G13 SUZUKI SWIFT 2000 1.G SF310 Service Workshop Manual

IGNITION SYSTEM (SFI FOR G13) 6F1-5
ON-VEHICLE SERVICE
IGNITION SPARK TEST
1) Disconnect all injector couplers (1) from injectors (2).
WARNING:
Without disconnection of injector couplers, combustible
gas may come out from spark plug holes during this test
and may get ignited in engine room.
2) Remove spark plug and check it for condition and type referring
to “Spark Plugs” in this section.
3) If OK, connect ignition coil coupler to ignition coil assembly and
connect spark plug to ignition coil assembly or high-tension
cord. Ground spark plug.
4) Crank engine and check if each spark plug sparks.
5) If no spark is emitted, inspect the related parts as described un-
der “Diagnosis” earlier in this section.
HIGH-TENSION CORDS
1) Disconnect high-tension cords (1) from ignition coil assemblies
(2) while gripping each cap.
2) Pull out high-tension cords from spark plugs while gripping each
cap.
CAUTION:
Pull out each connection by gripping cap portion so as
not to damage their inside wire (resistive conductor).
3) Measure resistance of high-tension cord (1) by using ohmmeter.
High-tension cord resistance: 4 – 10 kΩ/ m (1.2 – 3.0 kΩ/ ft)
4) If resistance exceeds specification, replace high-tension
cord(s).

“a”
6F1-6 IGNITION SYSTEM (SFI FOR G13)
5) Install high-tension cords (1) to spark plugs and ignition coil as-
semblies (2) while gripping each cap.
CAUTION:

Never attempt to use metal conductor high-tension
cords as replacing parts.

Insert each cap portion fully when installing high-ten-
sion cords.
SPARK PLUGS
1) Pull out high-tension cords by gripping their caps and then re-
move ignition coil assemblies referring to IGNITION COIL AS-
SEMBLY in this section.
2) Remove spark plugs.
3) Inspect them for:

Electrode wear

Carbon deposits

Insulator damage
4) If any abnormality is found, adjust air gap, clean with spark plug
cleaner or replace them with specified new plugs.
Spark plug air gap “a”: 1.0 – 1.1 mm ( 0.040 – 0.043 in.)
Spark plug type : NGK BKR6E-11
: DENSO K20PR-U11
5) Install spark plugs and torque them to specification.
Tightening Torque for spark plug
28 N.m (2.8 kg-m, 20.0 lb-ft)
6) Install ignition coil assemblies referring to IGNITION COIL AS-
SEMBLY in this section.
7) Install high-tension cords securely by gripping their caps.
IGNITION COIL ASSEMBLY
(INCLUDING IGNITOR)
Inspection
1) Disconnect negative cable at battery.
2) Disconnect ignition coil coupler.
3) Disconnect high-tension cord (3) from ignition coil assembly (2).
4) Remove ignition coil bolts (1) and then pull out ignition coil as-
sembly.

IGNITION SYSTEM (SFI FOR G13) 6F1-7
5) Measure secondary coil for resistance.
Secondary coil resistance : 7.6 – 10.2 kΩ at 20C, 68F
If resistance is out of specification, replace ignition coil assem-
bly.
6) Install ignition coil assembly.
7) Tighten ignition coil bolts, and then connect ignition coil coupler.
8) Install high-tension cord to ignition coil assembly while gripping
its cap.
CRANKSHAFT POSITION SENSOR
(CKP SENSOR)
Refer to section 6E2 for removal, inspection and installation.
IGNITION TIMING
NOTE:

Ignition timing is not adjustable. If ignition timing is out of
specification, check system related parts.

Before starting engine, place transmission gear shift lever in
“Neutral” (shift selector lever to “P” range for A / T model),
and set parking brake.
INSPECTION
1) Connect SUZUKI scan tool to DLC with ignition switch OFF.
Special Tool
(A): 09931-76011 (SUZUKI scan tool)
(B): Mass storage cartridge
(C): 09931-76030 (16 / 14 pin DLC cable)
2) Start engine and warm it up to normal operating temperature.
3) Make sure that all of electrical loads except ignition are switched
off.
4) Check to be sure that idle speed is within specification.
(Refer to SECTION 6E2)

6F1-8 IGNITION SYSTEM (SFI FOR G13)
5) Fix ignition timing to initial one as follow.
Select “MISC” mode on SUZUKI scan tool and fix ignition tim-
ing to initial one.
6) Detach air cleaner case and shift air cleaner case and hose
position to observe ignition timing.
7) Using timing light (1), check that ignition timing is within specifi-
cation.
Initial ignition timing (fixed with
SUZUKI scan tool) : 5
3 BTDC at idle speed
Ignition order : 1-3-4-2
8) If ignition timing is out of specification, check the followings:

CKP sensor

Crankshaft timing belt pulley (signal rotor)

TP sensor

VSS

Timing belt cover installation
9) After checking Initial Ignition Timing, release ignition timing
fixation by using SUZUKI scan tool.
10) With engine idling (throttle opening at closed position and ve-
hicle stopped), check that ignition timing is about 9–15
BTDC. (Constant variation within a few degrees from 9–15
indicates no abnormality but proves operation of electronic tim-
ing control system.) Also, check that increasing engine speed
advances ignition timing.
If above check results are not satisfactory, check CKP sensor
and ECM (PCM).
11) Install air cleaner case.

