2001 SUZUKI GRAND VITARA Owners Manual

7A1-2 MANUAL TRANSMISSION

AUTOMATIC TRANSMISSION (4 A/T) 7B1-1
7B1
SECTION 7B1
AUTOMATIC TRANSMISSION (4 A/T)
CONTENTS
General Description ......................................7B1-3
Electronic Shift Control System ................... 7B1-4
Automatic gear shift diagram................... 7B1-5
Diagnosis .......................................................7B1-7
On-Board Diagnostic System
(Vehicle without monitor connector) ............ 7B1-7
On-Board Diagnostic System
(Vehicle with monitor connector) ................. 7B1-8
Precaution in Diagnosing Trouble ............... 7B1-9
Automatic Transmission Diagnostic Flow
Table ......................................................... 7B1-10
Malfunction Indicator Lamp (MIL) Check... 7B1-13
“O/D OFF” Lamp Check ............................ 7B1-13
“POWER” Lamp Check ............................. 7B1-13
Diagnostic Trouble Code (DTC) Check ..... 7B1-13
Diagnostic Trouble Code Clearance ......... 7B1-13
Diagnostic Trouble Code Table ................. 7B1-14
Fail Safe Table .......................................... 7B1-14
Visual Inspection ....................................... 7B1-14
A/T Basic Check ........................................ 7B1-14
Trouble Diagnosis Table 1 ........................ 7B1-15
Trouble Diagnosis Table 2 ........................ 7B1-15
Trouble Diagnosis Table 3 ........................ 7B1-16
Scan Tool Data ......................................... 7B1-17
Inspection of PCM and Its Circuit .............. 7B1-17Wire Harness and Connectors .................. 7B1-17
Table A-1 : No TCC Lock-Up Occurs ........ 7B1-18
Table A-2 : No Gear Shift to O/D .............. 7B1-20
Table B-1 : “O/D OFF” Light Circuit Check
(“O/D OFF” Light Doesn’t Light at Ignition
Switch ON But Engine Starts Up) ............. 7B1-22
Table B-2 : “O/D OFF” Light Circuit Check
(“O/D OFF” Light Comes ON Steadily) ..... 7B1-23
Table B-3 : “POWER” Light Circuit Check
(“POWER” Light Doesn’t Light at Ignition
Switch ON But Engine Starts Up) ............. 7B1-24
Table B-4 : “POWER” Light Circuit Check
(“POWER” Light Comes ON Steadily) ...... 7B1-25
DTC P0705 (DTC NO.72) - Transmission
Range Sensor (Switch) Circuit Malfunction7B1-26
DTC P0715 (DTC NO.76) - Input/Turbine
Speed Sensor Circuit Malfunction............. 7B1-29
DTC P0720 (DTC NO.75) Output Speed
Sensor Circuit Malfunction ........................ 7B1-32
DTC P0743 (DTC NO.65/66) -
TCC (Lock-Up) Solenoid Electrical ........... 7B1-34
DTC P0753 (DTC NO.61/62)
Shift Solenoid-A (#1) Electrical
DTC P0758 (DTC NO.63/64)
Shift Solenoid-B (#2) Electrical ................. 7B1-36 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
authorized SUZUKI dealer. Refer to “Air Bag System Components and Wiring Location View” under
“General Description” in air bag system section in order to confirm whether you are performing ser-
vice on or near the air bag system components or wiring. Please observe all WARNINGS and “Ser-
vice Precautions” under “On-Vehicle Service” 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
“LOCK” 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).
NOTE:
For the descriptions (items) not found in this section, refer to the same section of the Service Manual
mentioned in FOREWORD of this manual.

7B1-2 AUTOMATIC TRANSMISSION (4 A/T)
Stall Test ................................................... 7B1-38
Line Pressure Test .................................... 7B1-39
Road Test ................................................. 7B1-40
Manual Road Test..................................... 7B1-41
Time Lag Test ........................................... 7B1-41
Engine Brake Test .................................... 7B1-42
“P” Range Test.......................................... 7B1-42
On-Vehicle Service ..................................... 7B1-43
Maintenance Service ................................ 7B1-43
Fluid level .............................................. 7B1-43
Fluid change.......................................... 7B1-44
A/T Throttle Cable ..................................... 7B1-45Solenoid Valves (Shift Solenoid Valves
and TCC Solenoid Valve) ......................... 7B1-45
MANUAL SELECTOR ASSEMBLY .......... 7B1-46
SELECT CABLE ....................................... 7B1-48
Unit Repair .................................................. 7B1-49
Sub-Assembly Repair ............................... 7B1-49
Overdrive (case side) ............................ 7B1-49
Forward clutch ...................................... 7B1-50
Front upper valve body ......................... 7B1-54
Unit Assembly ........................................... 7B1-59
Tightening Torque Specification............... 7B1-60
Special Tool ................................................ 7B1-61

