4wd switch SUZUKI GRAND VITARA 2000 2.G Service Workshop Manual

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GENERAL INFORMATION 0A-21
A
ABS : Anti-lock Brake System
ATDC : After Top Dead Center
API : American Petroleum Institute
ATF : Automatic Transmission Fluid
ALR : Automatic Locking Retractor
AC : Alternating Current
A / T : Automatic Transmission
A / C : Air Conditioning
ABDC : After Bottom Dead Center
A / F : Air Fuel Mixture Ratio
A-ELR : Automatic-Emergency
Locking Retractor
B
B+ : Battery Positive Voltage
BTDC : Before Top Dead Center
BBDC : Before Bottom Dead Center
C
CKT : Circuit
CMP Sensor : Camshaft Position Sensor
(Crank Angle Sensor, CAS)
CO : Carbon Monoxide
CPP Switch : Clutch Pedal Position Switch
(Clutch Switch, Clutch Start
Switch)
CPU : Central Processing Unit
CRS : Child Restraint System
D
DC : Direct Current
DLC : Data Link Connector
(Assembly Line Diag. Link,
ALDL, Serial Data Link, SDL)
DOHC : Double Over Head Camshaft
DOJ : Double Offset Joint
DRL : Daytime Running Light
DTC : Diagnostic Trouble Code
(Diagnostic Code)
E
EBCM : Electronic Brake Control
Module, ABS Control
Module
EBD : Electric Brake force Distribution
ECM : Engine Control Module
ECT Sensor : Engine Coolant Temperature
Sensor (Water Temp.
Sensor, WTS)
EGR : Exhaust Gas Recirculation
EGRT Sensor : EGR Temperature Sensor
(Recirculated Exhaust Gas
Temp. Sensor, REGTS)
EFE Heater : Early Fuel Evaporation
Heater (Positive Temperature
Coefficient, PTC Heater)
ELR : Emergency Locking Retractor
EPS : Electronic Power Steering
EVAP : Evaporative Emission
EVAP Canister : Evaporative Emission
Canister (Charcoal Canister)
F
4WD : 4 Wheel Drive
G
GEN : Generator
GND : Ground
H
HC : Hydrocarbons
HO2S : Heated Oxygen Sensor
I
IAC Valve : Idle Air Control Valve (Idle
Speed Control Solenoid
Valve, ISC Solenoid Valve)
IAT Sensor : Intake Air Temperature
Sensor (Air temperature
Sensor, ATS)
ICM : Immobilizer Control Module
IG : Ignition
ISC Actuator : Idle Speed Control Actuator
(Motor)
ABBREVIATIONS MAY BE USED IN THIS MANUAL

