On-Vehicle Service; Ignition Spark Test; High-Tension Cords - MARUTI SUZUKI Zen Supplementary Service Manual

6F-6 IGNITION SYSTEM

ON-VEHICLE SERVICE

IGNITION SPARK TEST

1) Disconnect all injector connectors (1) from injectors (2).
WARNING:
Without disconnection of injector coupler, combus-
tible gas may come out from spark plug holes during
this test and may get ignited in engine room.
2) Disconnect all high-tension cords from spark plugs.
NOTE:
Always grip high-tension cord cap when disconnecting

high-tension cords.

3) Remove spark plugs and connect them to high-tension cords,
and then ground spark plugs.
4) Crank engine and check if each spark plug sparks.
5) If no spark is emitted, inspect high-tension cords, spark plugs,
ignition coil, distributor, igniter and other related parts.
HIGH-TENSION CORDS
REMOVAL
1) Remove high-tension cord from ignition coil while gripping its
cap.
2) Remove distributor cap with high-tension cords connected.
3) Detach high-tension cord clamp from cylinder head cover.
4) Pull out high-tension cords (1) from spark plugs while gripping
each cap (2).
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
gripping cap portion.
INSPECTION
1) Measure resistance of high-tension cord (1) by using ohmmeter
(2).
High-tension cord resistance
Z – 7E type : 7 k /m (2.3 k /ft)
Z – 16E type : 16 k /m (5.2 k /ft)
2) If resistance exceeds specification, inspect distributor terminal
and replace high-tension cord(s) and /or distributor cap as re-
quired.