AUTOMATIC TRANSMISSION (4 A/T) 7B1-3
General Description
Item Specifications
Torque
converterType 3-element, 1-step, 2-phase type (with TCC (lock-up) mechanism)
Stall torque ratio 2.0
Oil pump Type Trochoid type oil pump
Drive system Engine driven
Gear
change
deviceType Forward 4-step, reverse 1-step planetary gear type
Shift position“P” range Gear in neutral, output shaft fixed, engine start
“R” range Reverse
“N” range Gear in neutral, engine start
“D” range
(O/D ON)Forward 1st ↔ 2nd ↔ 3rd ↔ 4th (O/D)
automatic gear change
“D” range
(O/D OFF)Forward 1st ↔ 2nd ↔ 3rd
automatic gear change
“2” range (Normal mode) Forward 1st ↔ 2nd ← 3rd auto-
matic gear change
(Power mode) Forward 2nd ← 3rd automatic gear
change and fixed at 2nd gear
“L” range Forward 1st ← 2nd ← 3rd reduction, and fixed at
1st gear
Gear
ratio1st
(low gear)2.826
2nd
(second gear)1.493
3rd
(top gear)1.000
4th
(overdrive gear)0.689
Reverse
(reverse gear2.703
Control elements Wet type multi-disc clutch ... 3 sets
Wet type multi-disc brake ... 4 sets
One-way clutch ... 3 sets
Transfer Hi : 1.000
Lo : 1.816 (4WD model only)
Final gear reduction
ratio (Differential)5.125
Lubrication Lubrication system Force feed system by oil pump
Cooling Cooling system Radiator assisted cooling (water-cooled)
Fluid used
An equivalent of DEXRON
III

7B1-4 AUTOMATIC TRANSMISSION (4 A/T)
Electronic Shift Control System
1. PCM (ECM) 9. Transmission range sensor 17. MIL (“SERVICE ENGINE SOON” lamp)
2. VSS 10. Shift solenoid-A 18. O/D off switch
3. CMP sensor 11. Shift solenoid-B 19. P/N change switch
4. TP sensor 12. TCC solenoid 20. 4WD low switch
5. ECT sensor 13. Data link connector 21. Main relay
6. Stop lamp switch 14. Cruise control module 22. Ignition switch
7. Input shaft speed sensor 15.“POWER” lamp 23. Battery
8. Output shaft speed sensor 16.“O/D OFF” lamp 24. PCM (ECM) connector terminal (viewed from harness side)
5V
5V5V
5V5V
5V
5V 5V C51-1-14
C51-1-12
C51-1-13
C51-3-26
C51-3-12
C51-3-13
C51-3-9
C51-3-2
C51-3-24
C51-1-11
C51-1-10
C51-1-20 C51-1-21
C51-1-23
C51-1-22
C51-1-7
C51-1-6
C51-1-19
C51-1-18
C51-1-28
C51-1-27
C51-1-2
C51-1-1
C51-1-8
E61-13
E61-35
E61-4C51-1-26 E61-31 E61-33 E61-21 E61-20 E61-7
C51-3-20
E61-2
E61-9
C51-3-4
C51-3-15
C51-3-6
C51-3-17
C51-2-7
12V
12V 12V 12V
12V
12V
12V
12V
5V
12V
BLU/YEL
YEL/GRN
YEL/BLU
GRY/YEL
GRY/YEL
GRY/RED
RED/GRN
ORN/BLU
GRY/YEL
BLU/YEL
BLU/GRN
WHT
ORN
ORN/GRN
RED P
R
N
D
2
LORN/BLU
YEL/GRN
GRN/ORN
GRN/BLU
GRN
GRN/RED
GRN/YEL
PPL/RED
PNK/BLU
GRY
PPL/YEL
WHT/BLK
GRY/BLU
YEL/RED
ORN/BLU
WHT
BLU
BLU/BLK
BLU/BLK
BLK/GRN
BLK/ORN
BLK/GRNBLK/WHT ORN/WHT
8
7
23 22
35 346
20 21
335
19
3218
3117
3016 15
2914
284
13
273
12
26112
10
256
5
17 16
26 252
1
98
21 202
1
98
22 21 1
9
247
20
306
19
2918
27 17
2816 15
2614
25 5
13 4
12
24113
10
23 7
19
28654 3
18
2717 16
2615 14
2513
2412
2311
2210 4
15 14
2413
2312
2211 10 9 8 7
213
202
191
18
24
E61 C51-3 C51-1 C51-2 14
13
B+
B+
17
16
15
18
19
20
22
21
23
BB+
IG1
B+
IG2
1 2
3
4
5
7 6
8
IG1
9
10
11
12
BB+
E61-34 GRN/WHT
BB+