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Diagnostic Trouble Code (DTC) Table 5E1-14. . .
System Circuit 5E1-15. . . . . . . . . . . . . . . . . . . . . . .
Table ± A ªABSº Warning Lamp Circuit
Check ± Lamp does not come ªONº
at ignition switch on 5E1-16. . . . . . . . . . . . . . . . . .
Table ± B ªABSº Warning Lamp Circuit
Check ± Lamp comes ªONº steady 5E1-17. . . .
Table ± C ªABSº Warning Lamp Circuit
Check ± The lamp flashes continuously
while ignition switch is on5E1-18 . . . . . . . . . . . . . .
Table ± D Code (DTC) is not Outputted
even with Diag. Switch Terminal
Connected to Ground 5E1-19. . . . . . . . . . . . . . . .
Table ± E EBD Warning Lamp (Brake
Warning Lamp) Check-lamp Comes
ªONº Steady 5E1-20. . . . . . . . . . . . . . . . . . . . . . . .
DTC 15 ± G Sensor Circuit 5E1-21. . . . . . . . . . . .
DTC 21, 22, 25, 26, 31, 32, 35 or 36
± Wheel Speed Sensor Circuit 5E1-23. . . . . . . .
DTC 41, 45 or 56 ± Solenoid Circuit 5E1-26. . . . .
DTC 57 ± Solenoid and Pump Motor
Power Source Circuit 5E1-27. . . . . . . . . . . . . . . .
DTC 61 ± ABS Pump Motor Circuit 5E1-28. . . . . .
DTC 63 ± ABS Fail-Safe Relay Circuit 5E1-29. . .
DTC 71 ± ABS Control Module 5E1-30. . . . . . . . .
ON-VEHICLE SERVICE5E1-31 . . . . . . . . . . . . . . . .
Precaution 5E1-31. . . . . . . . . . . . . . . . . . . . . . . . . . .
ABS Hydraulic Unit Operation Check 5E1-31. . . .
ABS Hydraulic Unit / Control Module
Assembly 5E1-32. . . . . . . . . . . . . . . . . . . . . . . . . .
Hydraulic unit inspection 5E1-32. . . . . . . . . . . . . Removal 5E1-32. . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5E1-33. . . . . . . . . . . . . . . . . . . . . . . . .
Front Wheel Speed Sensor 5E1-34. . . . . . . . . . . .
Output voltage inspection 5E1-34. . . . . . . . . . . .
Removal 5E1-35. . . . . . . . . . . . . . . . . . . . . . . . . .
Sensor inspection 5E1-35. . . . . . . . . . . . . . . . . .
Sensor rotor inspection 5E1-35. . . . . . . . . . . . . .
Installation 5E1-36. . . . . . . . . . . . . . . . . . . . . . . . .
Front Sensor Rotor 5E1-36. . . . . . . . . . . . . . . . . . .
Removal 5E1-36. . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5E1-36. . . . . . . . . . . . . . . . . . . . . . . . .
Rear Wheel Speed Sensor 5E1-37. . . . . . . . . . . .
Output voltage inspection 5E1-37. . . . . . . . . . . .
Removal 5E1-37. . . . . . . . . . . . . . . . . . . . . . . . . .
Sensor inspection 5E1-38. . . . . . . . . . . . . . . . . .
Sensor rotor inspection 5E1-38. . . . . . . . . . . . . .
Installation 5E1-38. . . . . . . . . . . . . . . . . . . . . . . . .
Rear Sensor Rotor 5E1-39. . . . . . . . . . . . . . . . . . . .
Removal 5E1-39. . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5E1-39. . . . . . . . . . . . . . . . . . . . . . . . .
G Sensor 5E1-40. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 5E1-40. . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection 5E1-40. . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5E1-40. . . . . . . . . . . . . . . . . . . . . . . . .
Transfer 4WD Switch 5E1-41. . . . . . . . . . . . . . . . .
TIGHTENING TORQUE
SPECIFICATIONS5E1-41 . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOLS5E1-42 . . . . . . . . . . . . . . . . . . . . . .
5E1-2 ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL)
GENERAL DESCRIPTION
The ABS (Antilock Brake System) controls the fluid pressure applied to the wheel cylinder of each brake from the
master cylinder so that each wheel is not locked even when hard braking is applied. This ABS is a 4-wheel type
which controls the fluid pressure applied to the wheel cylinder of each of the four brakes to prevent each wheel
from getting locked.
The component parts of this ABS includes following parts in addition to those of the conventional brake system.

Wheel speed sensor which senses revolution speed of each wheel and outputs its signal.

In this ABS, ABS hydraulic unit (actuator assembly), ABS control module, pump motor relay and fail-safe relay
are combined as one component.

ABS control module which sends operation signal to ABS hydraulic unit to control fluid pressure applied to each
wheel cylinder based on signal from each wheel speed sensor so as to prevent wheel from locking.

ABS hydraulic unit which operates according to signal from ABS control module to control fluid pressure applied
to wheel cylinder of each of 4 wheels.

Fail-safe (solenoid valve) relay which supplies power to solenoid valve in ABS hydraulic unit and pump motor
relay.

Pump motor relay which supplies power to pump motor in ABS hydraulic unit.

ªABSº warning lamp which lights to inform abnormality when system fails to operate properly.

G sensor which detects body deceleration speed. (For 4WD model only)
This ABS is equipped with Electronic Brake force Distribution (EBD) system that controls a fluid pressure of rear
wheels to best condition, which is the same function as that of proportioning valve, by the signal from wheel sensor
independently of change of load due to load capacity and so on. And if the EBD system fails to operate properly,
the brake warning lamp lights to inform abnormality.

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1. Wheel speed sensor (Right-front)
2. Stop lamp switch
3. ABS control module
4. Wheel speed sensor (Right-rear)
5. Diagnosis connector
6. Data link connector7. Wheel speed sensor (Left-rear)
8. ªABSº warning lamp
9. ABS pump motor relay
10. ABS fail-safe relay (Solenoid valve relay)
11. Lamp drive module
12. Wheel speed sensor (Left-front)13. ABS hydraulic unit
14. G sensor (For 4WD model only)
15. 4WD switch (For 4WD model only)
16. ABS hydraulic unit / control module assembly
(with ABS pump motor & fail-safe relays)
17. ªEBDº warning lamp (Brake warning lamp)
Wheel speed sensor (LR)
Wheel speed sensor (LF)
Wheel speed sensor (RF)
Wheel speed sensor (RR)
Stop lamp switch
G sensor (For 4WD model only)
Diag. switch terminal
Battery Voltage
4WD switch (For 4WD model only)
Pump motor relay
Pump motor
LF inlet solenoid
LF outlet solenoid
LR inlet solenoid
LR outlet solenoid
Rear inlet solenoid
Rear outlet solenoid
ªABSº warning lamp
Brake warning lamp
Data link connector
Fail-safe relay
Hydraulic unit
OUTPUTINPUT
ABS control
module
ABS hydraulic unit / control
module assembly
PCM or ECMIdle up
5E1-4 ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL)
SYSTEM SCHEMATIC

