Suzuki RA410, Manual

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6F1-4 IGNITION SYSTEM
DIAGNOSIS
Condition Possible Cause Correction
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 timing
Replace
Connect securely
Replace
Adjust, clean or replace
Replace
Adjust
Replace
Replace
Replace
Replace
Replace
Adjust
Poor fuel economy or en-
gine 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
STEP ACTION YES NO
1 Was “Engine Diagnostic Flow Table” in SECTION 6
performed? Go to Step 2. Go to “Engine Diag-
nostic Flow Table” in
SECTION 6.
2 Ignition Spark Test
1) Check all spark plug for condition and type, refer-
ring to “Spark Plug” in this section.
2) If OK, perform ignition spark test, referring to “Igni-
tion Spark Check” in this section.
Is spark emitted from all spark plugs?
Go to Step 11 on the
next page. Go to Step 3.
3 Diagnostic Trouble Code (DTC) Check
1) Check DTC stored in ECM (or PCM), referring to
“Diagnostic Trouble Code (DTC) Check” in SEC-
TION 6E.
Is DTC stored?
Go to applicable flow
table corresponding to
that code No. in SEC-
TION 6E. Go to Step 4.
4 Electrical Connection Check
1) Check ignition coil for electrical connection.
Are they connected securely?
Go to Step 5. Connect securely.
5 High-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).
6 Igniter Check
1) Check igniter, referring to “Igniter” in this section.
Is check result satisfactory?
Go to Step 7. Replace igniter.