Suzuki Grand Vitara JB416 / JB420 / JB419. Service manual - part 287

4E-40 ABS:

Front and Rear Wheel Speed Sensor On-Vehicle
Inspection

S6JB0A4506004

Output Voltage Inspection

1) Disconnect negative (–) cable from battery.
2) Hoist vehicle a little.
3) Disconnect wheel speed sensor connector.
4) Disconnect wheel speed grommet from vehicle body.
5) Set up measuring devices as shown in figure, the

resistance to 115

Ω and the power supply voltage to

12 V.

CAUTION

Incorrect voltage and/or wrong connection
cause damage to wheel speed sensor.

6) Measure voltage at resistance without wheel

rotation.
If voltage is out of specification, check sensor,
mating encoder and their installation conditions.

Voltage at the resistance (115

Ω) without wheel

rotation
680 to 960 mV

7) Measure voltage at resistance with wheel rotation

and confirm voltage alternately changes between
high and low voltages.
If voltage does not change with wheel rotation, check
sensor, mating encoder and their installation
conditions.

Voltage at the resistance (115

Ω) with wheel

rotation
High voltage “a”: 1360 to 1930 mV
Low voltage “b”: 680 to 960 mV

Reference
When using oscilloscope for this check, check if peak-to-
peak voltage and waveform meet specification.

Peak-to-peak Voltage at the resistance (115

Ω) with

wheel rotation
High voltage “a”: 1360 to 1930 mV
Low voltage “b”: 680 to 960 mV

1. Wheel speed sensor connector

4. “BLK” wire terminal

2. Resistance (115

Ω)

5. Power supply (12 V)

3. “WHT” wire terminal

I5JB0A450026-03

[A]: Voltage

[B]: Time

I5JB0A450027-01

I5JB0A450028-02

ABS: 4E-41

Front Wheel Speed Sensor Removal and
Installation

S6JB0A4506005

Removal

1) Disconnect negative (–) cable from battery.
2) Disconnect front wheel speed sensor coupler (1).
3) Hoist vehicle and remove wheel.
4) Remove harness clamp, clamp bolts (2) and

grommet (3).

5) Remove front wheel speed sensor (4) from knuckle.

CAUTION

• Do not pull wire harness when removing

front wheel speed sensor.

• Do not cause damage to surface of front

wheel speed sensor and do not allow dust,
etc. to enter its installation hole.

Installation

1) Check that no foreign material is attached to sensor

(1) and mating encoder (2).

2) Install it by reversing removal procedure.

Tightening torque
Front wheel speed sensor bolt (a): 11 N·m (1.1
kgf-m, 8.0 lb-ft)
Front wheel speed sensor harness clamp bolt
(b): 11 N·m (1.1 kgf-m, 8.0 lb-ft)

CAUTION

Do not pull or twist wire harness more than
necessary when installing front wheel speed
sensor.

3) Check that there is no clearance between sensor

and knuckle.

Front and Rear Wheel Speed Sensor Inspection

S6JB0A4506006

Check sensor for damage.
If any malcondition is found, replace.

Rear Wheel Speed Sensor Removal and
Installation

S6JB0A4506008

Removal

1) Disconnect negative (–) cable from battery.
2) Disconnect rear wheel speed sensor coupler (1).
3) Hoist vehicle and remove wheel.
4) Remove harness clamp (4) and clamp bolts (2).

I5JB0A450029-01

[A]: OK

[B]: NG

[A]

[B]

(a)

(b)

I5JB0A450030-01

I5JB0A450031-01

4E-42 ABS:

5) Remove rear wheel speed sensor (3) from knuckle.

CAUTION

• Do not pull wire harness when removing

rear wheel speed sensor.

• Do not cause damage to surface of rear

wheel speed sensor and do not allow dust,
etc. to enter its installation hole.

Installation
Reverse removal procedure for installation noting the
following.
• Check that no foreign material is attached to sensor

(1) and mating encoder (2).

• Be sure to install wheel speed sensor (1) and its bolt

at the correct (upper) position as shown in figure.
Tighten sensor bolt and harness clamp bolts to
specified torque.

Tightening torque
Rear wheel speed sensor bolt (a): 11 N·m (1.1 kgf-
m, 8.0 lb-ft)
Rear wheel speed sensor harness clamp bolt
(b): 11 N·m (1.1 kgf-m, 8.0 lb-ft)

CAUTION

Do not pull or twist wire harness more than
necessary when installing rear wheel speed
sensor.

• Check that there is no clearance between sensor and

brake back plate.

Front Wheel Encoder On-Vehicle Inspection

S6JB0A4506010

Before inspect front wheel encoder, remove front drive
shaft or front wheel spindle referring to “Front Drive Shaft
Assembly Removal and Installation: Front in Section 3A”
or “Front Wheel Hub Assembly Removal and Installation
in Section 2B”.
• Check encoder (1) for being crack, damaged or

deformed.

• Turn wheel and check if encoder rotation is free from

eccentricity and looseness.

• Check that no foreign material is attached.
If any faulty is found, repair or replace. Refer to “Front
Wheel Hub Assembly Removal and Installation in
Section 2B”.

I5JB0A450032-02

[A]: OK

[B]: NG

[A]

[B]

(a)

(b)

I5JB0A450033-01

I5JB0A450034-01

ABS: 4E-43

Front Wheel Encoder Removal and Installation

S6JB0A4506011

CAUTION

Front wheel encoder is included in front
wheel hub assembly. If front wheel encoder
needs to replaced, replace it as a front wheel
hub assembly.

For removal and installation of front wheel hub
assembly, referring to “Front Wheel Hub Assembly
Removal and Installation in Section 2B”.

Rear Wheel Encoder On-Vehicle Inspection

S6JB0A4506012

Before inspect rear wheel encoder, remove rear drive
shaft referring to “Rear Drive Shaft Disassembly and
Assembly: Rear in Section 3A”.
• Check encoder (1) for being crack, damaged or

deformed.

• Turn wheel and check if encoder rotation is free from

eccentricity and looseness.

• Check that no foreign material is attached.

If any faulty is found, repair or replace. Refer to “Rear
Wheel Hub Assembly Removal and Installation in
Section 2C”.

Rear Wheel Encoder Removal and Installation

S6JB0A4506013

CAUTION

Rear wheel encoder is included in rear wheel
hub assembly. If rear wheel encoder needs to
replaced, replace it as a rear wheel hub
assembly.

For removal and installation of front wheel hub
assembly, referring to “Rear Wheel Hub Assembly
Removal and Installation in Section 2C”.

I5JB0A450035-01

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