Service Instructions; Spark Plug Removal And Installation; Spark Plug Inspection; Ignition Coil Removal And Installation - Suzuki DF70A Service Manual

Spark Plug Removal and Installation

Refer to "Spark Plug Removal and Installation" in
Section 0B (Page 0B-6).

Spark Plug Inspection

Refer to "Spark Plug Inspection and Cleaning" in Section
0B (Page 0B-7).

Ignition Coil Removal and Installation.

Removal
1) Disconnect the battery cables at the battery.
2) Disconnect the ignition coil connector (1).
3) Remove the bolt (2) securing the ignition coil, then
pull out the ignition coil (3).
Installation
1) Install the ignition coil, then secure the ignition coil
with its mounting bolt.
2) Connect the ignition coil connector.
3) Connect the battery cables to battery.

Ignition Coil Inspection

NOTE
The ignition coil power transistor and high
tension lead are an integral part of the coils
internal circuit. Using resistance
measurements to check for a defect on either
the primary or secondary coil is not possible.
Special tool
: 09930–99320 (Digital tester)
Tester knob indication
DCV
1) Turn the ignition key OFF.
2) Disconnect the ignition coil connector.
3) Check for continuity between the GND (–) terminal
on the wiring harness side connector and the engine
body ground.

Service Instructions

Z9J0111806001
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3
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4) Turn the ignition key to the ON position. Check for
battery voltage by measuring between the BAT (+)
terminal and GND terminal on the wiring harness
side connector.
5) Connect the wiring harness connector to the ignition
coil and measure the ignition operating signal.
Refer to "Ignition Coil Operating Signal Inspection"
(Page 1H-7).
• If any failure exists, check for open circuit, short
circuited battery, short circuited lead and
connector's contact condition for each circuit.
• If there is no spark even with the wiring harness
and spark plug in sound condition, perform the
inspection again using an ignition coil that is
known to be in good condition (new or used from
another cylinder that is operating properly).
• If there is still no spark even with the wiring
harness, spark plug and ignition coil in sound
condition, replace the ECM and perform the
inspection again.
Ignition System: 1H-6
GND +BAT
IGT
I9J011180004-03