2004 SUZUKI GRAND VITARA lamp

YH4
GRAND
VITARA
5E1-16 ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL)
-1. Main fuse
-2. Ignition switch
-3. Circuit fuse for IG
-4. ªABSº warning lamp
-5. ABS hydraulic unit / control
module assembly
5-1. Fail-safe relay
5-2. To solenoid valves and
pump motor relay
(ABS hydraulic unit)
-6. Diagnosis connector
(Black connector)
6-1. Diag. switch terminal
6-2. Diag. ground terminal
-7. Combination meter
7-1. ABS lamp driver module
-8. ABS hydraulic unit/
control module connector
of harness
-9. EBD warning lamp
(Brake warning lamp)
-10. Parking brake switch
-11. Brake fluid level switch
TABLE ± A ªABSº WARNING LAMP CIRCUIT CHECK ± LAMP DOES NOT
COME ªONº AT IGNITION SWITCH ON
CIRCUIT DESCRIPTION
Operation (ON / OFF) of the ªABSº warning lamp is controlled by the ABS control module and ABS lamp driver mod-
ule.
If the Antilock brake system is in good condition, the ABS control module turns the ªABSº warning lamp ON at the
ignition switch ON, keeps it ON for 2 seconds only and then turns it OFF. If an abnormality in the system is detected,
the lamp is turned ON by ABS control module. Also, it is turned ON by ABS lamp driver module when the connector
of the ABS control module was disconnected.
INSPECTION
STEPACTIONYESNO
11) Turn ignition switch ON.
Do other warning lamp come ON?Go to step 2.Go to step 4.
21) Disconnect ABS hydraulic unit / control module
connector.
Does ABS warning lamp light with ignition switch ON?Replace ABS
hydraulic unit / control
module assembly.Go to step 3.
31) Remove combination meter.
Is bulb of ABS warning lamp in good condition?ªBl / Oº circuit shorted
to ground. If OK,
replace ABS
warning circuit (lamp
driver module).Replace bulb.
4Is IG fuse in good condition?Open in ªB / Wº wire to
combination meter or
poor connection.Repair and
replace.

YH4
GRAND
VITARA
ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL) 5E1-17
1. ABS hydraulic
unit / control
module connector
TABLE ± B ªABSº WARNING LAMP CIRCUIT CHECK ± LAMP COMES ªONº
STEADY
Refer to TABLE ± A for System Circuit Diagram and Circuit Description.
INSPECTION
STEPACTIONYESNO
1Perform diagnostic trouble code check. Is there any DTC
(including code No.12, NO CODES on SUZUKI scan
tool) exists?Go to step 2.Go to step 3.
2Is malfunction DTC (other than code No.12) exists at step
1?Go to step 7 of ABS
diagnostic flow table
in this section.Go to step 3.
31) Disconnect ABS hydraulic unit / control module
connector. (See Fig. 1)
2) Check for proper connection to ABS hydraulic
unit / control module connector at terminals ªA17º,
ªA25º and ªA10º.
3) If OK, turn ignition switch ªONº and measure
voltage at terminal ªA25º of connector.
Is it 10 ± 14 V?Go to step 4.ªB / Wº circuit open.
41) With ABS control module connector disconnected,
turn ignition switch ON and light ABS warning lamp.
2) Connect terminal ªA17º of disconnected connector to
ground using service wire.
Does ªABS warning lampº turn off?Go to step 5.ªBl / Oº circuit open.
If wire and
connection are OK,
replace ABS lamp
driver module.
51) Measure resistance from connector terminal ªA10º
to body ground.
Is continuity indicated?Substitute a
known-good ABS
hydraulic unit /
control module
assembly and
recheck.ªBº circuit open.
Fig. 1

YH4
GRAND
VITARA
5E1-18 ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL)
-1. ªABSº warning lamp
-2. ABS hydraulic unit /
control module assembly
-3. Diagnosis connector
3-1. Diag. switch terminal
3-2. Diag. ground terminal
TABLE ± C ªABSº WARNING LAMP CIRCUIT CHECK ± THE LAMP FLASHES
CONTINUOUSLY WHILE IGNITION SWITCH IS ON
CIRCUIT DESCRIPTION
When the diag. switch terminal is shorted or connected to the ground with the ignition switch ON, the diag. trouble
code (DTC) is indicated by flashing of the ªABSº warning lamp only in following cases.

