Gear shift SUZUKI SWIFT 2000 1.G Transmission Service Owner's Guide

7B-10 AUTOMATIC TRANSMISSION (4 A/T)
CHANGE MECHANISM
The same select pattern shift lever is used as the floor type and
frequently used “N” and “D” ranges are made selectable freely. Throttle position
signal circuit
(DTC P1700)No or abnormal throt-
tle opening signal is
inputtedScheduling of automatic gear shift is performed as throttle
valve opening is 0%.
Control of automatic gear shift (i.e. control of oil pressure) is
performed as throttle valve opening is 100%.
Coast down shifting is performed when brake is applied and
engine rev. is less than 1,500 rpm.
Lock-up function is turned OFF.
Transmission con-
trol system electri-
cal
(DTC P0702)Solenoid power sup-
ply relay output volt-
age is too high
although TCM orders
relay to turn off or
relay output voltage is
too low although TCM
orders relay to turn
on.When relay shorted, the gear is fixed as the followings and
lock-up function is turned OFF.
“P” range →
P, “R” range →
R, “N” range →
N,
“D” range →
3rd, “2” range →
2nd, “L” range →
1st
When relay open, power supply to all solenoids is cut and the
gear is fixed as the followings. Lock-up function is turned
OFF.
“P” range →
P, “R” range →
R, “N” range →
N,
“D”/“2”/“L” range →
3rd
Internal malfunc-
tion of TCM
(DTC P1702)Incorrect calculations
of checking TCM pro-
grammed data indi-
cated.Power supply to all solenoid is cut and the gear is fixed as fol-
lows :
“P” range P, “R” range R, “N” range N,
“D”/“2”/“L” range “3rd Area Detecting condition Fail safe function

AUTOMATIC TRANSMISSION (4 A/T) 7B-11
AUTOMATIC GEAR SHIFT DIAGRAM
Automatic shift schedule as a result of shift control is shown below.
[For 2WD model]
Gear Shift Diagram
TCC Lock-up Diagram
Shift
Throttle opening 1→
22→
33→
44→
33→
22→
1
Full throttle 44 98 - 135 87 35
Closed throttle 13 26 43 34 9 9

7B-12 AUTOMATIC TRANSMISSION (4 A/T)
[For 4WD model]
Gear Shift Diagram
TCC Lock-up Diagram
Shift
Throttle opening 1→
22→
33→
44→
33→
22→
1
Full throttle 40 90 143 124 80 32
Closed throttle 12 24 40 31 9 9

AUTOMATIC TRANSMISSION (4 A/T) 7B-19
TABLE 2 (MECHANICAL)
Condition Possible Cause Correction
Vehicle does not move
at any rangeManual valve faulty Clean or replace.
Primary regulator valve faulty Clean or replace.
No gear
change
1st
↔
↔↔ ↔ 2nd
Shift solenoid -D (No.4) and/or -E (No.5)
stuck Clean or replace.
2nd
↔
↔↔ ↔ 3rd
Shift solenoid -A (No.1), -C (No.3) and/or fail
valve No.1 stuckClean or replace.
3rd
↔
↔↔ ↔ 4th
Shift solenoid -B (No.2), -C (No.3) and/or fail
valve No.2 stuckClean or replace.
Harsh engagement
P, N
→
→→ → R
Front clutch accumulator faulty Clean or replace.
N
→
→→ → D
1st & 2nd brake accumulator faulty Clean or replace.
1st
→
→→ → 2nd at D
range or 2 rangeFront clutch accumulator faulty Clean or replace.
Shift solenoid -D (No.4) Clean or replace.
2nd
→
→→ → 3rd at D
rangeDirect clutch accumulator faulty Clean or replace.
Shift solenoid -E (No.5) Clean or replace.
3rd
→
→→ → 4th at D
rangeOverdrive brake accumulator faulty Clean or replace.
Shift solenoid -B (No.2) Clean or replace.
All gear change
Primary regulator valve faulty Clean or replace.
Excessive slip
(low line pressure)Primary regulator valve faulty Clean or replace.
Vehicle does not
move at
1st, 2nd, 3rd and
reverse gearRear clutch faulty Repair or replace.
Reverse gear
Reverse brake faulty Repair or replace.
2nd, 3rd and 4th
gearFront clutch faulty Repair or replace.
3rd and 4th gear
Direct clutch faulty Repair or replace.
1st and 2nd gear
1st & 2nd brake faulty Repair or replace.
4th gear
Overdrive brake faulty Repair or replace.
Any forward and
reverse gearParking lock pawl faulty Repair or replace.
Shock or engine stalls
when starting off and
stoppingTCC (lock-up clutch) faulty Inspect and replace as necessary.
TCC (lock-up) solenoid faulty Clean or replace.
Lock-up control valve faulty Clean or replace.
Lock-up signal valve faulty Clean or replace.
No up-shift
1st
→
→→ → 2nd
Front clutch faulty Repair or replace.
2nd
→
→→ → 3rd
Direct clutch faulty Repair or replace.
3rd
→
→→ → 4th
Overdrive brake faulty Repair or replace.
No engine
braking
2nd or 3rd gear
Front, rear or direct clutch or 1st & 2nd brake
faultyRepair or replace
L range 1st gear
Direct clutch or 1st & 2nd brake faulty Repair or replace.
No lock-up
Torque converter clutch faulty Inspect and replace as necessary.
Lock-up control valve faulty Clean or replace.
TCC (lock-up) solenoid faulty Clean or replace.
Secondary regulator valve faulty Clean or replace.
Signal valve faulty Clean or replace.