09931-76011
SUZUKI scan tool (Tech 1A) kit1. Storage case
2. Operator’s manual
3. Tech 1A
4. DLC cable (14 / 26 pin,
09931-76040)
5. Test lead / probe
6. Power source cable
7. DLC cable adaptor
8. Self-test adaptor
Mass storage cartridge09931-76030
16 / 14 pin DLC cable
IGNITION SYSTEM (SFI FOR G13) 6F1-9
SPECIAL TOOLS

7B-4 AUTOMATIC TRANSMISSION (3 A / T) (VEHICLE WITH WU-TWC)
COMPONENTS OPERATION CHART
RangeGearForward
ClutchDirect
ClutchSecond
Brake1st & Reverse
BrakeOne-way
ClutchParking Lock
Pawl
PParking–––****–
RReverse––––
NNeutral––––––
1st––––
D2nd––––
3rd––––
21st––––22nd––––
L1st–––L*2nd––––
: Operated
*: To prevent over-revolution of engine, this 2nd gear is operated only when selector lever is shifted to L range
at a higher than 37 km / h (23 mile / h) (G10 engine model), 40 km / h (25 mile / h) (G13 engine model) speed.
**: When engine is running.

7B-6 AUTOMATIC TRANSMISSION (3 A / T) (VEHICLE WITH WU-TWC)
[G13 Engine Model]
1. PCM
2. Camshaft position (CMP) sensor
3. Throttle position (TP) sensor
4. Engine coolant temperature (ECT) sensor
5. Transmission range sensor (shift switch)
6. Output shaft speed sensor (A / T VSS)7. Malfunction indicator lamp (MIL)
8. Data link connector (DLC)
9. Shift solenoid-A
(No.1, Direct clutch solenoid valve)
10. Shift solenoid-B
(No.2, 2nd brake solenoid valve)11. Ignition switch
12. Main relay
13. Inhibitor switch
14. To starter
15. Terminal arrangement of PCM coupler
(Viewed from harness side)

1. PCM
2. Instrument panel
TP sensor
Transmission range sensor
Output shaft speed sensor
(A / T VSS)
Shift solenoid-B
(2nd brake solenoid valve)
Shift solenoid-A
(Direct clutch solenoid valve)PCM
1. Throttle position sensor
2. Throttle body
A: Ground
3. Ground terminal
4. Reference voltage
terminal
5. Output voltage terminal
6. TP sensor
C: Output voltage
(opening angle signal)
D: Power supply from ECM
(reference voltage)
[G10 engine model]
[G13 engine model]
AUTOMATIC TRANSMISSION (3 A / T) (VEHICLE WITH WU-TWC) 7B-7
POWERTRAIN CONTROL MODULE (PCM)
The powertrain control module controls the shift solenoid B (2nd
brake solenoid valve) and the shift solenoid A (direct clutch sole-
noid valve) by sending electric signals to them so as to attain auto-
matic gear shift between the 1st and 2nd gears, and the 2nd and
3rd gears. Equipped as PCM sensed parameters are the throttle
position sensor, transmission range switch and vehicle speed sen-
sor. These switch and sensors sense the throttle valve opening, se-
lector lever’s position and vehicle speed, and send those signals to
the powertrain control module. Then, the powertrain control module
opens and closes valves of the above solenoids according to these
signals. The powertrain control module is installed to the underside
of the instrument panel at the driver’s seat side.
GEAR SHIFT CONTROL SYSTEM
THROTTLE POSITION SENSOR (TP sensor)
The throttle position sensor consisting of a potentiometer is con-
nected to the throttle valve shaft.
Throttle valve opening signal (output voltage) is transmitted from
throttle position sensor to PCM as voltage signal. PCM uses it as
one of the signals to control transmission gear shift.

1. Countershaft gear
2. Output shaft speed sensor
A: Magnetic core end
D or 2
1→2
18
11
52
33D
2→3
33
21
97
613→2
14
9
82
51D or 2
2→1
14
9
37
23L
2→1
37
23
37
23 Full close
Full openkm / h
mile/h
km / h
mile/h Throttle SpeedGear Selector
VEHICLE SPEED
UpshiftDownshift
THROTTLE VALVE OPENING
[G10 Engine Model]
AUTOMATIC TRANSMISSION (3 A / T) (VEHICLE WITH WU-TWC) 7B-9
OUTPUT SHAFT SPEED SENSOR (A / T VSS)
The output shaft speed sensor consists of a magnetic core with
magnet and coil. It is mounted on transmission case with 0.6 mm
(0.024 in.) air gap between the core end and countershaft gear
tooth.
While the countershaft rotates, magnetic flux is cut by gear tooth
thus a pulse is generated in the sensor coil according to the speed.
And then, the pulse is transmitted to engine control module as
speed signal.
AUTOMATIC SHIFT DIAGRAM
Automatic shift schedule as a result of shift control is shown below. In case that selector lever is shifted to L range
at a higher than 37 km / h (23 mile / h) (G10 engine model), 40 km / h (25 mile / h) (G13 engine model) speed, 2nd
gear is operated and then down shifts to 1st at a speed lower than that. No up shift is available in L range.

7B-10 AUTOMATIC TRANSMISSION (3 A / T) (VEHICLE WITH WU-TWC)
D or 2
1→2
18
11
58
36D
2→3
30
19
11 0
693→2
14
9
97
61D or 2
2→1
14
9
40
25L
2→1
40
25
40
25 Full close
Full openkm / h
mile/h
km / h
mile/h Throttle SpeedGear Selector
VEHICLE SPEED
Upshift
Downshift
THROTTLE VALVE OPENING
[G13 Engine Model]