Normal DTC (12) is indicated if no malfunction DTC is detected in the ABS.

A history malfunction DTC is indicated by flashing of the lamp if a current malfunction DTC is not detected at that
point although a history malfunction DTC is stored in memory.
INSPECTION
STEPACTIONYESNO
1Is diag. switch terminal connected to ground via
service wire?Go to step 3.Go to step 2.
21) Ignition switch ON.
2) Measure voltage between diag. switch terminal
and ground.
Is it 10 ± 14 V?Substitute a
known-good ABS
hydraulic unit /
control module
assembly and
recheck.ªPº wire circuit
shorted to
ground.
31) Ignition switch ON.
2) Does flashing of ªABSº warning lamp indicate
DTC (DTC 12 or history DTC)?Go to step 7 of ABS
diagnostic flow
table in this
section.Substitute a
known-good ABS
hydraulic unit /
control module
assembly and
recheck.

YH4
GRAND
VITARA
ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL) 5E1-19
-1. ªABSº warning lamp
-2. ABS hydraulic unit / control
module assembly
-3. Diagnosis connector
3-1. Diag. switch terminal
3-2. Diag. ground terminal
-4. ABS hydraulic unit/
control module connector
of harness
1. ABS hydraulic
unit / control
module connector
TABLE ± D CODE (DTC) IS NOT OUTPUTTED EVEN WITH DIAG. SWITCH
TERMINAL CONNECTED TO GROUND
CIRCUIT DESCRIPTION
When the diag. switch terminal is connected to the ground with the ignition switch turned ON, the ABS control mod-
ule outputs a diagnostic trouble code by flashing ªABSº warning lamp.
INSPECTION
STEPACTIONYESNO
1Is it shorted diag. switch terminal and ground terminal by
service wire properly?Go to step 2.Connect service
wire securely.
21) Disconnect service wire.
2) Disconnect ABS hydraulic unit / control module
connector. (See Fig. 1)
3) Measure resistance between diag. switch terminal
and connector terminal ªA8º.
Is it infinite (
)?ªPº circuit open.Go to step 3.
31) Measure resistance between ground terminal of
monitor connector and body ground.
Is continuity indicated?Go to step 4.ªBº circuit open or
poor connection.
41) Check for proper connection to ABS hydraulic
unit / control module at terminal ªA8º and ªA10º.
2) If OK, then check ªABSº warning lamp circuit
referring to ªTABLE A, B and Cº.
Is it in good condition?Substitute a
known-good ABS
hydraulic unit /
control module
assembly and
recheck.Repair ªABSº
warning lamp
circuit.
Fig. 1

YH4
GRAND
VITARA
5E1-20 ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL)
TABLE ± E EBD WARNING LAMP (BRAKE WARNING LAMP) CHECK-LAMP
COMES ªONº STEADY
CIRCUIT DESCRIPTION
EBD warning lamp (brake warning lamp) is controlled by parking brake switch, brake fluid level switch and ABS
control module / hydraulic unit assembly through lamp driver module in combination meter. Refer to ªTABLE-Aº for
circuit diagram.
STEP
ACTIONYESNO
11) Make sure that:

Parking brake is completely released.Go to step 2.Release parking
brake completely

Brake fluid level is upper than the minimum level.
Are the check results OK?and / or replenish
brake fluid.
2Does ªABSº warning lamp come on?Perform ªTABLE Bº
previously
outlined.Go to step 3.
31) Disconnect ABS hydraulic unit / control module
connector.
2) Check for proper connection to ABS hydraulic unit /
control module connector at terminals ªA26º.
3) If OK, apply chocks to wheels and select gear in neutral
position (P range for A / T).
4) Keep brake pedal depressed and start engine.
Release parking brake.
5) Connect terminal ªA26º of disconnected connector to
ground using service wire.
Does EBD warning lamp (brake warning lamp) turn off?Substitute a
known-good ABS
hydraulic unit /
control module
assembly and
recheck.ªBrº circuit open.
If wire and
connection are
OK, replace
combination
meter.

