2000 SUZUKI SWIFT CHECK

ENGINE GENERAL INFORMATION AND DIAGNOSIS (TBI FOR G10) 6-11
1. CUSTOMER COMPLAINT ANALYSIS
Record details of the problem (failure, complaint) and how it occurred as described by the customer. For this
purpose, use of such an inspection form will facilitate collecting information to the point required for proper
analysis and diagnosis.
2. DIAGNOSTIC TROUBLE CODE (DTC) / FREEZE FRAME DATA CHECK, RECORD AND
CLEARANCE
First, check DTC (including pending DTC), referring to “DTC check” section. If DTC is indicated, print it and
freeze frame data or write them down and then clear them by referring to “DTC clearance” section. DTC indi-
cates malfunction that occurred in the system but does not indicate whether it exists now or it occurred in the
past and the normal condition has been restored now. To check which case applies, check the symptom in
question according to Step 4 and recheck DTC according to Step 5.
Attempt to diagnose a trouble based on DTC in this step only or failure to clear the DTC in this step will lead
to incorrect diagnosis, trouble diagnosis of a normal circuit or difficulty in troubleshooting.
NOTE:
If only Automatic transmission DTCs (P0705 / P0720 / P0753 / P0758 / P0751 / P0756) or Immobilizer
DTCs (P1620 – P1623) are indicated in this step, perform trouble diagnosis according to “Diagnosis”
in Section 7B or Section 8G.
3. and 4. VISUAL INSPECTION
As a preliminary step, be sure to perform visual check of the items that support proper function of the engine
referring to “Visual Inspection” section.
5. TROUBLE SYMPTOM CONFIRMATION
Based on information obtained in Step 1 Customer complaint analysis and Step 2 DTC / freeze frame data
check, confirm trouble symptoms. Also, reconfirm DTC according to “DTC Confirmation Procedure” described
in each DTC Diagnosis section.
6. and 7. RECHECKING AND RECORD OF DTC / FREEZE FRAME DATA
Refer to “DTC check” section for checking procedure.
8. ENGINE BASIC INSPECTION AND ENGINE DIAGNOSIS TABLE
Perform basic engine check according to the “Engine Basic Inspection Flow Table” first. When the end of the
flow table has been reached, check the parts of the system suspected as a possible cause referring to ENGINE
DIAGNOSIS FLOW TABLE and based on symptoms appearing on the vehicle (symptoms obtained through
steps of customer complaint analysis, trouble symptom confirmation and / or basic engine check) and repair
or replace faulty parts, if any.
9. TROUBLESHOOTING FOR DTC (See each DTC Diag. Flow Table)
Based on the DTC indicated in Step 5 and referring to the applicable DTC diag. flow table in this section, locate
the cause of the trouble, namely in a sensor, switch, wire harness, connector, actuator, ECM (PCM) or other
part and repair or replace faulty parts.
10. CHECK FOR INTERMITTENT PROBLEM
Check parts where an intermittent trouble is easy to occur (e.g., wire harness, connector, etc.), referring to
“INTERMITTENT AND POOR CONNECTION” in Section 0A and related circuit of DTC recorded in Step 2.
11. FINAL CONFIRMATION TEST
Confirm that the problem symptom has gone and the engine is free from any abnormal conditions. If what has
been repaired is related to the DTC, clear the DTC once, perform DTC confirmation procedure and confirm
that no DTC is indicated.

