SUZUKI SWIFT 2000 1.G Transmission Service Manual Online

AUTOMATIC TRANSMISSION (4 A/T) 7B-39
Figure for Step 1, 2
Figure for Step 2, 33 1) Turn ignition switch OFF and disconnect
output shaft speed sensor – input shaft
speed sensor coupler. (See figure.)
2) Measure resistance between terminal “3”
(of disconnected sensor side coupler) and
body ground then terminal “4” (of discon-
nected sensor side coupler) and body
ground.
Is it about 0 Ω
?
(See figure.)Replace output shaft
speed sensor.Go to Step 4.
4 1) Turn ignition switch OFF and connect out-
put shaft speed sensor coupler then discon-
nect TCM couplers.
2) Measure resistance between terminal “C43-
6” (of disconnected harness side coupler)
and body ground then terminal “C43-14” (of
disconnected harness side coupler) and
body ground.
Is it about 0 Ω
?
(See figure.)“WHT” or “BLK” wire
shorted to ground.Go to Step 5.
5 Measure resistance between terminal “C43-6”
and “C43-13” (of disconnected harness side
coupler) then terminal “C43-14” and “C43-13”
(of disconnected harness side coupler).
Is it about 0 Ω
?
(See figure.)“WHT” wire or “BLK” wire
shorted to shield portion.Poor connection of termi-
nal “C43-6” or “C43-14” of
the TCM.
If all the above are in
good condition, substitute
a known-good TCM and
recheck. Step Action Yes No
1. Output shaft speed sensor
2. Input shaft speed sensor coupler
1. Terminal “3”
2. Terminal “4”

7B-40 AUTOMATIC TRANSMISSION (4 A/T)
Figure for Step 2, 5
Figure for Step 4
1.“C43-14” terminal
2.“C43-6” terminal
3.“C43-13” terminal
4. TCM coupler
1.“C43-14” terminal
2.“C43-6” terminal
3. TCM coupler

AUTOMATIC TRANSMISSION (4 A/T) 7B-41
DTC P1700 (DTC NO.32/33) THROTTLE POSITION SIGNAL INPUT MALFUNCTION
1. Throttle position (TP) sensor 4. TCM coupler (viewed from harness side)
2. ECM 5. ECM coupler (viewed from harness side)
3. TCM
DTC DETECTING CONDITION
NO or abnormal throttle opening signal inputted.
Step Action Yes No
1 Check DTC of “ENGINE DIAGNOSIS” referring
to Section 6.
Is there DTC related to throttle position sensor
detected?Inspect and repair refer-
ring to DTC flow table of
“ENGINE DIAGNOSIS” in
Section 6.Go to Step 2.
2 Is DTC No.33? Go to Step 4. Go to Step 3.
3 Is DTC No.32? Go to Step 5. Go to Step 5.
(When DTC is P1700.)
4 1) Turn ignition switch OFF and disconnect
ECM couplers.
2) Turn ignition switch ON and check voltage
between terminal “C41-21” of disconnected
harness side ECM coupler and body
ground.
Is it 10 – 14 V?Poor connection of termi-
nal “C41-21” of ECM cou-
pler.
If connection is OK, sub-
stitute a known-good
ECM and recheck.“PPL” wire open or poor
connection of terminal
“C43-8” of TCM coupler.
If wire and connection are
OK, substitute a known-
good TCM and recheck.

