Ignition SUZUKI GRAND VITARA 1998 2.G Service Owners Manual

YH4
GRAND
VITARA
Type-2
1. Select lever
2. Detent pin
3. Detent plate4. Lock plate
5. Shift lock solenoid
1. Cover
2. Screw3. Select lever
4. Button
AUTOMATIC TRANSMISSION (4 A / T) 7B1-69
SHIFT LOCK (SOLENOID) MANUAL RELEASE
Shift lock can be manually released by following procedure.
1) Remove access hole cover by unfastening screw.
2) Turn ignition key to ªACCº position and move shift lock solenoid
rod (or manual release plate) toward rear side of vehicle by using
screw driver or the like.
3) In this state, select lever can be moved to any range or position.
SYSTEM INSPECTION
1) Check to make sure that select lever cannot be moved to any
other range from ªPº range position when ignition switch key is
at ªACCº position, at ªLOCKº position (or it is removed from key-
hole of ignition switch) or brake pedal is not depressed.
2) Shift select lever to ªPº range position, release knob button and
check for the following.

Ignition key can be turned between ªLOCKº and ªACCº posi-
tions back and forth and also it can be removed from ignition
switch.

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GRAND
VITARA
7B1-70 AUTOMATIC TRANSMISSION (4 A / T)
1. Cover
2. Screw
3. Shift lock solenoid rod
(or manual release plate)4. Select lever
5. Button
Not turn between ªACCº
and ªLOCKº positions.
Type-1
Type-2

With shift lock solenoid rod (or manual release plate) moved
in arrow direction and ignition key turned to ªACCº position, se-
lect lever can be shifted from ªPº range position to any other
range.

With shift lock solenoid rod (or manual release plate) moved
in arrow direction and ignition key turned to ªLOCKº position,
select lever can not be shifted from ªPº range position to any
other range.

When ignition switch is turned ªONº and brake pedal is de-
pressed, select lever can be shifted from ªPº range position to
any other range.
3) With select lever shifted to any position other than ªPº range,
check that ignition key cannot be turned ªLOCKº position and it
cannot be removed from ignition switch unless it is at ªLOCKº
position.

YH4
GRAND
VITARA
AUTOMATIC TRANSMISSION (4 A / T) 7B1-71
Ignition switch side
1. Ignition switch assembly
2. Clamp screw
3. Interlock cable
Select lever side
Type-1
1. Inner end of interlock cable
2. Interlock cam (or key release cam)
3. Stud bolt4. Cam boss
5. Claw
Select lever side
Type-2
KEY INTERLOCK CABLE
NOTE:
Don't bend interlock cable excessively when removing and
installing it, or system will not operate correctly.
Removal
1) Disconnect negative (±) cable from battery.
2) If equipped with air bag system, disable air bag system.
Refer to ªDisabling Air bag Systemº in Section 10B.
3) Remove steering column hole cover.
4) Tilt steering column if steering column is adjustable.
If no adjustable, loosen steering column bolts.
5) Remove steering column cover.
6) Remove interlock cable clamp screw located at ignition switch
assembly.
7) Disconnect interlock cable inner end.
(Ignition switch side.)
8) With console box removed, take out interlock cable by loosening
lock nuts.
9) Detach cable end from interlock cam (or key release cam) while
pressing claws of interlock cam boss. At this time, be careful not
to cause damage to its claws.

