Isc SUZUKI SWIFT 2000 1.G SF310 Service Workshop Manual

7B-30 AUTOMATIC TRANSMISSION (3 A / T) (VEHICLE WITH WU-TWC)
TABLE A-1 NO STARTING OR SLIPPING IN ANY DRIVE RANGE
STEPACTIONYESNO
1Was “AUTOMATIC TRANSMISSION DIAGNOSTIC
FLOW TABLE” performed?Go to Step 2.Go to
“AUTOMATIC
TRANSMISSION
DIAGNOSTIC FLOW
TABLE”.
2Is engine rpm at stall test normal?Transmission
failure.Go to Step 3.
3Is engine rpm at stall test too low in any range?Poor engine power or
torque converter
defective.Go to Step 4.
4Is engine rpm at stall test too high only in “D” range?Go to Step 7.Go to Step 5.
5Is engine rpm at stall test too high only in “R” range?Go to Step 9.Go to Step 6.
6Is line pressure proper?Transmission failure.Oil pump defective,
Regulator valve
operation failure,
Throttle valve
operation failure or
Accelerator cable
and oil pressure
control cable
maladjusted.
7Does engine rpm at stall test become normal when
coupler of solenoid valve wire is disconnected?One-way clutch
operation failure.Go to Step 8.
8Is line pressure proper?Forward clutch worn.Oil leak in forward
clutch oil circuit or Oil
leak in “D” range oil
circuit.
9Does engine rpm at stall test become normal when
coupler of solenoid valve wire is disconnected?1st-Reverse brake
worn.Go to Step 10.
10Is line pressure proper?Direct clutch worn.Oil leak in direct
clutch oil circuit or Oil
leak in “R” range oil
circuit.

AUTOMATIC TRANSMISSION (3 A / T) (VEHICLE WITH WU-TWC) 7B-31
TABLE A-2 GEAR CHANGE FAILURE
STEPACTIONYESNO
1Was “AUTOMATIC TRANSMISSION DIAGNOSTIC
FLOW TABLE” performed?Go to Step 2.Go to “AUTOMATIC
TRANSMISSION
DIAGNOSTIC FLOW
TABLE”.
2Disconnect solenoid valve wire coupler and perform
manual road test.
Is upshift from 1st to 2nd possible?Go to Step 3.1-2 shift valve sticks
or Shift solenoid-B
(2nd brake solenoid)
valve sticks.
3Is upshift from 2nd to 3rd possible?Gear shift control
system defective.
Go to A / T Diagnostic
Flow Table B.2-3 shift valve sticks
or Shift solenoid-A
(Direct clutch
solenoid) valve
sticks.
TABLE A-3 EXCESSIVE SHOCK AT RANGE SELECTION OR GEAR CHANGE
STEPACTIONYESNO
1Was “AUTOMATIC TRANSMISSION DIAGNOSTIC
FLOW TABLE” performed?Go to Step 2.Go to “AUTOMATIC
TRANSMISSION
DIAGNOSTIC FLOW
TABLE”.
2Is line pressure proper?Go to Step 3.Regulator valve
defective, Throttle
valve defective or
Accelerator cable
maladjusted.
3Does excessive shock occur when selecting “D” range
from “N” range?Forward clutch
accumulator
operation failure,
Forward clutch worn
or Forward clutch oil
circuit check ball
operation failure. Go to Step 4.
4Does excessive shock occur when selecting “R” range
from “N” range?1st-Reverse brake
worn, 1st-Reverse
brake oil circuit check
ball operation failure.Go to Step 5.
5Does excessive shock occur at 1st to 2nd gear
change?2nd brake
accumulator
defective, 2nd brake
worn, 2nd brake oil
circuit check ball
operation failure.In case of excessive
shock at 2nd to 3rd
gear change, Direct
clutch worn or Direct
clutch oil circuit check
ball operation failure.

