body SUZUKI GRAND VITARA 2000 2.G Service Manual Online

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7B1-38 AUTOMATIC TRANSMISSION (4 A / T)
ª5º
ª4º
DIAGNOSTIC FLOW TABLE B-4 ªPOWERº LIGHT CIRCUIT CHECK
(ªPOWERº LIGHT COMES ON STEADILY)
WIRING DIAGRAM ± Refer to Table B-3 in this section.
TROUBLESHOOTING
STEPACTIONYESNO
1Check Power / Normal Change Switch Position.
Is switch button at Normal position?Go to Step 2.Set Power / Normal
change switch at
Normal position.
2Check Lamp Circuit for Short.
1) Turn ignition switch OFF and disconnect PCM
connectors.
2) Turn ignition switch ON.
Does ªPOWERº lamp come ON steadily?ªGr / Blº circuit
shorted to ground.Go to Step 3.
3Check Power / Normal Change Switch Circuit.
1) Check resistance between terminal E61-31
(G16/J20 engines) or E61-9 (H25 engine) of
disconnected PCM connector and body ground with
P / N change switch OFF.
Is continuity indicated?Go to Step 4.Check PCM ground
circuit for open.
If ground circuit is
OK, substitute a
known-good PCM
and recheck.
4Check Power / Normal Change Switch for Operation.
1) Remove Power / Normal change switch.
2) Check continuity between switch terminals ª4º and
ª5º under each condition below.
Normal position: No continuity
Power position: Continuity.
Is check result satisfactory?ªOr / Blº circuit
shorted to ground.Replace Power /
Normal change
switch.
Fig. for Step 1. Fig. for Step 4.

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7B1-46 AUTOMATIC TRANSMISSION (4 A / T)
DTC P0741 TCC (LOCK-UP) SOLENOID VALVE PERFORMANCE OR STUCK OFF
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITIONTROUBLE AREA
While running in 2nd or 4th gear, D range, TCC control
of PCM does not agree with actual operation of trans-
mission TCC even though solenoid valve is electrically
in good condition.
(2 driving cycles detection logic)
TCC (lock-up) solenoid valve stuck

TCC control valve stuck

Valve body fluid passage clogged

TCC faulty
DTC CONFIRMATION PROCEDURE
WARNING:

When performing a road test, select a place where there is no traffic or possibility of a traffic accident
and be very careful during testing to avoid occurrence of an accident.

Road test should be carried out with 2 persons, a driver and a tester, on a level road.
1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTC, pending DTC and freeze frame data in PCM memory by using scan tool and check fuel level meter
indication is 1/4 or more.
3) Start engine, warm it up to normal operating temperature and shift transfer lever to ª2Hº or ª4Hº range.
4) Increase vehicle speed with D range, and check that gear position changes from 1st to 2nd and keep driving
about 20 mph, 30 km/h in 2nd of ªDº range for 10 seconds. (Throttle valve should be not at idle position and
the opening should be kept constant in this step.)
5) Keep driving about 50 mph, 80 km/h in 4th of ªDº range for 10 seconds.
6) Release accelerator pedal, decrease vehicle speed and stop vehicle.
7) Check pending DTC and DTC by using scan tool.
TROUBLESHOOTING
STEPACTIONYESNO
1Was ªA / T DIAG. FLOW TABLEº performed?Go to Step 2.Go to ªA / T DIAG.
FLOW TABLEº.
2TCC solenoid valve operation check:
1) Check TCC solenoid valve operation referring to
ªSolenoid Valves Operation Checkº in this section.
Is it in good condition?Go to Step 3.Faulty TCC solenoid
valve.
3Valve body check:
1) Check valve body referring to ªUnit Repairº in this
section.
Is it in good condition?Faulty torque
converter.Faulty valve body.

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AUTOMATIC TRANSMISSION (4 A / T) 7B1-49
DTC P0751 SHIFT SOLENOID VALVE-A (#1) PERFORMANCE OR STUCK OFF
DTC P0756 SHIFT SOLENOID VALVE-B (#2) PERFORMANCE OR STUCK OFF
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITIONTROUBLE AREA
While running in D range, gear change control from
PCM to A / T does not agree with actual A / T gear posi-
tion even though solenoid valve is electrically in good
condition.
(A / T gear position is calculated based on engine
speed signal and vehicle speed sensor signal.)
(2 driving cycles detection logic)DTC P0751:

Shift solenoid valve-A stuck or leakage.

2-3 shift valve stuck.

Valve body fluid passage clogged.

Mechanical malfunction in transmission.
(Direct clutch malfunction)
DTC P0756:

Shift solenoid valve-B stuck or leakage.

1-2 shift valve stuck.

3-4 shift valve stuck.

Valve body fluid passage clogged.

Mechanical malfunction in transmission.
(2nd brake malfunction)
DTC CONFIRMATION PROCEDURE
WARNING:

When performing a road test, select a place where there is no traffic or possibility of a traffic accident
and be very careful during testing to avoid occurrence of an accident.