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1. Wheel speed sensor
(Right-front)
2. Stop lamp switch
3. Data link connector
4. ªABSº warning lamp
5. Wheel speed sensor
(Right-rear)6. Wheel speed sensor
(Left-rear)
7. Ground
8. Diagnosis connector (Black connector)
9. Wheel speed sensor
(Left-front)10. ABS hydraulic unit/control module assembly
with ABS pump motor relay
and fail-safe relay
11. G sensor (For 4WD model only)
12. Wheel speed sensor rotor (ring)
13. 4WD switch (For 4WD model only)
14. EBD warning lamp (Brake warning lamp)
LH steering vehicle
RH steering vehicle
ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL) 5E1-5
ABS COMPONENT PARTS LOCATION

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ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL) 5E1-15
1. Battery
2. Main fuses
3. Ignition switch
4. Circuit fuses
5. ABS hydraulic unit / control module
5-1. Terminal arrangement for ABS hydraulic unit /
control module assembly
5-2. ABS fail-safe relay (Solenoid valve relay)
5-3. ABS pump motor relay
5-4. Pump motor
5-5. Solenoid valves
6. ªABSº warning lamp
7. Right-rear wheel speed sensor
8. Left-rear wheel speed sensor
9. Right-front wheel speed sensor
10. Left-front wheel speed sensor
11. Data link connector
12. Diagnosis connector
13. Stop lamp
14. Stop lamp switch
15. PCM (ECM+TCM) or ECM
16. G sensor (For 4WD model only)
17. 4WD switch (For 4WD model only)
18. 4WD indicator lamp (For 4WD model only)
19. 4WD controller (If equipped)
20. EBD warning lamp (Brake warning lamp)
21. Combination meter
22. Parking brake switch
23. Brake fluid lever switch
24. Warning lamp driver moduleWire colorB : Black
B / Bl : Black / Blue
B / O : Black / Orange
B / W : Black / White
Bl : Blue
Bl /B : Blue / Black
Bl / O : Blue / Orange
Br : Brown
G : Green
G / B : Green / Black
G / W : Green / White
Lg : Lightgreen
Lg / B : Lightgreen / Black
O / B : Orange / Black
O / G : Orange / Green
O / W : Orange / White
P : Pink
P / B : Pink / Black
V / G : Violet / Green
W / BI : White / Blue
W / G : White / Green
W / Y : White / Yellow
Y : Yellow
Y / B : Yellow / Black
SYSTEM CIRCUIT
TERMINALCIRCUIT
A1Right-rear wheel speed sensor (+)
A2Right-front wheel speed sensor (±)
A3Right-front wheel speed sensor (+)
A4G sensor ground (For 4WD model only)
A5ÐÐÐ
A6ÐÐÐ
A7Idle up signal
A8Diagnosis switch terminal
A9Stop lamp switch
A10Ground (For ABS control module)
A11ABS fail-safe relay
A12Right-rear wheel speed sensor (±)
A13Left-front wheel speed sensor (±)
A14G sensor signal (For 4WD model only)
A15ÐÐÐ
A16ÐÐÐ
A17ªABSº warning lamp
A18Left-rear wheel speed sensor (+)
A19Left-rear wheel speed sensor (±)
A20Left-front wheel speed sensor (+)
A21ÐÐÐ
A22Data link connector
A23ÐÐÐ
A244WD switch (For 4WD model only)
A25Ignition switch
A26ªEBDº warning lamp
A27ABS pump motor relay
A28Ground (For ABS pump motor)

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ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL) 5E1-21
1. Ignition switch
2. G sensor
3. ABS hydraulic unit control
module assembly
4. ABS hydraulic unit/
control module
connector of harness
O/G
DTC 15 (DTC C1015) ± G SENSOR CIRCUIT (FOR 4WD MODEL ONLY)
DESCRIPTION
While a vehicle is at stop or running, if the potential difference between the sensor signal terminal ªA14º and the
sensor ground terminal ªA4º is not within the specified voltage value, or if the signal voltage while at a stop does
not vary from that while running, this DTC is set.
Therefore, this DTC may be set when a vehicle is lifted up and its wheel(s) is turned. In such case, clear the DTC
and check again.