6-12 ENGINE GENERAL INFORMATION AND DIAGNOSIS (TBI FOR G10)
CUSTOMER PROBLEM INSPECTION FORM (EXAMPLE)
User name:Model:VIN:
Date of issue:Date Reg.Date of problem:Mileage:
PROBLEM SYMPTOMS
Difficult Starting
No cranking
No initial combustion
No combustion
Poor starting at
(cold warm always)
OtherPoor Driveability
Hesitation on acceleration
Back fire /After fire
Lack of power
Surging
abnormal knocking
Other
Poor Idling
Poor fast idle
Abnormal idling speed
(High Low) ( r / min.)
Unstable
Hunting ( r / min. to r / min.)
OtherEngine Stall when
Immediately after start
Accel. pedal is depressed
Accel. pedal is released
Load is applied
A/C Electric load P/S
Other
Other
OTHERS:
VEHICLE / ENVIRONMENTAL CONDITION WHEN PROBLEM OCCURS
Environmental Condition
Weather
Temperature
Frequency
RoadFair Cloudy Rain Snow Always Other
Hot Warm Cool Cold (F/C) Always
Always Sometimes ( times/ day, month) Only once Under certain condition
Urban Suburb Highway Mountainous (Uphill Downhill) Tarmacadam Gravel
Other
Vehicle Condition
Engine
conditionCold Warming up phase Warmed up Always Other at starting
Immediately after start Racing without load Engine speed ( r / min.)
Vehicle
conditionDuring driving: Constant speed Accelerating Decelerating
Right hand corner Left hand corner When shifting (Lever position ) At stop
Vehicle speed when problem occurs ( km/h, Mile / h) Other
Malfunction indicator
lamp conditionAlways ON Sometimes ON Always OFF Good condition
Diagnostic troubleFirst check:No code Malfunction code ( )g
codeSecond check:No code Malfunction code ( )
NOTE:
The above form is a standard sample. It should be modified according to conditions characteristic of each
market.

ENGINE GENERAL INFORMATION AND DIAGNOSIS (TBI FOR G10) 6-13
MALFUNCTION INDICATOR LAMP (MIL)
CHECK
1) Turn ON ignition switch (but the engine at stop) and check that
MIL lights.
If MIL does not light up (or MIL dims), go to “Diagnostic Flow
Table A-1” for troubleshooting.
2) Start engine and check that MIL turns OFF.
If MIL remains ON and no DTC is stored in ECM (PCM), go to
“Diagnostic Flow Table A-2” for troubleshooting.
DIAGNOSTIC TROUBLE CODE (DTC) CHECK
1) Prepare SUZUKI scan tool (Tech-1) or generic scan tool.
2) With ignition switch OFF, connect it to data link connector (DLC)
(1) located on underside of instrument panel at driver’s seat side.
Special Tool:
(A): SUZUKI scan tool
(B): Mass storage cartridge
(C): 16 / 14 pin DLC cable
3) Turn ignition switch ON and confirm that MIL lights.
4) Read DTC, pending DTC and freeze frame data according to
instructions displayed on scan tool and print it or write it down.
Refer to scan tool operator’s manual for further details.
If communication between scan tool and ECM (PCM) is not pos-
sible, check if scan tool is communicable by connecting it to
ECM (PCM) in another vehicle. If communication is possible in
this case, scan tool is in good condition. Then check data link
connector and serial data line (circuit) in the vehicle with which
communication was not possible.
5) After completing the check, turn ignition switch off and discon-
nect scan tool from data link connector.

6-14 ENGINE GENERAL INFORMATION AND DIAGNOSIS (TBI FOR G10)
DIAGNOSTIC TROUBLE CODE (DTC)
CLEARANCE
1) Connect SUZUKI scan tool (Tech-1) or generic scan tool to data
link connector in the same manner as when making this connec-
tion for DTC check.
2) Turn ignition switch ON.
3) Erase DTC and pending DTC according to instructions dis-
played on scan tool. Refer to scan tool operator’s manual for fur-
ther details.
4) After completing the clearance, turn ignition switch off and dis-
connect scan tool from data link connector.
NOTE:
DTC and freeze frame data stored in ECM (PCM) memory
are also cleared in following cases. Be careful not to clear
them before keeping their record.

When power to ECM (PCM) is cut off (by disconnecting
battery cable, removing fuse or disconnecting ECM
(PCM) connectors for 30 sec. or longer)

When the same malfunction (DTC) is not detected again
during 40 engine warm-up cycles.

ENGINE GENERAL INFORMATION AND DIAGNOSIS (TBI FOR G10) 6-19
Operation
VISUAL INSPECTION
Visually check following parts and systems.
INSPECTION ITEM
REFERRING SECTION

Engine oil ––––– level, leakage

Engine coolant ––––– level, leakage

Fuel ––––– level, leakage

A / T fluid ––––– level, leakage

Air cleaner element ––––– dirt, clogging

Battery ––––– fluid level, corrosion of terminal

Water pump belt ––––– tension, damage

Throttle cable ––––– play, installation

Vacuum hoses of air intake system ––––– disconnection,
looseness, deterioration, bend

Connectors of electric wire harness ––––– disconnection, friction

Fuses ––––– burning

Parts ––––– installation, bolt ––––– looseness

Parts ––––– deformation

Other parts that can be checked visually
Also check following items at engine start, if possible

Malfunction indicator lamp

Charge warning lamp

Engine oil pressure warning lamp

Engine coolant temp. meter

Fuel level meter

Tachometer, if equipped

Abnormal air being inhaled from air intake system

Exhaust system ––––– leakage of exhaust gas, noise

Other parts that can be checked visuallySection 0B
Section 0B
Section 0B
Section 0B
Section 0B
Section 0B
Section 6E1
Section 8
Section 6
Section 6H
Section 8 (section 6 for pressure check)
Section 8
Section 8

6-20 ENGINE GENERAL INFORMATION AND DIAGNOSIS (TBI FOR G10)
ENGINE BASIC INSPECTION
This check is very important for troubleshooting when ECM (PCM) has detected no DTC and no abnormality has
been found in visual inspection.
Follow the flow table carefully.
STEP
ACTIONYESNO
1Was “ENGINE DIAG. FLOW TABLE” performed?Go to Step 2.Go to “ENGINE DIAG.
FLOW TABLE”.
2Check battery voltage.
Is it 11 V or more?Go to Step 3.Charge or replace
battery.
3Is engine cranked?Go to Step 4.Go to “DIAGNOSIS”
in Section 6G.
4Does engine start?Go to Step 5.Go to Step 7.
5Check idle speed as follows.
1) Warm up engine to normal operating temp.
2) Shift transmission to neutral position for M / T
(“P” position for A / T).
3) All of electrical loads are switched off.
4) Check engine idle speed with scan tool.
See Fig. 1.
Is it 800 – 900 r / min.?Go to Step 6.Go to “ENGINE
DIAGNOSIS TABLE”.
6Check ignition timing as follows.
1) Select “MISC” mode on SUZUKI scan tool and
fix ignition timing to initial one. See Fig. 2.
2) Using timing light (1), check initial ignition timing.
See Fig. 3.
Is it 5 ± 3 BTDC at specified idle speed?Go to “ENGINE
DIAGNOSIS TABLE”.Check ignition control
related parts referring
to Section 6F.
7Check immobilizer system malfunction as follows.
1) Check immobilizer indicator lamp for flashing.
Is it flashing when ignition switch is turned to ON
position?Go to “DIAGNOSIS” in
Section 8A.Go to Step 8.
8Check fuel supply as follows.
1) Check to make sure that enough fuel is filled in fuel
tank.
2) Turn ON ignition switch for 2 seconds and then
OFF. See Fig. 4.
Is fuel return pressure (returning sounds) felt from fuel
feed hose (1) when ignition switch is turned ON?Go to Step 10.Go to Step 9.
9Check fuel pump for operating.
1) Was fuel pump operating sound heard from fuel
filler for about 2 seconds after ignition switch ON
and stop?Go to “DIAG. FLOW
TABLE B-3”.Go to “DIAG. FLOW
TABLE B-2”.
10Check ignition spark as follows.
1) Disconnect injector coupler.
2) Remove spark plugs and connect them to high
tension cords.
3) Ground spark plugs.
4) Crank engine and check if each spark plug sparks.
Is it in good condition?Go to Step 11.Go to “DIAGNOSIS”
in Section 6F.
11Check fuel injector for operation as follows.
1) Install spark plugs and connect injector
connectors.
2) Check that fuel is injected out in conical shape
from fuel injector when cranking.
Is it in good condition?Go to “ENGINE
DIAGNOSIS TABLE”.Go to “DIAG. FLOW
TABLE B-1”.

