Suzuki 2000 Grand Vitara SQ416, Руководство по обслуживанию

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YH4
GRAND
VITARA
ENGINE (H25 ENGINE) 6-1-89
DTC TROUBLESHOOTING
STEP ACTION YES NO
1 Was “ENGINE DIAG. FLOW TABLE” performed? Go to Step 2. Go to “ENGINE
DIAG. FLOW
TABLE”.
2 Ignition System inspection:
(1) Check spark plug and ignition spark of cylinder
where misfire occurs, referring to “IGNITION
SYSTEM” section.
Is it in good condition?
Go to Step 3. Faulty ignition coil,
wire harness or spark
plug.
If OK, substitute a
known-good ECM
(PCM) and recheck.
3 Fuel Injector Circuit check:
(1) Check fuel injector circuit referring to “TABLE B-2”
in this section.
Is it in good condition?
Go to Step 4. Repair or replace.
4 Fuel Injector Operation check:
(1) Using sound scope, check each injector operating
sound at engine cranking or idling.
Do all injectors make operating sound?
Go to Step 5. Check injector not
making operating
sound.
If OK, substitute a
known-good ECM
(PCM) and recheck.
5 Fuel Pressure inspection:
(1) Check fuel pressure referring to “TABLE B-3” in this
section.
Is check result satisfactory?
Go to Step 6. Repair or replace.
6 Fuel Injector inspection:
(1) Check fuel injector(s) referring to “ENGINE AND
EMISSION CONTROL SYSTEM” section.
Is check result satisfactory?
Go to Step 7. Replace.
7 Ignition Timing inspection:
(1) Check ignition timing referring to “IGNITION
SYSTEM” section.
Is check result satisfactory?
Go to Step 8. Adjust.
8 EGR System inspection:
(1) Check EGR system referring to “ENGINE AND
EMISSION CONTROL SYSTEM” section.
Is check result satisfactory?
Go to Step 9. Repair or replace.
9 Fuel Level Sensor inspection:
(1) Check fuel level sensor referring to “ENGINE AND
EMISSION CONTROL SYSTEM” section.
Is check result satisfactory?
Go to Step 10. Repair or replace.
10 Engine Mechanical Systems check:
(1) Check engine mechanical systems referring to
“ENGINE MECHANICAL” section.
Is check result satisfactory?
Substitute a known-
good ECM (PCM)
and recheck. Repair or replace.