Diagnosis SUZUKI GRAND VITARA 1998 2.G Service Repair Manual

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
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.

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GRAND
VITARA
7A
MANUAL TRANSMISSION (TYPE 1) 7A-1
TYPE 1
GENERAL DESCRIPTION7A- 1 . . . . . . . . . . . . . .
DIAGNOSIS7A- 2 . . . . . . . . . . . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE7A- 3 . . . . . . . . . . . . . . . .
Gear Oil 7A- 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shift Control Levers 7A- 4. . . . . . . . . . . . . . . . . . .
Switches 7A- 6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Rear Mounting 7A- 8. . . . . . . . . . . . . . . .
Dismounting of Trans. Unit 7A- 9. . . . . . . . . . . . .
Remounting of Trans. Unit 7A-12. . . . . . . . . . . . . Extension Case (2WD MODEL) 7A-13. . . . . . . .
Extension Case Oil Seal
(2WD MODEL) 7A-13. . . . . . . . . . . . . . . . . . . . . .
UNIT REPAIR7A-14 . . . . . . . . . . . . . . . . . . . . . . . . .
TIGHTENING TORQUE
SPECIFICATIONS7A-14 . . . . . . . . . . . . . . . . . . . .
REQUIRED SERVICE MATERIALS7A-14 . . . . . .
SPECIAL TOOL7A-14 . . . . . . . . . . . . . . . . . . . . . . .
As the aluminum case is sealed with liquid type gas-
ket, it is necessary to use genuine sealant or its equiv-
alent on its mating surfaces when reassembling it.
Also, the case fastening bolts must be tightened to
specified torque by means of the torque wrench and
tightening over or below the specified torque should
be avoided.
The description under ON-VEHICLE SERVICE in this
section covers a part of the TYPE 2 manual transmis-
sion and the transfer. The transfer is next to the trans-
mission as well, but their gear boxes are independent
and each of them has its own drain and level / filler
plugs for the oil change or the level check.
For the repair procedure of the transfer unit, refer to
Section 7D.
SECTION 7A
MANUAL TRANSMISSION
(TYPE 1)
CONTENTS
GENERAL DESCRIPTION
The manual transmission consists of the input shaft,
main shaft, countershaft and reverse gear which are
installed in the aluminum case. Its gears are of for-
ward five speeds in synchro mesh and reverse one
speed in constant mesh system.
The main shaft gears are held by the needle bearings
and on them the synchronizer rings and synchronizer
sleeve & hubs are assembled.
The gear shift lever case is located at the upper be-
hind the transmission case and has a cam which pre-
vents direct gear shift from the 5th speed gear to the
reverse gear.

YH4
GRAND
VITARA
7A-2 MANUAL TRANSMISSION (TYPE 1)
DIAGNOSIS
ConditionPossible CauseCorrection
Gear slipping out of mesh
Worn shift fork shaft

Worn shift fork or synchronizer sleeve

Weak or damaged locating spring

Worn bearings on input shaft or main shaft

Worn chamfered tooth on sleeve or gear

Missing or disengagement of circlip(s)Replace
Replace
Replace
Replace
Replace sleeve and gear
Install
Gears refusing to disengage
Weakened or broken synchronizer spring

Distorted shift shaft or shift forkReplace
Replace
Hard shifting
Improper clutch pedal free travel

Distorted or broken clutch disc

Damaged clutch pressure plate

Worn synchronizer ring

Worn chamfered tooth on sleeve or gear

Distorted shift shaftAdjust
Replace
Replace clutch cover
Replace
Replace sleeve and gear
Replace
Noise
Inadequate or insufficient lubricant

Damaged or worn bearing(s)

Damaged or worn gear(s)

Damaged or worn synchronizer ring

Damaged or worn chamfered tooth on
sleeve or gearReplenish
Replace
Replace
Replace
Replace

YH4
GRAND
VITARA
7A1
MANUAL TRANSMISSION (TYPE 2) 7A1-1
TYPE 2
GENERAL DESCRIPTION7A1-1 . . . . . . . . . . . . . .
DIAGNOSIS7A1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE7A1-3 . . . . . . . . . . . . . . . .
Gear Oil 7A1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shift Control Levers 7A1-4. . . . . . . . . . . . . . . . . . .
Switches 7A1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Rear Mounting 7A1-4. . . . . . . . . . . . . . . . Dismounting / Remounting of
Trans. Unit 7A1-4. . . . . . . . . . . . . . . . . . . . . . . . .
UNIT REPAIR7A1-4 . . . . . . . . . . . . . . . . . . . . . . . . .
TIGHTENING TORQUE
SPECIFICATIONS7A1-5 . . . . . . . . . . . . . . . . . . . .
REQUIRED SERVICE MATERIALS7A1-5 . . . . . .
The manual transmission consists of the input shaft,
main shaft, counter shaft and reverse gear which are
installed in the aluminum and castings cases. Its
gears are of forward five speeds in synchro mesh and
reverse one speed in sliding idler gear arrangement
system.
The main shaft gears are held by the needle bear-
ings and on them the synchronizer rings and syn-
chronizer sleeve & hubs are assembled.
The gear shift lever case is located at the upper be-
hind the transmission case and has a cam which pre-
vents direct gear shift from the 5th speed gear to the
reverse gear.As the aluminum and castings cases are sealed with
liquid type gasket, it is necessary to use genuine seal-
ant or its equivalent on its mating surfaces when reas-
sembling them. Also, the case fastening bolts must be
tightened to specified torque by means of the torque
wrench and tightening over or below the specified
torque should be avoided.
The description under ON-VEHICLE SERVICE in this
section covers the transfer partially which is next to
the transmission as well, but their gear boxes are in-
dependent and each of them has its own drain and
level / filler plugs for the oil change or the level check.
For the repair procedure of the transfer unit, refer to
Section 7D.
SECTION 7A1
MANUAL TRANSMISSION
(TYPE 2)
CONTENTS
GENERAL DESCRIPTION