AUTOMATIC TRANSMISSION (4 A/T) 7B-23
ENGINE BRAKE TEST
1) While driving vehicle in 3rd gear of “D” range, shift select lever down to “2” range and check if engine brake
operates.
2) In the same way as in Step 1), check engine brake for operation when select lever is shifted down to “L”
range.
3) Engine brake should operate in above test.
“P” RANGE TEST
1) Stop vehicle on a slope, shift select lever to “P” range and at the same time apply parking brake.
2) After stopping engine, depress brake pedal and release parking brake.
3) Then, release brake pedal gradually and check that vehicle remains stationary.
4) Depress brake pedal and shift select lever to “N” range.
5) Then, release brake pedal gradually and check that vehicle moves.WARNING:
Before test, make sure that there is no vehicle behind so as to pre-
vent rear-end collision.
Test result Possible cause
Fails to operate when shifted down to “2”
rangeDefective shift switch
1st & 2nd brake defective
Direct clutch defective
Fails to operate when shifted down to “L”
range
WARNING:
Before test, check to make sure no one is around vehicle or
down on a slope and keep watchful for safety during test.
Test result Possible cause
Vehicle moves at “P” range or
remains stationary at “N” rangeDefective parking lock pawl or
spring

7B-28 AUTOMATIC TRANSMISSION (4 A/T)
DTC TABLE
DTC NO.
“O/D OFF” Lamp
Flashing Pattern of DTC
(Not using scan tool)DETECTING ITEMSMIL
Using
scan toolNot using
scan toolVehicle
equipped
with
immobi-
lizer indi-
cator lampVehicle
equipped
without
immobi-
lizer indi-
cator lamp
–12 Normal––
P0715 14Input/Turbine speed sensor circuit
malfunction1 driving
cycleNot
applicable
P0730 18 Incorrect gear ratio2 driving
cyclesNot
applicable
P075321
Shift solenoid-A (No.1) electrical1 driving
cycleNot
applicable
22
P075823
Shift solenoid-B (No.2) electrical1 driving
cycleNot
applicable
24
P0763 43 Shift solenoid-C (No.3) electrical1 driving
cycleNot
applicable
P0768 45 Shift solenoid-D (No.4) electrical1 driving
cycleNot
applicable
P0773 48 Shift solenoid-E (No.5) electrical1 driving
cycleNot
applicable
P074325
Torque converter clutch (lock-up)
system electrical1 driving
cycleNot
applicable
26