YH4
GRAND
VITARA
1. Ignition switch assembly
2. Clamp screw
3. Outer end
1. Interlock cable
2. Steering column
3. Steering column
holder
Type-1
1. Interlock cam
2. Lever plate
3. Interlock cable
4. Pin with 4 mm (0.15 in.) dia.
7B1-72 AUTOMATIC TRANSMISSION (4 A / T)
Installation
1) Shift select lever to ªNº range and turn ignition key to ªACCº
position.
2) Connect inner end of interlock cable to key interlock lever (Igni-
tion switch side).
3) Install outer end bracket of interlock cable to ignition switch as-
sembly, and tighten screw to specified torque.
Tightening Torque
(a): 2.2 N
.m (0.22 kg-m, 1.5 lb-ft)
4) Pass and connect interlock cable as shown at the left figure.
TYPE-1
5) Fix interlock cam by inserting pin with about 4 mm (0.15 in.) dia.
into holes of cam and lever plate.
6) Install cable end to interlock cam and stud bolt and after making
sure that cable outer is pushed in arrow direction B by leaf
spring, tighten mounting nut to specified torque. Remove pin.
Tightening Torque
(a): 13 N
.m (1.3 kg-m, 9.5 lb-ft)
7) Turn ignition key to ªACCº position and shift select lever to ªNº
range, and check for the followings.
a. When select lever is shifted at ªPº range with knob button
depressed, ignition key can not be turned from ªACCº to
ªLOCKº position.
b. When knob button is released, ignition key can be turned to
ªLOCKº position.
c. When ignition key is at ªLOCKº position, select lever can not
be shifted from ªPº to any other range.
8) Install console box.
9) Install steering column cover.
10) Adjust steering column or tighten steering column bolts.
11) Install steering column hole cover.
12) If equipped with air bag system, enable air bag system.
Refer to ªEnabling Air bag Systemº in Section 10B.

YH4
GRAND
VITARA
1. Inner end of interlock cable
2. Key release cam
1. Key release cam
2. Cable outer(a)
Type-2
Type-2
AUTOMATIC TRANSMISSION (4 A / T) 7B1-73
TYPE-2
5) With key release cam set as shown at the left figure, connect
inner end of interlock cable to key release cam. (Select lever
side.)
6) Move key release cam so that it is set at such angle as shown
at the left figure and with special tool inserted in hole A , fix key
release cam.
Special Tool
(A): 09925-78210 (6 mm)
7) With key release cam fixed with special tool, install cable outer
to bracket and after making sure that cable outer is pushed in
arrow direction B by leaf spring, tighten mounting nut to speci-
fied torque. Remove special tool.
Tightening Torque
(a): 13 N
.m (1.3 kg-m, 9.5 lb-ft)
8) Turn ignition key to ªACCº position and shift select lever to ªNº
range, and check for the followings.
a. When select lever is shifted at ªPº range with knob button
depressed, ignition key can not be turned from ªACCº to
ªLOCKº position.
b. When knob button is released, ignition key can be turned to
ªLOCKº position.
c. When ignition key is at ªLOCKº position, select lever can not
be shifted from ªPº to any other range.
9) Install console box.
10) Install steering column cover.
11) Adjust steering column or tighten steering column bolts.
12) Install steering column hole cover.
13) If equipped with air bag system, enable air bag system.
Refer to ªEnabling Air bag Systemº in Section 10B.

YH4
GRAND
VITARA
1. 4WD switch
2. Air pump assembly
3. Pump motor
4. Release valve
5. Pressure switch6. Transfer
7. Front differential
8. Air hose and pipe
9. 4WD indicator lamp
10. To ignition switch
11. ECM or PCM
Operation
(refer to ªComponents and Functionsº)
Power supply
(from ECM or PCM)
DIFFERENTIAL (FRONT) 7E-3
System Circuit and Operation

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GRAND
VITARA
7E-6 DIFFERENTIAL (FRONT)
STEPACTIONYESNO
1Turn ON ignition switch (but engine at stop) and
check malfunction indicator lamp.
Does lamp light up?Go to step 2.A trouble has
occurred at some
place. Repair it
referring to
MALFUNCTION
INDICATOR LAMP
(ªCHECK ENGINEº
LAMP) CHECK in
DIAGNOSIS of
SECTION 6.
2Check 4WD switch circuit.
Turn ignition switch ON and check that voltage
between terminal C51-2-18 and terminal C51-3-17
(ground) for G16 / J20 (terminal C51-1-11 and terminal
C51-3-26 (ground) for H25) is as follows.

