IGNITION SYSTEM
SERVICE INFORMATION
GENERAL
• The ECM may be damaged if dropped. Also, if the connector
is
disconnected when current
is
flowing, the excessive voltage may
damage the ECM. Always turn the ignition switch OFF before servicing.
• Use spark plug with the correct heat range. Using spark plug with an incorrect heat range can damage the engine.
• Some electrical components may be damaged if terminals or connectors are connected or disconnected while the ignition switch
is
turned
ON
and current
is
present.
• When servicing the ignition system, always follow the steps
in
the troubleshooting (page 5-5).
• The ignition timing cannot
be
adjusted since the ECM
is
factory preset.
• A faulty ignition system
is
often related to poor connections. Check those connections before proceeding.
• Make sure the battery
is
adequately charged. Using the starter with a weak battery results
in
a slower engine cranking speed
as
well as
no
spark at the spark plug.
• Inspect the following:
- Spark plug (page 3-9)
- Ignition switch (page 21-22)
- CKP sensor (page 6-11)
• Refer to CKP sensor service (page 14-4
).
SPECIFICATIONS
Spark plug
Spark plug gap
Ignition coil peak voltage
Ignition timing
TOOLS
Peak voltage adaptor
O?HGJ-0020100
(Not available
in
U.S.A.)
ITEM
with commercially available digital
multimeter (impedance
10
MO/DCV
minimum)
5-4
lgnitionMate peak voltage tester
MTP0?-0286 (U.S.A. only)
SPECIFICATIONS
CPR?EA-9 (NGK)
0.8 - 0.9 mm (0.03 - 0.04 in)
100 V minimum
12° BTDC at idle speed
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