AUTOMATIC TRANSMISSION (3 A / T) (VEHICLE WITH WU-TWC) 7B-35
ROAD TEST
This test is to check if upshift and downshift take place at specified
speeds while actually driving vehicle on a level road.
WARNING:

Carry out the test in very little traffic area to prevent an ac-
cident.

The test requires 2 persons, a driver and a tester.
1) Warm up engine.
2) With engine running at idle, shift selector lever to D range.
3) i) Accelerate vehicle speed by depressing accelerator pedal
very little (within 4 deg. of throttle valve opening).
ii) Check if upshift takes place from 1st to 2nd at about 18 km / h
(11 mile / h) and from 2nd to 3rd at about 30 km / h (19 mile / h).
iii)
[For G10 Engine Model]
Stop vehicle once. Then start it again and while accelerating
by depressing accelerator pedal fully, check if upshift takes
place from 1st to 2nd at 52 km / h (33 mile / h) and from 2nd to
3rd at 97 km / h (61 mile / h).
[For G13 Engine Model]
Stop vehicle once. Then start it again and while accelerating
by depressing accelerator pedal fully, check if upshift takes
place from 1st to 2nd at 58 km / h (36 mile / h) and from 2nd to
3rd at 110 km / h (69 mile / h).
iv) Stop vehicle again.
v) Start vehicle and keep it running at 25 km / h (15 mile / h) and
then release accelerator pedal completely. 1 or 2 seconds lat-
er, depress accelerator pedal fully and check if downshift
from 2nd to 1st takes place.
vi) Keep vehicle running at 75 km / h (47 miles / h) and in the
same way as in step v), check if downshift from 3rd to 2nd
takes place.
vii) If upshift or downshift fails to take place at each specified
speed in the road test, possible causes for such failure are as
follows. Check each part which is suspected to be the cause.
Condition
Possible causes
No upshift from 1st
to 2nd
1 – 2 shift valve defective

2nd brake solenoid valve defective

PCM defective, or disconnection or
poor connection in electric circuit
No upshift from
2nd to 3rd
2-3 shift valve defective

Direct clutch solenoid valve defective

PCM defective, or disconnection or
poor connection in electric circuit
No downshift from
2nd to 1st or 3rd to
2nd
Throttle position sensor defective

PCM defective, or disconnection or
poor connection in electric circuit

1. Solenoid valve wire coupler (Disconnected)
2. Transmission
7B-36 AUTOMATIC TRANSMISSION (3 A / T) (VEHICLE WITH WU-TWC)
MANUAL ROAD TEST
This test checks the gears being used in L, 2 or D range when driven
with unoperated gear shift control system.
Test drive vehicle on a level road.
1) With selector lever in P range, start engine and warm it up.
2) After warming up engine, disconnect coupler of solenoid valve
wire as shown in left figure.
3) With selector lever in L range, start vehicle and accelerate to
30 km / h (19 mile / h). Check in this state that 1st gear is being
used.
4) At 30 km / h (19 mile / h), shift selector lever to 2 range and accel-
erate to 60 km / h (37 mile / h).
Check in this state that 2nd gear is being used.
5) At 60 km / h (37 mile / h), shift selector lever to D range and check
that 3rd gear is used when speed is higher than 60 km / h
(37 mile / h).
6) After above checks, stop vehicle then engine, and connect sole-
noid valve wire coupler.
ENGINE BRAKE TEST
WARNING:
Before test, make sure that there is no vehicle behind so as
to prevent rear-end collision.
1) While driving vehicle in 3rd gear of D range, shift selector 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 selector lever is shifted down to L range.
3) If engine brake fails to operate in above tests, possible cause for
such failure are as follows.
Check each part which is suspected to be the cause.
Condition
Possible causes
Fails to operate when
shifted down to 2 rangeSecond brake defective
Fails to operate when
shifted down to L range1st-reverse brake defective