YH4
GRAND
VITARA
7A1-2 MANUAL TRANSMISSION (TYPE 2)
DIAGNOSIS
ConditionPossible CauseCorrection
Gear slipping out of mesh
Worn shift fork shaft

Worn shift fork or synchronizer sleeve

Weak or damaged locating spring

Worn bearings on input shaft or main shaft

Worn chamfered tooth on sleeve or gear

Missing or disengagement of circlip(s)Replace
Replace
Replace
Replace
Replace sleeve and gear
Install
Gears refusing to disengage
Weakened or broken synchronizer spring

Distorted shift shaft or shift forkReplace
Replace
Hard shifting
Improper clutch pedal free travel

Distorted or broken clutch disc

Damaged clutch pressure plate

Worn synchronizer ring

Worn chamfered tooth on sleeve or gear

Distorted shift shaftAdjust
Replace
Replace clutch cover
Replace
Replace sleeve and gear
Replace
Noise
Inadequate or insufficient lubricant

Damaged or worn bearing(s)

Damaged or worn gear(s)

Damaged or worn synchronizer ring

Damaged or worn chamfered tooth on
sleeve or gearReplenish
Replace
Replace
Replace
Replace

YH4
GRAND
VITARA
7B1
AUTOMATIC TRANSMISSION (4 A / T) 7B1-1
GENERAL DESCRIPTION7B1- 3 . . . . . . . . . . . . . .
CLUTCH / BRAKE FUNCTIONS 7B1- 5. . . . . . . . .
TABLE OF COMPONENT OPERATION 7B1- 6. . .
ELECTRONIC SHIFT CONTROL
SYSTEM 7B1- 7. . . . . . . . . . . . . . . . . . . . . . . . . . .
AUTOMATIC TRANSMISSION
DIAGNOSIS7B1-17 . . . . . . . . . . . . . . . . . . . . . . . . . .
PRECAUTION IN DIAGNOSING
TROUBLE 7B1-20. . . . . . . . . . . . . . . . . . . . . . . . . .
AUTOMATIC TRANSMISSION
DIAGNOSTIC FLOW TABLE 7B1-21. . . . . . . . . .
Customer Problem Inspection Form 7B1-23. . .
Malfunction Indicator lamp (MIL)
Check 7B1-24. . . . . . . . . . . . . . . . . . . . . . . . . . .
ªO / D OFFº Lamp Check 7B1-24. . . . . . . . . . . . .
ªPOWERº Lamp Check 7B1-24. . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC)
Check 7B1-24. . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC)
Clearance 7B1-24. . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) Table7B1-24 . . .
Fail-Safe Table 7B1-25. . . . . . . . . . . . . . . . . . . . .
Visual Inspection 7B1-26. . . . . . . . . . . . . . . . . . .
A / T Basic Check 7B1-27. . . . . . . . . . . . . . . . . . .
Trouble Diagnosis Table 1 7B1-28. . . . . . . . . . .
Trouble Diagnosis Table 2 7B1-28. . . . . . . . . . . Trouble Diagnosis Table 3 7B1-29. . . . . . . . . . .
Scan Tool Data 7B1-30. . . . . . . . . . . . . . . . . . . . .
Inspection of PCM and Its Circuit 7B1-30. . . . .
Wire Harness and Connectors 7B1-30. . . . . . . .
Diagnostic Flow Table A-1 7B1-31. . . . . . . . . . .
Diagnostic Flow Table A-2 7B1-33. . . . . . . . . . .
Table B-1 ªO / D OFFº Light Circuit
Check 7B1-35. . . . . . . . . . . . . . . . . . . . . . . . . . .
Table B-2 ªO / D OFFº Light Circuit
Check 7B1-36. . . . . . . . . . . . . . . . . . . . . . . . . . .
Table B-3 ªPOWERº Light Circuit
Check 7B1-37. . . . . . . . . . . . . . . . . . . . . . . . . . .
Table B-4 ªPOWERº Light Circuit
Check 7B1-38. . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0705 Transmission Range
Sensor (Switch) Circuit Malfunction 7B1-39. .
DTC P0715 Input / Turbine Speed
Sensor Circuit Malfunction 7B1-42. . . . . . . . . .
DTC P0720 Output Speed Sensor
Circuit Malfunction 7B1-44. . . . . . . . . . . . . . . . .
DTC P0741 TCC Solenoid Valve
Performance or Stuck Off 7B1-46. . . . . . . . . . .
DTC P0743 TCC Solenoid Electrical 7B1-47. .
DTC P0751 Shift Solenoid Valve-A (#1)
Performance or Stuck Off 7B1-49. . . . . . . . . . .
DTC P0756 Shift Solenoid Valve-B (#2)
Performance or Stuck Off 7B1-49. . . . . . . . . . .
SECTION 7B1
AUTOMATIC TRANSMISSION
(4 A
/
T)
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).
CONTENTS