Road test should be carried out with 2 persons, a driver and a tester, on a level road.
1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTC, pending DTC and freeze frame data in PCM memory by using scan tool and check fuel level meter
indication is 1 / 4 or more.
3) Start engine, warm it up to normal operating temperature and shift transfer lever to ª2Hº or ª4Hº range.
4) Increase vehicle speed with D range, and check that gear position changes from 1st to 2nd, 3rd and 4th in that
order as vehicle speed increases, referring to ªGear Shift Diagramº in this section.
5) Stop vehicle and check pending DTC and DTC by using scan tool.
TROUBLESHOOTING
STEPACTIONYESNO
1Was ªA / T DIAG. FLOW TABLEº performed?Go to Step 2.Go to ªA / T DIAG.
FLOW TABLEº.
2Shift solenoid valve-A or -B operation check:
1) Check shift solenoid valve-A or -B for operation
referring to ªSolenoid Valves Operation Checkº
section.
Is it in good condition?Go to Step 3.Faulty shift solenoid
valve-A or -B.
3Valve body check:
1) Check valve body and its passage referring to
ªUnit Repairº section.
Are they in good condition?Overhaul and repair
automatic transmis-
sion.Faulty valve body.

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1. Master cylinder
1. Attaching bolt
2. Attaching nut
3. Clevis pin
ªAº
7C1-6 CLUTCH
INSTALLATION
1) To bleed air from master cylinder itself, tilt it as shown in figure
and add fluid into it.
NOTE:
After bleeding air from master cylinder, plug pipe hole in it
to prevent fluid from spilling out of it till pipe is connected.
2) Install master cylinder assembly and new gasket to body, attach-
ing bolt, nuts and push rod clevis pin.
NOTE:
Do not reuse gasket.
3) Torque attaching bolt and nut to specification.
4) Connect fluid pipe and torque flare nut to specification.
Tightening Torque
(a): 13 N
.m (1.3 kg-m, 9.5 lb-ft)
(b): 16 N
.m (1.6 kg-m, 11.5 lb-ft)
5) Apply grease to clevis pin and install it.
ªAº: Grease 99000-25010
6) Fill reservoir with specified brake fluid and check fluid leakage.
7) After installation, bleed air from system and check clutch pedal
free travel. Refer to BRAKE section for air bleeding procedure.
FLUID INSPECTION
Fluid level should be always between MIN and MAX lines on reser-
voir. If fluid decreases quickly, check for leakage, repair leaky point,
if any, and add fluid up to MAX level.
NOTE:

Brake fluid damages painted surface badly. Should it get on
painted surface, remove it immediately and clean surface
thoroughly.

Do not use shock absorber fluid or any other fluid which con-
tains mineral oil. Do not use container which has been used
for mineral oil or which is wet from water. Mineral oil will
cause swelling and distortion of rubber parts in hydraulic
clutch system and water will mix with brake fluid, lowering
fluid boiling point. Keep all fluid containers capped to pre-
vent contamination.

Make sure not to use fluid whose container cap was first
opened more than a year ago.

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3
4
1. Reservoir cap
2. Cylinder
3. Piston assembly
4. Push rod
5. Piston stopper
6. Circlip
7. Boot
8. Lock nut
9. Clevis
1. Circlip
2. Push rod
3. Piston
4. Cylinder
1. Circlip
2. Push rod
3. Piston stopper
CLUTCH 7C1-7
DISASSEMBLY AND ASSEMBLY CLUTCH
MASTER CYLINDER
DISASSEMBLY
1) Remove boot and then circlip with piston pushed in.
2) Remove push rod and blow compressed air gradually into hole
for pipe connection to remove piston assembly, using care to
prevent it from jumping out.
INSPECTION
Inspect all disassembled parts for wear or damage and replace
parts if necessary.
NOTE:

Wash disassembled parts with brake fluid.

Do not reuse piston assembly and circlip.
Inspect cylinder bore for scoring or corrosion. It is best to replace
corroded cylinder. Corrosion can be identified as pits or excessive
roughness.
NOTE:
Polishing bore of cylinder with anything abrasive is prohib-
ited, as damage to cylinder bore may occur.
Rinse cylinder in clean brake fluid. Shake excess rinsing fluid from
cylinder. Do not use a cloth to dry cylinder, as lint from cloth cannot
be kept away from cylinder bore surfaces.
ASSEMBLY
NOTE:
Before installation, wash each part in specified brake fluid.
1) Apply brake fluid to inside of piston assembly and cylinder body.
2) Install piston assembly into cylinder.
3) With piston pushed down, install circlip as shown.
And install boot.

