6F-4
IGNITION SYSTEM
SH410
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
engine 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 Plugs” 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 6E1.
Is DTC stored?
Go to applicable flow
table corresponding to
that code No. in SEC-
TION 6E1.
Go to Step 4.
4
Electrical Connection and Noise suppressor Check
1) Check ignition coil for electrical connection and
noise suppressor for conductivity.
Are they in good condition?
Go to Step 5.
Repair or replace.
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).
Содержание Zen
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Страница 233: ...6E1 6 ENGINE AND EMISSION CONTROL SYSTEM SH410 ...
Страница 358: ... SH410 Prepared by Overseas Service Department 1st Ed January 2000 Printing January 2000 356 ...