A130031-02

1

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

E41

E41

E41

E37

E38

“E37-6”

[A]

[B]

[C]

“E41-1”

“E37-8”

“E37-7”

I5JB0A130032-02

I3RB0A130009-01