2000 SUZUKI SWIFT ignition timing

ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-53
4) Reverse removal procedure for installation.
5) Adjust water pump drive belt tension by referring to “ENGINE
COOLING” section.
6) Adjust power steering pump belt tension or A / C compressor
belt tension, if equipped.
Refer to Section 0B.
7) Adjust intake and exhaust valve lashes as previously outlined.
8) Adjust accelerator cable play.
Refer to Section 6E.
9) Check to ensure that all removed parts are back in place.
Reinstall any necessary parts which have not been reinstalled.
10) Refill cooling system referring to Section 6B.
11) Connect negative cable at battery.
12) Confirm that ignition timing is within specification.
13) Verify that there is no fuel leakage, coolant leakage and ex-
haust gas leakage at each connection.

ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-63
6) Reverse removal procedure for installation, as previously out-
lined.
7) Adjust water pump drive belt tension referring to Section 6B.
8) Adjust power steering pump belt tension or A / C compressor
belt tension, if equipped.
Refer to Section 0B.
9) Adjust accelerator cable play.
Refer to Section 6E.
10) Check to ensure that all removed parts are back in place. Rein-
stall any necessary parts which have not been reinstalled.
11) Refill engine with engine oil by referring to item “ENGINE OIL
CHANGE” in Section 0B.
12) Refill cooling system referring to Section 6B.
13) Connect negative cable at battery.
14) Check ignition timing referring to Section 6F.
15) Verify that there is no fuel leakage, coolant leakage, oil leakage
and exhaust gas leakage at each connection.

6B-4 ENGINE COOLING
COOLANT (WATER) TEMP. GAUGE
The coolant temp. gauge is included in engine coolant temp. (ECT)
sensor (1). This gauge activates a temp. meter in the instrument
cluster.
DIAGNOSIS
ConditionPossible CauseCorrection
Engine overheatsLoose or broken water pump belt
Not enough coolant
Faulty thermostat
Faulty water pump
Dirty or bent radiator fins
Coolant leakage on cooling system
Defective cooling fan motor
Plugged radiator
Faulty radiator cap
Maladjusted ignition timing
Dragging brakes
Slipping clutchAdjust or replace.
Check coolant level and add as
necessary.
Replace.
Replace.
Clean or remedy.
Repair.
Check and replace as
necessary.
Check and replace radiator as
necessary.
Replace.
Adjust.
Adjust brake.
Adjust or replace.

6E1-8 ENGINE AND EMISSION CONTROL SYSTEM (TBI FOR G10)
ON-VEHICLE SERVICE
GENERAL
When the hoses have been disconnected and system’s component
removed for service, be sure to reinstall component properly, and
route and connect hoses correctly after service. Refer to Emission
Control Information Label for proper connection of hoses (if
equipped).
ACCELERATOR CABLE ADJUSTMENT
1) Confirm that ambient temperature is higher than 0C, 32F.
2) Warm up engine to normal operating temperature with all elec-
tric loads OFF and stop engine.
3) Confirm that clearance “c” between throttle lever (1) and stop
screw (2) is less than about 1 mm (0.04 in.).
4) Check accelerator cable for play.
Accelerator cable play “a”: 10 – 15 mm (0.4 – 0.6 in.)
Cable play should be within specification. If out of specification,
loosen accelerator cable lock nut and adjust by turning adjusting
nut (3). Be sure to tighten lock nut (4) securely after adjustment.
5) With accelerator pedal depressed fully, check clearance be-
tween throttle lever and lever stopper (5) (throttle body) which
should be within following specification.
Clearance “b”: 0.5 – 2.0 mm (0.02 – 0.07 in.)
(With pedal depressed fully)
If measured value is out of specification, adjust it to specification
by changing height of pedal stopper bolt (6).
IDLE SPEED INSPECTION
Before inspecting idle speed, make sure to the following.

Lead wires and hoses of Electronic Fuel Injection and engine
emission control systems are connected securely.

After warming up engine, accelerator cable has some play, that
is, it is not tight.

Ignition timing is within specification.

All of electrical loads except ignition are switched off.

Air cleaner has been properly installed and is in good condition.

Malfunction indicator lamp does not light when engine running.
After above items are all confirmed, check idle speed as follows.

6E2-14 ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13)
IDLE SPEED / IDLE AIR CONTROL (IAC) DUTY
INSPECTION
Before idle speed / IAC duty check, make sure of the following.

Lead wires and hoses of Electronic Fuel Injection and engine
emission control systems are connected securely.

