Suzuki Wagon R Plus RB310, Service Manual

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ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE) 6-2-109
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Drive vehicle under freeze frame data condition as noted for 1 min. or more.
4) Stop vehicle and check DTC and pending DTC.
Troubleshooting
Step Action Yes No
1 Was “Engine and Emission Control System Check” per-
formed? Go to Step 2. Go to “Engine and
Emission Control
System Check” in
this section.
2 Does fuel level meter indicate “E” level (empty)? Add fuel and recheck. Go to Step 3.
3 Ignition system inspection.
1) Check spark plug and ignition spark of cylinder
where misfire occurs, referring to “Spark Plugs
Inspection” and “Ignition Spark Test” in Section 6F2.
Is it in good condition?
Go to Step 4. Faulty ignition coil,
wire harness,
spark plug or other
system parts.
4 Fuel injector circuit 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 coupler con-
nection and wire
harness of injector
not making operat-
ing sound and
injector itself.
If OK, substitute a
known-good ECM
and recheck.
5 Fuel pressure inspection.
1) Check fuel pressure referring to “TABLE B-3 Fuel
Pressure Check” 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 “Fuel Injector
Inspection” in Section 6E2.
Is check result satisfactory?
Go to Step 7. Replace.
7 Ignition timing inspection.
1) Check ignition timing referring to “Ignition Timing
Inspection” in Section 6F2.
Is check result satisfactory?
Go to Step 8. Check related sen-
sors.
8 EGR system inspection.
1) Check EGR system referring to “EGR Valve Inspec-
tion” in Section 6E2.
Is check result satisfactory?
Go to Step 9. Repair or replace.