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DIFFERENTIAL (FRONT) 7E-7
1
1. ECM (PCM); viewed from harness side
4WD CONTROL CIRCUIT INSPECTION
Voltage Check [G16 and J20 engine models]
Check for input or output voltage (voltage between each circuit and
body ground) of ECM (PCM) with ECM (PCM) connector con-
nected and ignition switch turned ON.
TER-
MINALCIRCUITWIRE
COLORNORMAL
VOLTAGECONDITION
E6110 ± 14 VTransfer shift lever: 2H or NE61-
194WD Indicator lampOr / B0 ± 1 V4 seconds after transfer shift lever shifted
to 4H or 4L
C51 2Air pump assembly0 ± 1 VTransfer shift lever: 2H or NC51-2
-7(Pump motor and release
valve)R10 ± 14 V1 seconds after transfer shift lever shifted
to 4H or 4L
C51-24WD switchB/Or10 ± 14 VTransfer shift lever: 2H or N
-184WD switchB/Or0 ± 1 VTransfer shift lever: 4H or 4L
C51-
3-17GroundB/Bl0 ± 1 V±
C51 2Airpumpassembly0 ± 1 VTransfer shift lever: 2H or NC51-2
-27
Air um assembly
(pressure switch)P10 ± 14 V4 seconds after transfer shift lever shifted
to 4H or 4L

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8
BODY ELECTRICAL SYSTEM 8-1
SECTION 8
BODY ELECTRICAL SYSTEM
WARNING:
For vehicles equipped with Supplemental Restraint (Air Bag) System

Service on and around the air bag system components or wiring must be performed only by an autho-
rized SUZUKI dealer. Refer to ªAir Bag System Components and Wiring Location Viewº under ªGener-
al Descriptionº in air bag system section in order to confirm whether you are performing service on
or near the air bag system components or wiring. Please observe all WARNINGS and ªService Precau-
tionsº under ªOn-vehicle Serviceº in air bag system section before performing service on or around
the air bag system components or wiring. Failure to follow WARNINGS could result in unintentional
activation of the system or could render the system inoperative. Either of these two conditions may
result in severe injury.

Technical service work must be started at least 90 seconds after the ignition switch is turned to the
ªLOCKº position and the negative cable is disconnected from the battery. Otherwise, the system may
be activated by reserve energy in the Sensing and Diagnostic Module (SDM).
WIRING SYSTEM
(Harnesses, Connectors, Fuses, Relay, Switches, Grounds, System Circuit Diagram)Section 8A . . . . . . .
LIGHTING SYSTEMSection 8B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTRUMENTATION AND DRIVER INFORMATIONSection 8C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WINDOWS, MIRRORS, SECURITY AND LOCKSSection 8D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IMMOBILIZER CONTROL SYSTEMSection 8F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONTENTS
GENERAL DESCRIPTION8-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cautions in Servicing8-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Symbols and Marks8-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Abbreviations8-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring Color Symbols8-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Joint Connector8-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse Box and Relay8-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply Diagram8-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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8-2 BODY ELECTRICAL SYSTEM
GENERAL DESCRIPTION
The body electrical components of this vehicle are designed to operate on 12 Volts power supplied by the battery.
The electrical system utilizes negative ground polarity.
CAUTIONS IN SERVICING
When performing works related to electric systems, observe follow-
ing cautions for the purpose of protection of electrical parts and pre-
vention of a fire from occurrence.

When removing the battery from the vehicle or disconnecting the
cable from the battery terminals for inspection or service works
on the electric systems, always confirm first that the ignition
switch and all the other switches have been turned OFF. Other-
wise, the semi-conductor part may be damaged.

When disconnecting cables from the battery, be sure to discon-
nect the one from the negative (±) terminal first and then the other
from the positive (+) terminal.

Reverse the above order when connecting the cables to the bat-
tery terminals.

When disconnecting connectors, never pull the wiring harnesses.
Unlock the connector lock first and then pull them apart by holding
connectors themselves.

When connecting connectors, also hold connectors and put them
together until they lock securely (a click is heard).

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BODY ELECTRICAL SYSTEM 8-3

When installing the wiring harness, fix it with clamps so that no
slack is left.

When installing vehicle parts, be careful so that the wiring har-
ness is not interfered with or caught by any other part.

To avoid damage to the harness, protect its part which may con-
tact against a part forming a sharp angle by winding tape or the
like around it.

When replacing a fuse, make sure to use a fuse of the specified
capacity. Use of a fuse with a larger capacity will cause a damage
to the electrical parts and a fire.

Always be careful not to handle electrical parts (computer, relay,
etc.) in a rough manner or drop them.

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8-4 BODY ELECTRICAL SYSTEM

When performing a work that produces a heat exceeding 80C
in the vicinity of the electrical parts, remove the heat sensitive
electrical part(s) beforehand.

Use care not to expose connectors and electrical parts to water
which will be a cause of a trouble.

When using a tester for checking continuity or measuring voltage,
be sure to insert the tester probe from the wire harness side.
SYMBOLS AND MARKS
Refer to Section 8A.
ABBREVIATIONS
Refer to Section 8A.