Accelerator cable has some play, that is, it is not tight.

Valve lash is checked and adjusted according to maintenance
schedule.

Ignition timing is within specification.

All accessories (wipers, heater, lights, A / C, etc.) are out of ser-
vice.

Air cleaner has been properly installed and is in good condition.

No abnormal air inhaling from air intake system.
After above items are all confirmed, check idle speed and IAC duty
as follows.
NOTE:
Before starting engine, place transmission gear shift lever in
“Neutral” (shift selector lever to “P” range for A / T vehicle),
and set parking brake and block drive wheels.
1) Connect SUZUKI scan tool (1) to DLC with ignition switch OFF,
if it is available.
2) Warm up engine to normal operating temperature.
3) Check engine idle speed and “IAC duty” as follow:
Select “Data List” mode on scan tool to check “IAC duty” and en-
gine speed.
Special Tool
(A): 09931-76011 (SUZUKI scan tool)
(B): Mass storage cartridge
(C): 09931-76030 (16 / 14 pin DLC cable)
If duty and/or idle speed is out of specifications, inspect idle air
control system referring to Diagnostic Flow Table B-4 IDLE AIR
CONTROL SYSTEM CHECK in Section 6.
ENGINE IDLE SPEED AND IAC DUTY
A/C OFFA/C ON
M / T vehicle750±50 r / min (rpm)875±50 r/minA / T vehicle
at P/N range750 ±50 r/min (rpm)
8 – 25 or *8 – 35%
875 ±50 r/min
(rpm)
NOTE:
Duty values with (*) are applicable to vehicle used at high
altitude (higher than 2,000 m or 6,560 ft).
4) Check that 875 ± 50 r / min. idle speed is obtained with lighting
switch ON and heater blower switch in 2 – 4 position.
If not, check “Electric load (+)” circuit and “Heater blower switch
signal” circuit referring to “ELECTRONIC CONTROL SYSTEM”
in this section and idle air control system.
5) Check that specified engine idle speed is obtained with A / C ON
if vehicle is equipped with A / C.
If not, check A / C ON signal circuit.

6F
IGNITION SYSTEM 6F-1
GENERAL DESCRIPTION6F- 1 . . . . . . . . . . . . . .
DIAGNOSIS6F- 3 . . . . . . . . . . . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE6F- 5 . . . . . . . . . . . . . . . .
Ignition Spark Test 6F- 5. . . . . . . . . . . . . . . . . . . .
High-Tension Cords 6F- 5. . . . . . . . . . . . . . . . . . .
Spark Plugs 6F- 6. . . . . . . . . . . . . . . . . . . . . . . . .
Noise Suppressor 6F- 6. . . . . . . . . . . . . . . . . . . . Ignition Coil 6F- 7. . . . . . . . . . . . . . . . . . . . . . . . . .
Igniter 6F- 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Distributor 6F- 8. . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Timing 6F- 9. . . . . . . . . . . . . . . . . . . . . . .
Distributor Unit 6F-10. . . . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOLS6F-11 . . . . . . . . . . . . . . . . . . . . . .
The ignition system used for this vehicle has an elec-
tronic ignition control system and consists of the fol-
lowing parts.

ECM
It detects the engine condition through the signals
from the sensors, determines the most suitable igni-
tion timing and time for electricity to flow to the pri-
mary coil and sends a signal to the power unit.

Power unit (Igniter)
It turns ON and OFF the primary current of the igni-
tion coil according to the signal from ECM.

Ignition coil
When the ignition coil primary current is turned OFF,
a high voltage is induced in the secondary winding.

Distributor
It distributes a high voltage current to each plug.
High-tension cords and spark plugs.

CMP sensor (Camshaft position Sensor)
Located in the distributor, it converts the crank angle
into voltage variation and sends it to ECM. For its
details, refer to Section 6E1.

TP sensor, ECT sensor and MAP sensor
For their details, refer to Section 6E.
In electronic ignition control system, the ECM is pro-
grammed for the best ignition timing under every en-
gine condition. Receiving signals which indicate the
engine condition from the sensors, e.g., engine revo-
lution, intake air pressure, coolant temperature, etc.,
it selects the most suitable ignition timing from its
memory and operates the power unit.
Thus ignition timing is controlled to yield the best en-
gine performance.
For more information, refer to Section 6E1.
SECTION 6F
IGNITION SYSTEM
WARNING:
For vehicles equipped with a Supplemental Inflatable Restraint Air Bag System:

Service on or around Air Bag System Components or Wiring must be performed only by an authorized
Suzuki dealer. Please observe all WARNINGS and SERVICE PRECAUTIONS in Section 9J under “On-
Vehicle Service” and the Air Bag System Component and Wiring Location view in Section 9J before
performing service on or around Air Bag System Components or Wiring. Failure to follow WARNINGS
could result in unintended air bag deployment or could render the air bag inoperative. Either of these
two conditions may result in severe injury.

