On-Vehicle Service; Ignition Spark Test; High-Tension Cords - Suzuki Jimny Service Manual

On-Vehicle Service

Ignition Spark Test

1) Disconnect all injector connectors (1) from injectors.
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.
2) Remove cylinder head upper cover.
3) Remove spark plug and check it for condition and type refer-
ring to "Spark Plugs" in this section.
4) If OK, connect ignition coil connector to ignition coil assem-
bly and connect spark plug to ignition coil assembly or high-
tension cord. Ground spark plug.
5) Crank engine and check if each spark plug sparks.
6) If no spark is emitted, inspect the related parts as described
under "Diagnosis" earlier in this section.

High-tension Cords

1) Remove cylinder head upper cover and disconnect high-ten-
sion cords (2) from ignition coil assemblies (1) while gripping
each cap.
2) Pull out high-tension cords from spark plugs while gripping
each cap.
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.
3) Measure resistance of high-tension cord (1) by using ohm-
meter.
High-tension cord resistance
Ω
4 – 10 k /m (1.2 – 3.0 k
4) If resistance exceeds specification, replace high-tension
cord(s).
IGNITION SYSTEM (ELECTRONIC IGNITION SYSTEM 6F-5
Ω
/ft)