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5E1-40 ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL)
1. Parking brake
lever ass'y
2. G sensor
3. Bolt ª1º
4. Bolt ª2º
[A] Horizontal
[B] Upright with
arrow upward
[C] Upright with
arrow downward
A: Forward
G SENSOR (FOR 4WD MODEL ONLY)
REMOVAL
1) Turn ignition switch OFF and disconnect battery negative cable.
2) Remove rear center console box.
3) Remove parking brake lever bolts ª1º and G sensor with bracket
from floor.
NOTE:
Loosen only bolt ª2º.
4) Remove sensor with bracket from floor.
5) Disconnect connector from sensor.
CAUTION:

Do not separate sensor and bracket. It will lead to erro-
neous assembly.

Sensor must not be dropped or shocked. It will affect its
original performance.
INSPECTION
1) Check sensor bracket for bend.
2) Connect positive cable of 12 volt battery to ªAº terminal of sensor
and ground cable to ªCº terminal. Then using voltmeter, check
voltage between ªBº terminal and ªCº terminal.
When placed horizontally: 2 ± 3 V
When placed upright with arrow upward: 3 ± 4 V
When placed upright with arrow downward: 1 ± 2 V
If measured voltage is not as specified, replace sensor with
bracket.
INSTALLATION
1) Connect connector to sensor securely.
2) Install sensor with bracket and parking lever assy onto floor so
that arrow mark directs vehicle forward.
Tightening Torque
(a): 23 N
.m (2.3 kg-m, 17.0 lb-ft)
3) Install rear console box.

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ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL) 5E1-41
(d)
TRANSFER 4WD SWITCH
For removal, inspection and installation of this switch, refer to
SWITCHES in Section 7A.
TIGHTENING TORQUE SPECIFICATIONS
FasteningpartsTightening torqueFastening artsN.mkg-mlb-ft
Brake pipe flare nut: (a)161.611.5
ABS hydraulic unit nut: (b)212.115.5
ABS hydraulic unit bracket bolt: (c)101.07.5
Wheel speed sensor bolt(Front): (d)232.317.0Wheel s eed sensor bolt(Rear): (e)212.115.5
Parking lever assy mounting bolt: (f)232.317.0

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7A-6 MANUAL TRANSMISSION (TYPE 1)
3, (a)
1. Coupler
2. Clamp3. 4WD switch
4. Boot No. 2
1. Back up light switch
2. 4WD switch
1. Back up light switch coupler
2. Front propeller shaft
SWITCHES
TRANSFER 4WD SWITCH
1) Remove console box and lift transmission control lever boots
No. 2 and No. 3. (Refer to page 7A-4.)
2) Remove transfer control lever boot No. 2, unclamp wiring on
transfer case to free it and pull off coupler.
3) Replace switch and connect as it was.
Tightening Torque
(a): 20 N
.m (2.0 kg-m, 14.5 lb-ft)
4) Turn ON ignition switch, shift transfer shift control lever to 4WD
position and check that indicator lights. Turn OFF switch after
checking.
NOTE:

When removing and reinstalling switch, use care not to let
dust enter transfer box inside.

Make sure to reset clamp for wiring which is located
where invisible directly.

It is recommended to work on transfer shift control lever
boot No. 1 from underside of vehicle on lift.

Identify this switch by its leg part which is different for that
of back up light switch.
BACK UP LIGHT SWITCH
WARNING:
Refrain from work while exhaust center pipe is hot.
REMOVAL AND INSTALLATION
NOTE:
When replacing switch, use care not to let dust enter transmis-
sion through switch hole.
1) Lift up vehicle.
2) Remove coupler(s) for switch wiring.

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1. Back up light switch
2. Exhaust center pipe
1. Ohmmeter
2. Back up light switch or 4WD switch1, (a)
[Type 1]
[Type 2]
MANUAL TRANSMISSION (TYPE 1) 7A-7
3) Replace switch, connect and clamp as they were.
Tightening Torque
(a): 20 N
.m (2.0 kg-m, 14.5 lb-ft) (Type 1)
(a): 45 N
.m (4.5 kg-m, 32.5 lb-ft) (Type 2)
4) When back up light switch has been replaced, check switch for
proper function with ignition switch turned ON and gear shifted
to reverse position. Turn OFF switch after checking its function.
INSPECTION OF 4WD SWITCH AND BACK UP LIGHT
SWITCH
1) Undo clamp and disconnect coupler of back up light switch
and / or 4WD switch.
2) Function of back up light switch can be checked as shown in fig-
ure.
There should be conduction at these terminals only when shift
lever is shifted to reverse position.
3) Function of transfer 4WD switch can be checked in the same
manner as back up light switch.
There should be conduction at these terminals when shift lever
is shifted to 4H, and 4L positions.
Upon completion of check, connect coupler and clamp wiring har-
ness as they were.
NOTE:
When replacing switch(es), use care not to let dust enter trans-
mission through switch hole(s).