1. PCM coupler disconnected
AUTOMATIC TRANSMISSION (3 A / T) (VEHICLE WITH WU-TWC) 7B-39
TRANSMISSION RANGE SENSOR CHECK
Check transmission range sensor referring to Step 2 of DTC P0705
Flow Table.
OUTPUT SHAFT SPEED SENSOR CHECK
1) Turn OFF ignition switch.
2) Disconnect coupler(s) from powertrain control module.
3) Bring ohmmeter probes in touch with coupler terminals from har-
ness side.
4) Check resistance of output shaft speed sensor.
Resistance between terminals
C03-2 and C03-13
(For G10 engine model)
C03-2 and C03-8
(For G13 engine model) : 100 – 300 Ω
Resistance between terminal
and ground : 1 MΩ or more
If resistance are out of specification, check wire harness and
connector for open or short and output shaft speed sensor itself
for resistance.
If resistance are within above specifications, proceed to next
step.
5) Visually check output shaft speed sensor and counter shaft gear
for the following:

No damage

No foreign material attached

Correct installation
If any malfunction is found, clean, repair or replace.

1. Output shaft speed sensor
1. PCM coupler disconnected
7B-40 AUTOMATIC TRANSMISSION (3 A / T) (VEHICLE WITH WU-TWC)
Separately from the above inspection, output shaft speed sensor
itself can be checked on its resistance by disconnecting coupler.
NOTE:

Function of output shaft speed sensor can be checked by
measuring generated pulse as voltage.

For its measurement, use an analog type voltmeter while
spinning wheels on lift and with selector lever in “D” range.
Output shaft speed sensor specifications
Coil resistance100 – 300 Ω
Output voltage at 40 km / h
(25 mile / h)Approximately 1 V
SHIFT SOLENOID VALVE CIRCUIT CHECK
1) With ignition switch turned OFF, disconnect PCM couplers.
2) Bring ohmmeter probes in touch with coupler terminals from har-
ness side and measure each resistance.
Resistance between C02-9 and C02-1
for G10 engine model (C03-4 and
C01-1 for G13 engine model)
(Shift solenoid-A, direct clutch) : 8 – 20 Ω
Resistance between C02-8 and C02-1
for G10 engine model (C03-11 and
C01-1 for G13 engine model)
(Shift solenoid-B, 2nd brake) : 8 – 20 Ω
If resistance is out of specification, check shift solenoid itself for
resistance (referring to Step 3 of DTC P0753 / P0756 Flow Table)
and wire harness for open or short.
If resistance is within specification, proceed to step 3).

1. Solenoid valve wire coupler
2. Terminal for shift solenoid-A. (direct clutch solenoid)
3. Terminal for shift solenoid-B. (2nd brake solenoid)
4. 12 V battery
5. Shift solenoid-B. (2nd brake solenoid valve)
6. Shift solenoid-A. (Direct clutch solenoid valve)
AUTOMATIC TRANSMISSION (3 A / T) (VEHICLE WITH WU-TWC) 7B-41
3) Disconnect shift solenoid valve coupler from harness.
4) Apply 12 V to each terminal in solenoid valve coupler and check
to be sure that a click sound is heard from each of shift sole-
noid-A and -B.
If no click sound is heard, check lead wire and connections in oil
pan, and then replace applicable shift solenoid-A or B if wire and
connections are in good condition.
If click sound is heard from each of shift solenoids A and B, shift
solenoid electrical circuits are in good condition. Proceed to
“SHIFT SOLENOID VALVE CHECK” previously described in
this section.
THROTTLE POSITION SENSOR CHECK
Check throttle position sensor and its circuit referring to DTC P0121
Flow Table in Section 6 or 6-1.