AUTOMATIC TRANSMISSION (4 A/T) 7B1-5
Automatic gear shift diagram
Automatic shift schedule as a result of shift control is shown below. In case that select lever is shifted to L at a
higher than 55 km/h or 34 mile/h speed, 2nd or 3rd gear is operated and then down shifts to 1st at a speed lower
than that. No up shift is available in L.
The same as, the select lever is shifted to 2 at a higher than 105 km/h (65 mile/h) speed, 3rd gear is operated
and then down shifts to 2nd at a speed lower than that.
[POWER MODE]
GEAR SHIFT DIAGRAM [A] AND TCC LOCK-UP DIAGRAM [B]
Shift
1 →
→→ → 22 →
→→ → 33 →
→→ → 44 →
→→ → 33 →
→→ → 22 →
→→ → 1
Throttle
openingFull throttle km/h (mile/h) 46
(29)93
(58)160
(100)150
(94)83
(52)36
(23)
Closed throttle km/h (mile/h) 16
(10)30
(19)45
(28)38
(16)24
(11)7
(4)

7B1-6 AUTOMATIC TRANSMISSION (4 A/T)
[NORMAL MODE]
GEAR SHIFT DIAGRAM [A] AND TCC LOCK-UP DIAGRAM [B]
Shift
1 →
→→ → 22 →
→→ → 33 →
→→ → 44 →
→→ → 33 →
→→ → 22 →
→→ → 1
Throttle
openingFull throttle km/h (mile/h) 46
(29)93
(58)160
(100)150
(94)83
(52)36
(23)
Closed throttle km/h (mile/h) 11
(7)27
(17)40
(25)35
(22)21
(13)7
(4)

AUTOMATIC TRANSMISSION (4 A/T) 7B1-7
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 the transmission including this system, be sure to have full understanding of the
outline of “ON-BOARD DIAGNOSTIC SYSTEM” and each item in “PRECAUTION IN DIAGNOSING TROUBLE”
and execute diagnosis according to “AUTOMATIC TRANSMISSION DIAGNOSTIC FLOW TABLE” to obtain
correct result smoothly.
On-Board Diagnostic System (Vehicle without
monitor connector)
For automatic transmission control system, PCM (ECM) has fol-
lowing functions. Refer to Section 6-1 for details.
•When the ignition switch is turned ON with the engine at a
stop, malfunction indicator lamp (MIL) (1) turns ON to check
the bulb of the MIL.
•When PCM detects a malfunction in A/T control system
(and/or a malfunction which gives an adverse effect to vehi-
cle emission) while the engine is running, it makes the mal-
function indicator lamp in the meter cluster of the instrument
panel turn ON and stores the malfunction area.
(If it detects that continuously 3 driving cycles are normal
after detecting a malfunction, however, it makes MIL (1) turn
OFF although DTC stored in its memory will remain.)
•It is possible to communicate through DLC (3) by using not
only SUZUKI scan tool (2). (Diagnostic information can be
accessed by using a scan tool (2).)
2 DRIVING CYCLE DETECTION LOGIC
Refer to Section 6-1 for details.
PENDING DTC
Refer to Section 6-1 for details.
FREEZE FRAME DATA
Refer to Section 6-1 for details.