YH4
GRAND
VITARA
ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL) 5E1-31
1. Diagnosis
connector
(6 pins connector)
2. Diag. switch
terminal
3. Ground
4. Service wire
Brake
pedal
Ignition
sw.
Motor
Solenoid
Rear3.0 sec.
3.0
ON-VEHICLE SERVICE
PRECAUTION
When connector are connected to ABS hydraulic unit / control mod-
ule assembly, do not disconnect connectors of sensors and turn
ignition switch ON. Then DTC will be set in ABS control module.
ABS HYDRAULIC UNIT OPERATION CHECK
1) Check that basic brake system other than ABS is in good condi-
tion.
2) Check that battery voltage is 11V or higher.
3) With ªABSº warning lamp, check that no abnormality is de-
tected in ABS. Refer to ªDIAGNOSTIC TROUBLE CODE
(DTC) CHECKº in this section.
4) Lift up vehicle.
5) Set transmission to neutral and release parking brake.
6) Turn each wheel gradually by hand to check if brake dragging
occurs. If it does, correct.
7) With diag. switch terminal of diagnosis connector connected to
ground by using service wire, turn ignition switch ON and check
if ªABSº warning lamp indicates DTC 12.
8) Turn ignition switch OFF.
9) Perform following checks with help of another person.
Brake pedal should be depressed and then ignition switch
turned ON by one person and wheel should be turned by
another person's hand. At this time, check that:

Operation sound of solenoid is heard and wheel turns only
about 0.5 sec. (Brake force is depressurized).

Operation sound of pump motor is heard and pulsation is felt
at brake pedal.
10) If all 4-wheels cannot be checked during one ignition cycle
(OFF
ON), repeat Steps 8) and 9) till all 4 wheels are
checked.
If a faulty condition is found in Steps 9) and 10), replace hydrau-
lic unit / control module assembly.
11) Turn ignition switch OFF and remove service wire from diagno-
sis connector.

YH4
GRAND
VITARA
ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL) 5E1-35
FORWARD
1. Front wheel speed
sensor connector
2. Headlight assembly
1. Front wheel speed sensor
2. Bolt
REMOVAL
1) Disconnect negative cable at battery.
2) Hoist vehicle and remove wheel.
3) Disconnect front wheel speed sensor connector.
4) Remove harness clamp bolts and remove front wheel speed
sensor 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 installa-
tion hole.
SENSOR INSPECTION

Check sensor for damage.

Check sensor for resistance.
Resistance between terminals: 1.2 ± 1.6 k
at 20C (68F)
Resistance between terminal and sensor body: 1 M
or more
If any faulty is found, replace.
SENSOR ROTOR INSPECTION

Check rotor for being missing, damaged or deformed.

Turn drive shaft and check if rotor rotation is free from eccentricity
and looseness.

Check that no foreign material is attached.
If any faulty is found, repair or replace. Refer to WHEEL HUB RE-
MOVAL and INSTALLATION in Section 3D.

YH4
GRAND
VITARA
ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL) 5E1-37
1. Rear wheel speed sensor
2. Sensor rotor
3. Rear axle housing
1. Rear wheel speed
sensor harness
2. Connector
1. Sensor bolt
2. Clamps
REAR WHEEL SPEED SENSOR
OUTPUT VOLTAGE INSPECTION
Check in the same procedure as that used of front wheel speed
sensor check.
Output AC voltage at 2 / 3 to
one rotation per second (25 ± 38 Hz): 106 mV or more
Reference
When using oscilloscope,
peak-to-peak voltage at 2 / 3 to
one rotation per second (25 ± 38 Hz): 150 mV or more
REMOVAL
1) Disconnect negative cable at battery.
2) Hoist vehicle.
3) Disconnect rear wheel speed sensor connector and detach wire
harness from vehicle body and rear axle.
4) Remove harness clamps and remove rear wheel speed sensor
from rear axle.
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 installa-
tion hole.