YH4
GRAND
VITARA
1. Monitor connector
AUTOMATIC TRANSMISSION (4 A / T) 7B1-17
AUTOMATIC TRANSMISSION DIAGNOSIS
This vehicle is equipped with an electronic transmission control system, which control the automatic shift up and
shift down timing, TCC operation, etc. suitably to vehicle driving conditions.
PCM (ECM) has an On-Board Diagnosis system which detects a malfunction in this system and abnormality of
those parts that influence the engine exhaust emission.
When diagnosing a trouble in transmission including this system, be sure to have full understanding of the outline
of ªOn-board Diagnostic Systemº and each item in ªPrecaution in Diagnosing Troubleº and execute diagnosis ac-
cording to ªAUTOMATIC TRANSMISSION DIAGNOSTIC FLOW TABLEº given below to obtain correct result
smoothly.
NOTE:
There are two types of ON-BOARD DIAGNOSTIC SYSTEM de-
pending on vehicle specifications. The type of system for ve-
hicle being serviced can be identified by whether equipped
with monitor connector or not.

YH4
GRAND
VITARA
1. Malfunction indicator lamp (MIL)
2. Scan tool
3. DLC
4. Monitor connector
5. Diagnosis switch terminal
6. Ground terminal MIL
OFF
Time (sec.)
AUTOMATIC TRANSMISSION (4 A / T) 7B1-19
[For Vehicle with Monitor Connector]
ON-BOARD DIAGNOSTIC SYSTEM
For automatic transmission control system, PCM (ECM) has follow-
ing functions. Refer to Section 6 / 6-1 for details.

When the ignition switch is turned ON with the engine at a stop,
malfunction indicator lamp (MIL) turns ON to check the bulb of the
MIL.

When PCM detects a trouble in electronic shift control system, it
stores its trouble code in back-up memory in itself. (The memory
is kept as it is even if the trouble was only temporary and disap-
peared immediately. And it is not erased unless the power to PCM
is shut off for 30 seconds or longer.)

It is possible to communicate through DLC by using not only SU-
ZUKI scan tool (Tech-1) but also generic scan tool. (Diagnostic in-
formation can be accessed by using a scan tool.)

It is also possible to communicate by not using scan tool. PCM
indicates trouble area in memory by means of flashing of malfunc-
tion indicator lamp at the time of inspection (i.e. when diagnosis
switch terminal is grounded and ignition switch is turned ON).

YH4
GRAND
VITARA
7B1-20 AUTOMATIC TRANSMISSION (4 A / T)
PRECAUTION IN DIAGNOSING TROUBLE

Don't disconnect couplers from PCM (ECM), battery cable from battery, PCM ground wire harness from engine
or main fuse before checking the diagnosis information (DTC, freeze frame data, etc.) stored in PCM memory.
Such disconnection will clear memorized information in PCM memory.

Using SUZUKI scan tool (Tech-1), or also generic scan tool for vehicle without monitor connector, the diagnostic
information stored in PCM memory can be checked and cleared as well. Before its use, be sure to read Operator's
(instruction) Manual supplied with it carefully to have good understanding of its functions and usage.

Priorities for diagnosing troubles (Only for vehicle without monitor connector)
If two or more diagnostic trouble codes (DTCs) are stored, proceed to the flow table of the DTC which was de-
tected earliest in the order and follow the instruction in that table.
If no instructions are given, troubleshoot diagnostic trouble codes according to the following priorities.
1. Diagnostic trouble codes (DTCs) other than DTC P0171 / P0172 (Fuel system too lean / too rich) and DTC
P0400 (EGR flow malfunction)
2. DTC P0171 / P0172 (Fuel system too lean / too rich) and DTC P0400 (EGR flow malfunction)

Be sure to read ªPrecautions for Electrical Circuit Serviceº in Section 0A before inspection and observe what is
written there.

PCM replacement
When substituting a known-good PCM, check for following conditions.
Neglecting this check may result in damage to good PCM.
± All relays and actuators have resistance of specified value.
± MAF sensor, MDP sensor, TP sensor and fuel tank pressure sensor are in good condition. Also, the power
circuit of these sensors is not shorted to the ground.