When transfer shift lever is in N or 2H: 10 ± 14 V

When transfer shift lever is in 4L or 4H: 0 ± 1 V
Is the check result satisfactory?Go to step 3.Check 4WD switch
(refer to SECTION
7A), ªB / Orº and ªBº
circuits of 4WD
switch.
If OK, substitute a
known-good ECM
(PCM) and recheck.
3Check power supply.
1) Turn ignition switch ON.
2) Check voltage between C51-2-7 and C51-3-17
(ground) for G16 / J20 (C51-1-15 and C51-3-26
(ground) for H25). The check results should be as
follows.

When transfer shift lever is in N or 2H: 0 ± 1 V

When transfer shift lever is in 4L or 4H: 10 ± 14 V
Is the check result satisfactory?Go to step 4.Check ªRº circuit. If
it is OK, substitute a
known-good ECM
(PCM) and recheck.
4Check air pump assembly circuit.
1) Check for proper connection to air pump
assembly at all terminals.
2) Turn ignition switch ON.
3) Check voltage between C51-2-27 and C51-3-17
(ground) for G16 / J20 (C51-1-18 and C51-3-26
(ground) for H25). The check result should be as
follows.

When transfer shift lever is in 2H or N: 0 ± 1 V

When transfer shift lever is in 4L or 4H
(more than 4 seconds after shifted to 4L or 4H):
10 ± 14 V
Is the check result satisfactory?Go to step 5.Check air pump
assembly referring
to ªON-VEHICLE
SERVICEº, and then
ªPº circuit.
If OK, substitute a
known-good ECM
(PCM) and recheck.
5Check 4WD indicator lamp circuit.
1) Turn ignition switch ON.
2) Check voltage between E61-19 and C51-3-17
(ground) for G16 / J20 (C51-1-7 and C51-3-26
(ground) for H25). The check result should be as
follows.

When transfer shift lever is in 2H or N: 10 ± 14 V

When transfer shift lever is in 4L or 4H: 0 ± 1 V
Is the check result satisfactory?4WD control system
is in good condition.Check ªOr / Bº circuit
(including indicator
lamp and
combination meter).
If OK, substitute a
known-good ECM
(PCM) and recheck.

YH4
GRAND
VITARA
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

YH4
GRAND
VITARA
7E-10 DIFFERENTIAL (FRONT)
1. Plugged hose
2. Adjusting screw
3. Pipe (to air pump assembly)
4. Hose (to differential carrier)
5. Differential housing
4 5
INSPECTION
4WD Control System
1) Install special tool to air hose connecting between air pump as-
sembly and differential (actuator) as shown in figure. Tighten ad-
justing screw of special tool as far as it stops. Close air check
side opening by using fuel hose as blind plug.
Special Tool
(A): 09918-18110
(B): 09367-04002
NOTE:
Use care not to bend any part of hose.
2) Turn ON ignition switch and shift transfer lever from 2H to 4H
range.
3) Check that motor starts running (a sound can be heard) within
1 second and it stops when gauge of special tool indicates speci-
fied pressure value.
Check also for air leakage.
Pressure specification:
30.0 ± 45.0 kPa (0.30 ± 0.45 kg / cm
2, 4.25 ± 6.40 psi)
4) Check that pressure value indicated on gauge of special tool
drops as soon as transfer lever is shifted to 2H position.
5) Start motor by shifting transfer lever to 4H position again. Loos-
en adjusting screw to lower pressure value on gauge. Motor
should start to run again and stop in about 4 seconds.
6) With the adjusting screw of special tool loosened, shift transfer
shift lever to N or 2H position and then 4L or 4H position.
Pump motor should stop about 10 seconds after motor starts to
run.

YH4
GRAND
VITARA
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .