Suzuki GA413, Service Manual

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6-8 ENGINE
5. TROUBLE SYMPTOM CONFIRMATION
Based on information obtained in Step 1 customer complaint analysis and Step 2 DTC check, confirm trouble
symptoms. Also, reconfirm DTC according to “DTC Confirmation Procedure” in Section 6E.
6. and 7. RECHECKING AND RECORD OF DTC
Refer to “DTC Check” in Section 6E 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. Refer to ENGINE
DIAGNOSIS 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.
ENGINE BASIC INSPECTION FLOW TABLE
STEP ACTION YES NO
1 Was “ENGINE DIAGNOSTIC FLOW TABLE” performed? Go to Step 2. Go to “ENGINE
DIAGNOSTIC
FLOW TABLE”.
2 Check battery voltage.
Is it 11 V or more? Go to Step 3. Go to “DIAGNOSIS”
in Section 6H.
3 Is engine cranked? Go to Step 4. Go to “DIAGNOSIS”
in Section 6G.
4 Does engine start? Go to Step 5. Go to Step 7.
5 Check engine idle speed / IAC duty. Refer to “Idle
Speed / IAC Duty Inspection” in Section 6E.
Is check result as specified? Go to Step 6. Go to “DIAG. Flow
Table B-4” in Section
6E.
6 Check ignition timing. Refer to “Ignition Timing Inspection”
in Section 6F.
Is check result as specified? Go to Step 7. Go to “DIAGNOSIS”
in Section 6F.
7 Check fuel supply as follows:
1) Check to make sure that enough fuel is filled in fuel
tank.
2) Turn the ignition switch ON position for 3 seconds and
then turn it OFF position.
Repeat this a few times.
Is fuel return pressure (returning sounds) felt from fuel
return hose when the ignition switch is turned ON posi-
tion?
Go to Step 9. Go to Step 8.
8 Check fuel pump for operating.
1) Was fuel pump operating sound heard from fuel filler
for about 2 seconds after turning the ignition switch ON
position and stop?
Go to “Diag. Flow
Table B-3” in Section
6E. Go to “Diag. Flow
Table B-1” in Section
6E.
9 Check ignition plug and ignition spark. Refer to “Spark
Plug Inspection” and “Ignition Spark Test” in Section 6F.
Is it in good condition? Go to Step 10. Go to “DIAGNOSIS”
in Section 6F.
10 Check fuel injector. Refer to “Fuel Injector On-vehicle In-
spection” in Section 6E.
Is it in good condition? Go to “ENGINE
DIAGNOSIS TABLE”
in this section. Go to “Diag. Flow
Table B-2” in Section
6E.