6-22 ENGINE GENERAL INFORMATION AND DIAGNOSIS (TBI FOR G10)
ENGINE DIAGNOSIS TABLE
Perform troubleshooting referring to following table when ECM (PCM) has detected no DTC and no abnormality
has been found in visual inspection and engine basic inspection previously.
Condition
Possible CauseReferring Item
Hard Starting
(Engine cranks OK)Ignition system out of order

Faulty spark plug

Leaky high-tension cord

Loose connection or disconnection of high-
tension cords or lead wires

Faulty ignition coil
Fuel system out of order

Dirty or clogged fuel hose or pipe

Malfunctioning fuel pump

Air inhaling from intake manifold gasket or
throttle body gasket

Fuel injector resistor malfunction
Engine and emission control system out of
order

Faulty idle control system

Faulty ECT sensor or MAP sensor

Faulty ECM (PCM)
Low compression

Poor spark plug tightening or faulty gasket

Compression leak from valve seat

Sticky valve stem

Weak or damaged valve springs

Compression leak at cylinder head gasket

Sticking or damaged piston ring

Worn piston, ring or cylinder
Others

Malfunctioning PCV valve
Spark plugs in Section 6F
High-tension cords in Section 6F
High-tension cords in Section 6F
Ignition coil in Section 6F
Diagnostic Flow Table B-3
Diagnostic Flow Table B-3
Fuel injector resistor in Section 6E1
Diagnostic Flow Table P0505
ECT sensor or MAP sensor in
Section 6E1
Compression check in Section
6A
Spark plugs in Section 6F
Valves inspection in Section 6A
Valves inspection in Section 6A
Valve springs inspection in
Section 6A
Cylinder head inspection in
Section 6A
Cylinders, pistons and piston rings
inspection in Section 6A
Cylinders, pistons and piston rings
inspection in Section 6A
PCV system in Section 6E1

ENGINE GENERAL INFORMATION AND DIAGNOSIS (TBI FOR G10) 6-23
ConditionPossible CauseReferring Item
Low oil pressure
Improper oil viscosity

Malfunctioning oil pressure switch

Clogged oil strainer

Functional deterioration of oil pump

Worn oil pump relief valve

Excessive clearance in various sliding partsEngine oil and oil filter change in
Section 0B
Oil pressure switch inspection in
Section 8
Oil pan and oil pump strainer
cleaning in Section 6A
Oil pump in Section 6A
Oil pump in Section 6A
Engine noise
Note: Before
checking mechanical
noise, make sure
that:

Specified spark
plug in used.

Specified fuel is
used.Valve noise

Improper valve lash

Worn valve stem and guide

Weak or broken valve spring

Warped or bent valve
Piston, ring and cylinder noise

Worn piston, ring and cylinder bore
Connecting rod noise

Worn rod bearing

Worn crank pin

Loose connecting rod nuts

Low oil pressure
Crankshaft noise

Low oil pressure

Worn bearing

Worn crankshaft journal

Loose bearing cap bolts

Excessive crankshaft thrust play
Valve lash in Section 6A
Valves inspection in Section 6A
Valve springs inspection in
Section 6A
Valves inspection in Section 6A
Pistons and cylinders inspection
in Section 6A
Crank pin and connecting rod
bearing inspection in Section 6A
Crank pin and connecting rod
bearing inspection in Section 6A
Connecting rod installation in
Section 6A
Previously outlined
Previously outlined
Crankshaft and bearing
inspection in Section 6A
Crankshaft and bearing
inspection in Section 6A
Crankshaft inspection in
Section 6A
Crankshaft thrust play inspection
in Section 6A