IGNITION SYSTEM (ELECTRONIC IGNITION SYSTEM) 6F1-5
On-vehicle service
Ignition spark test
1) Disconnect all injector couplers (1) from injectors.
2) Remove spark plug and check it for condition and type refer-
ring to “Spark Plugs” in this section.
3) If OK, connect ignition coil coupler to ignition coil assembly
and connect spark plug to ignition coil assembly or high-ten-
sion cord. Ground spark plug.
4) Crank engine and check if each spark plug sparks.
5) If no spark is emitted, inspect the related parts as described
under “Diagnosis” earlier in this section.
High-tension cords
1) Disconnect high-tension cords (2) from ignition coil assem-
blies (1) while gripping each cap.
2) Pull out high-tension cords from spark plugs while gripping
each cap.
3) Measure resistance of high-tension cord (1) by using ohm-
meter.
High-tension cord resistance
: 10 – 22 kΩ/m (3.0 – 6.7 kΩ/ft)
4) If resistance exceeds specification, replace high-tension
cord(s).
WARNING:
Without disconnection of injector couplers, combustible
gas may come out from spark plug holes during this test
and may get ignited in engine room.
CAUTION:
• Removal of high-tension cords together with clamps
will be recommended so as not to damage their inside
wire (resistive conductor).
• For the same reason, pull out each connection by grip-
ping cap portion.
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