7B-30 AUTOMATIC TRANSMISSION (4 A/T)
TCM POWER AND GROUND CIRCUIT CHECK
1. Battery 4. Circuit fuse (IG) 7. TCM
2. Main fuse 5. Ground
3. Ignition switch 6. A/T relay
DTC DETECTING CONDITION
Automatic transmission doesn’t shift to 1st gear at vehicle start in “D” range.
Step Action Yes No
1 Check voltage between terminal “C44-2” of
TCM coupler and body ground with ignition
switch ON.
Is it 10 – 14 V?Go to Step 2. YEL/BLK wire open or
faulty
A/T relay.
2 Check voltage between terminal “C44-15” of
TCM coupler and body ground with ignition
switch ON.
Is it about 0 V?Poor “C44-2” or “C44-15”
connection.
If all above are OK,
replace known-good TCM
and recheck.“BLK” wire open.

AUTOMATIC TRANSMISSION (4 A/T) 7B-83
27) Remove counter driven gear assembly (1) and thrust needle
roller bearing (2).
28) Remove control shift lever (1), nuts (2), washer (3) from
manual shift shaft (4).
29) Remove detent spring (1).
30) Remove manual shift shaft (1) with parking lock rod (2), and
washer (3) from transmission case.

AUTOMATIC TRANSMISSION (4 A/T) 7B-125
26) Attach parking lock rod (2) to manual shift shaft (1).
27) Install manual shift shaft and washer (3) to transmission
case. Fix manual shift shaft with washer, control shift lever
(4) and two nuts (5).
Apply grease to the washers.
Tightening torque
Control shift lever nuts
(a) : 30 N·m (3.0 kg-m, 22.0 lb-ft)
“A” : Grease 99000-25030
28) Install detent spring (1) to transmission case.
Tightening torque
Detent spring bolt (a) : 11 N·m (1.1 kg-m, 8.0 lb-ft)
29) Install thrust needle roller bearing (2) on counter bearing (3).
30) Install counter driven gear (1).
31) Install parking lock pawl sleeve (1) and oil plate (not shown
in figure).
Tightening torque
Parking lock pawl sleeve bolt
(a) : 19 N·m (1.9 kg-m, 14.0 lb-ft)

7B-136 AUTOMATIC TRANSMISSION (4 A/T)
TIGHTENING TORQUE SPECIFICATION
Fastening partTightening torque
Nm kg-m lb-ft
A/T fluid drain plug 23 2.3 16.5
Transmission rage sensor bolt 18 1.8 13.0
Output shaft speed sensor bolt 8 0.8 6.0
Input shaft speed sensor bolt 8 0.8 6.0
Dropping resistor bolts 20 2.0 14.5
Shift solenoid bolts 8 0.8 6.0
Transmission temperature sensor bolt 10 1.0 7.5
Transmission to engine bolts and nut 85 8.5 61.5
Drive plate to torque converter bolts 20 2.0 14.5
Starter motor bolts 23 2.3 16.5
Oil pump cover bolts 10 1.0 7.5
Valve body bolts 5.5 0.55 4.0
Final gear bolts 90 9.0 65.0
Counter drive gear installing bolts 5.5 0.55 4.0
Rear cover bolts 19 1.9 14.0
Control shift lever nuts 30 3.0 22.0
Detent spring bolt 11 1.1 8.0
Parking lock pawl sleeve bolt 19 1.9 14.0
Parking lock pawl bolts 11 1.1 8.0
Oil pump assembly bolts 12 1.2 9.0
Torque converter housing bolts 19 1.9 14.0
Wire-to-solenoid assembly bolt 8 0.8 6.0
Valve body to transmission case bolts 10 1.0 7.5
A/T oil pan bolts 7.5 0.75 5.5
A/T oil cooler bolt 60 6.0 43.5
Vehicle speed sensor bolt 5.5 0.55 4.0
Shift cable bracket bolt 13 1.3 9.5
Connector clamp bracket bolt 8 0.8 6.0
A/T fluid filler tube bolt 19.5 1.95 14.5
Engine mounting LH bracket bolts 55 5.5 40.0