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 “Air Bag System Components and Wiring Location View” under “Gener-
al Description” 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 “Service Precau-
tions” 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 men-
tioned in the FOREWORD of this manual.
CONTENTS
GENERAL DESCRIPTION8-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Combination Meter8-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keyless Entry System (If Equipped) 8-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSIS8-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keyless Entry System (If Equipped) 8-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE8-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Coolant Temp. (ECT) Meter and Sensor 8-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keyless Entry System (If Equipped) 8-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. Slot
1. To power door lock controller (Unlock)
2. To power door lock controller (Lock)
3. To IG switch
5. To door switch
6. To GND
8. To battery
8-4 BODY ELECTRICAL SYSTEM
KEYLESS ENTRY SYSTEM (IF EQUIPPED)
TRANSMITTER
REPLACEMENT OF THE BATTERY
If the transmitter becomes unreliable, replace the battery.
As the battery power is consumed, the operation distance will be
shorter.
1) Put the edge of a coin or a flat blade screw driver in the slot of
the transmitter and pry it open.
2) Replace the battery (lithium disc-type CR2025 or equivalent) so
its (+) terminal faces the “+” mark of the transmitter.
CAUTION:
Use care not to allow grease or dirt to be attached on the
printed circuit board and the battery.
3) Close the transmitter firmly.
4) Make sure the door locks can be operated with the transmitter.
NOTE:

To prevent theft, be sure to break the transmitter before
discarding it.

Dispose of the used battery properly according to appli-
cable rules or regulations. Do not dispose of lithium bat-
teries with ordinary household trash.
RECEIVER
INSPECTION
Using a tester, check for continuity and voltage between each termi-
nal of the connector connected to the receiver and the body ground
at the following condition.
TerminalCheck forConditionStandard
value
1Continuity
Unlock the driver’s seat
side door by using the
key.No continuity

Continuity
2ContinuityLock the driver’s seat side
door by using the key.No continuity

Continuity
3Voltage
Insert the ignition key and
turn ON the ignition
switch.
0 V
10 – 14 V
5VoltageOpen any one of all
closed doors.10 – 14 V
0 V
6ContinuityAnytimeContinuity
8VoltageAnytime10 – 14 V

8G
IMMOBILIZER CONTROL SYSTEM 8G-1
GENERAL DESCRIPTION8G- 2 . . . . . . . . . . . . . .
On-Board Diagnostic System
(Self-Diagnosis Function) 8G- 4. . . . . . . . . . . . .
DIAGNOSIS8G- 6 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precautions in Diagnosing
Troubles 8G- 6. . . . . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSTIC FLOW TABLE 8G- 8. . . . . . . . . . . . .
Diagnostic Trouble Code Check
(Immobilizer Control Module) 8G-10. . . . . . . . .
Diagnostic Trouble Code Check (ECM) 8G-10. .
Diagnostic Trouble Code Table 8G-12. . . . . . . . .
A-1 Code (DTC) is not Outputted
from Diagnostic Output Terminal
of Immobilizer Diagnostic Coupler 8G-13. . . . . A-2 Immobilizer Indicator Lamp Check
(Immobilizer Indicator Lamp does not
Light at Ignition Switch ON) 8G-14. . . . . . . . . . .
A-3 Immobilizer Indicator Lamp Check
(Immobilizer Indicator Lamp Remains
ON after Engine Starts) 8G-15. . . . . . . . . . . . . .
HOW TO REGISTER IGNITION KEY8G-16 . . . . .
PROCEDURE AFTER IMMOBILIZER
CONTROL MODULE REPLACEMENT8G-17 . .
PROCEDURE AFTER ECM
REPLACEMENT8G-18 . . . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOLS8G-18 . . . . . . . . . . . . . . . . . . . . . .
SECTION 8G
IMMOBILIZER CONTROL 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 “Air Bag System Components and Wiring Location View” under “Gener-
al Description” 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 “Service Precau-
tions” 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:

Whether the immobilizer indicator lamp is used in the particular vehicle or not depends on specifica-
tions. If there is a monitor coupler in the engine room near the left strut assembly, the vehicle is not
equipped with immobilizer indicator lamp and if there isn’t, it is equipped with immobilizer indicator
lamp.

For the descriptions (items) not found in this section, refer to the section 8G of the Service Manual men-
tioned in FOREWORD of this manual.
CONTENTS