SDM can maintain sufficient voltage to cause a deployment of air bags for up to 10 seconds after igni-
tion switch is turned to “LOCK” position, battery is disconnected or fuse powering SDM is removed.
Work must be started after 15 seconds from the time.
CONTENTS
GENERAL DESCRIPTION

IGNITION SYSTEM 6F-3
DIAGNOSIS
ConditionPossible CauseCorrection
Engine cranks, but will
not start or hard to start
Blown fuse for ignition coil

Loose connection or disconnection of lead wire or
high-tension cord(s)

Faulty high-tension cord(s)

Faulty spark plug(s)

Cracked rotor or cap

Maladjusted signal rotor air gap

Faulty ignition coil

Faulty noise suppressor

Faulty CMP sensor

Faulty igniter

Faulty ECM (or PCM)

Maladjusted ignition timingReplace
Connect securely
Replace
Adjust, clean or replace
Replace
Adjust
Replace
Replace
Replace
Replace
Replace
Adjust
Poor fuel economy or
engine performance
Incorrect ignition timing

Faulty spark plug(s) or high-tension cord(s)

Faulty ECM (or PCM)Adjust
Adjust, clean or replace
Replace
DIAGNOSTIC FLOW TABLE
STEPACTIONYESNO
1Was “Engine Diagnostic Flow Table” in SECTION 6
performed?Go to Step 2.Go to “Engine
Diagnostic Flow
Table” in SECTION 6.
2Ignition Spark Test
1) Check all spark plug for condition and type,
referring to “Spark Plugs” in this section.
2) If OK, perform ignition spark test, referring to
“Ignition Spark Check” in this section.
Is spark emitted from all spark plugs?Go to Step 11 on the
next page.Go to Step 3.
3Diagnostic Trouble Code (DTC) Check
1) Check DTC stored in ECM (or PCM), referring to
“Diagnostic Trouble Code (DTC) Check” in
SECTION 6.
Is DTC stored?Go to applicable flow
table corresponding to
that code No. in
SECTION 6.Go to Step 4.
4Electrical Connection and Noise Suppressor Check
1) Check ignition coil for electrical connection and
noise suppressor for conductivity.
Are they good condition?Go to Step 5.Repair or replace.
5High-tension Cord Check
1) Check high-tension cord for resistance, referring
to “High-tension Cords” in this section.
Is check result satisfactory?Go to Step 6.Replace high-tension
cord(s).

6F-4 IGNITION SYSTEM
STEPACTIONYESNO
6Ignition Coil Power Supply and Ground Circuit
Check
1) Check ignition coil power supply (“B/W” wire)
circuit for open and short.
Are circuits in good condition?Go to Step 7.Repair or replace.
7Ignition Coil Check
1) Check ignition coil for resistance, referring to
“Ignition Coil” in this section.
Is check result satisfactory?Go to Step 8.Replace ignition coil
assembly.
8CMP Sensor Check
1) Check CMP sensor and signal rotor, referring to
“Distributor Unit” in this section.
Is check result satisfactory?Go to Step 9 on the
next page.Adjust or replace.
9Ignition Trigger Signal Circuit Check
1) Check ignition trigger signal (“Br / Y” or “Or” wire)
circuit for open, short and poor connection.
Are circuits in good condition?Go to Step 10.Repair or replace.
10Igniter Check
1) Check igniter, referring to “Igniter” in this section.
Is check result satisfactory?Go to Step 11.Replace igniter.
11Ignition Timing Check
1) Check initial ignition timing and ignition timing
advance, referring to “Ignition Timing” in this
section.
Is check result satisfactory?Substitute a known-
good ECM (or PCM)
and then repeat
Step 2.Go to Step 12.
12Ignition Timing Adjustment and Recheck
1) Adjust initial ignition timing, referring to “Ignition
Timing” in this section.
2) Recheck initial ignition timing and ignition timing
advance, referring to “Ignition Timing” in this
section.
Is check result satisfactory?System is in good
condition.Substitute a known-
good ECM (or PCM)
and then repeat
Step 2.