7B-42 AUTOMATIC TRANSMISSION (4 A/T)
5 1) Turn ignition switch OFF and disconnect
ECM couplers.
2) Turn ignition switch ON and check voltage
between terminal “C41-21” of disconnected
harness side ECM coupler and body
ground.
Is it 10 – 14 V?Go to Step 7. Substitute a known-good
TCM and recheck.
6 1) Check for proper connection of terminal
“C41-21” of ECM coupler.
2) If OK, turn ignition switch OFF and discon-
nect ECM couplers.
3) Turn ignition switch ON and check voltage
between terminal “C41-21” of disconnected
harness side ECM coupler and body
ground.
Is it 10 – 14 V?Go to Step 7.“PPL” wire open or poor
connection of terminal
“C43-8” of TCM coupler.
If wire and connection are
OK, substitute a known-
good TCM and recheck.
7 1) Turn ignition switch OFF and disconnect
TCM couplers.
2) Check resistance between terminal “C43-8”
of disconnected harness side TCM coupler
and body ground.
Is it infinity?Intermittent trouble or
faulty ECM.
Check for intermittent
referring to “INTERMIT-
TENT AND POOR CON-
NECTION” in Section 0A.
If no trouble found, substi-
tute a known-good ECM
and recheck.“PPL” wire shorted to
ground. Step Action Yes No

AUTOMATIC TRANSMISSION (4 A/T) 7B-43
DTC P0705 (DTC NO.34) TRANSMISSION RANGE SENSOR (SWITCH) CIRCUIT MALFUNC-
TION
1. Transmission range sensor (shift switch) 3. TCM coupler (viewed from harness side)
2. TCM 4. Power source
DTC DETECTING CONDITION
No shift switch signal inputted or two or more shift switch signals inputted at the same time.
Step Action Yes No
1 1) Turn ignition switch OFF, disconnect TCM
coupler.
2) Turn ignition switch ON, check voltage
between terminal “C43-1” and “C44-15” of
disconnected harness side TCM coupler.
Is it 10 – 14 V at “P” range and 0 V at the other
range?Go to Step 2. Go to Step 7.
2 While ignition switch ON, check voltage
between terminal “C43-2” and “C44-15” of dis-
connected harness side TCM coupler.
Is it 10 – 14 V at “R” range and 0 V at the other
range?Go to Step 3. Go to Step 7.
3 While ignition switch ON, check voltage
between terminal “C43-3” and “C44-15” of dis-
connected harness side TCM coupler.
Is it 10 – 14 V at “N” range and 0 V at the other
range?Go to Step 4. Go to Step 7.
4 While ignition switch ON, check voltage
between terminal “C43-9” and “C44-15” of dis-
connected harness side TCM coupler.
Is it 10 – 14 V at “D” range and 0 V at the other
range?Go to Step 5. Go to Step 7.

7B-44 AUTOMATIC TRANSMISSION (4 A/T)
5 While ignition switch ON, check voltage
between terminal “C43-10” and “C44-15” of dis-
connected harness side TCM coupler.
Is it 10 – 14 V at “2” range and 0 V at the other
range?Go to Step 6. Go to Step 7.
6 While ignition switch ON, check voltage
between terminal “C43-11” and “C44-15” of dis-
connected harness side TCM coupler.
Is it 10 – 14 V at “L” range and 0 V at the other
range?Intermittent trouble or
faulty TCM.
Check for intermittent
trouble referring to
“INTERMITTENT AND
POOR CONNECTION”
in Section 0B.Go to Step 7.
7 Check transmission range sensor referring in
this section.
Is it OK?Transmission range sen-
sor wire shorted.
If wire harnesses are OK,
substitute a known-good
TCM and recheck.Replace transmission
range sensor. Step Action Yes No

AUTOMATIC TRANSMISSION (4 A/T) 7B-45
DTC P0725 (DTC NO.35) ENGINE SPEED INPUT CIRCUIT MALFUNCTION
1. ECM 3. TCM coupler (viewed from harness side)
2. TCM 4. ECM coupler (viewed from harness side)
DTC DETECTING CONDITION
Inputted engine rev. signal too low or too high.
Step Action Yes No
1 Check DTC of “ENGINE DIAGNOSIS” referring
to Section 6.
Is there DTC related to engine speed sensor?Inspect and repair refer-
ring to DTC flow table of
“ENGINE DIAGNOSIS” in
Section 6.Go to Step 2.
2 1) Turn ignition switch OFF and disconnect
ECM or TCM couplers.
2) Measure resistance between terminal “G02-
16” and “C43-5” of disconnected harness
side coupler.
Is it about 0 Ω
?Go to Step 3.“BRN” wire open.
3 Measure resistance between terminal “C43-5”
of disconnected harness side coupler and body
ground.
Is it infinity?Go to Step 4.“BRN” wire shorted to
ground

7B-46 AUTOMATIC TRANSMISSION (4 A/T)
4 1) Turn ignition switch OFF and connect ECM
couplers.
2) Turn ignition switch ON and measure volt-
age between terminal “C43-5” of discon-
nected harness side TCM coupler and body
ground.
Is it 10 – 14 V?Intermittent trouble or
faulty ECM or TCM.
Check for intermittent
referring to “INTERMIT-
TENT AND POOR CON-
NECTION” in Section 0A.
If no trouble found, substi-
tute a known-good ECM
or TCM and recheck.“BRN” wire is shorted to
power circuit or faulty
ECM.
If “BRN” wire is OK, sub-
stitute a known-good
ECM and recheck. Step Action Yes No

AUTOMATIC TRANSMISSION (4 A/T) 7B-47
DTC P0710 (DTC No.36/38) TRANSMISSION TEMPERATURE SENSOR CIRCUIT MALFUNC-
TION
1. Transmission temperature sensor 3. TCM
2. Coupler 4. TCM coupler (viewed from harness side)
DTC DETECTING CONDITION
A/T fluid temperature signal input voltage too low.
A/T fluid temperature signal input voltage does not go down although standard value of engine rev. signal
input.
Step Action Yes No
1 1) Turn ignition switch OFF and disconnect
sensor wire harness coupler.
2) Measure resistance between “BLU/RED”
wire and “GRY/RED” wire terminal of sen-
sor side coupler.
Is it infinity or 0 Ω
?Faulty transmission tem-
perature sensor.
Replace transmission
temperature sensor.Go to Step 2.
2 Is DTC No.36? Go to Step 4. Go to Step 3.
3 Is DTC No.38? Go to Step 5. Go to Step 6.
(When DTC is P0710.)
4 1) Turn ignition switch OFF and connect sen-
sor wire harness coupler.
2) Disconnect TCM couplers.
3) Measure the resistance between terminal
“C44-3” and “C44-16” of disconnected har-
ness side coupler.
Is it about 0 Ω
?“BLU/RED” and “GRY/
RED” wire shorted each
other.Substitute a known-good
TCM and recheck.

7B-48 AUTOMATIC TRANSMISSION (4 A/T)
Figure for Step 75 1) Turn ignition switch OFF and connect sen-
sor wire harness coupler.
2) Disconnect TCM couplers.
3) Measure the resistance between terminal
“C44-3” and “C44-16” of disconnected har-
ness side coupler.
Is it infinity?“BLU/RED” or “GRY/
RED” wire open or poor
connection of solenoid
wire harness coupler.Go to Step 7.
6 1) Turn ignition switch OFF and connect sen-
sor wire harness coupler.
2) Disconnect TCM couplers.
3) Measure the resistance between terminal
“C44-3” and “C44-16” of disconnected har-
ness side coupler.
Is it about 0 Ω
or infinity?“BLU/REDl” or “GRY/
RED” wire open, shorted
each other or poor con-
nection of solenoid wire
harness coupler.Go to Step 7.
7 1) Turn ignition switch OFF and connect TCM
couplers.
2) Disconnect solenoid wire harness coupler.
3) Turn ignition switch ON then measure volt-
age between “BLU/RED” wire terminal of
disconnected harness side coupler and
engine ground. (See figure.)
Is it 4 – 6 V?Intermittent trouble or
faulty TCM.
Check for intermittent
referring to “INTERMIT-
TENT AND POOR CON-
NECTION” in Section 0A.
If no trouble found, substi-
tute a known-good TCM
and recheck.“BLU/RED” wire shorted
to power circuit or poor
connection of terminal
“C44-3”.
If wire and connection are
OK, substitute a known-
good TCM. Step Action Yes No
1. BLU/RED wire terminal