Scope and Multimeter Operations
Ignition Scope
134
Waste Spark
Waste Spark is used for coil pack systems that fire two plugs simultaneously.
1.
Enter the
Number of Cylinders
.
2.
Select the
Firing Order
.
3.
Check the engine firing polarity and change the Polarity setting to match it by
using the + and - buttons.
Setup Notes:
–
Connect the #1 trigger lead to cylinder #1.
–
To test a single coil, set the number of cylinders to 2.
–
When testing Wasted Spark systems, power firings will display on Channel
One and waste firings on Channel Two.
4.
Refer to the following sections for additional ignition scope settings:
–
Traces (Ignition Scope Trace Setup)
–
Sweep (Ignition Scope Sweep Setup)
–
For common settings within the Preferences menu, see
.
Figure 9-61
Direct Ignition
Direct is used for coil-on-plug systems.
1.
Enter the
Number of Cylinders
.
2.
Select the
Firing Order
.
Setup Notes:
–
Plug is preset as the setting for Number 1 Trigger setting.
–
Connect the #1 trigger lead to cylinder #1. (For vehicles without a plug wire,
this connection may not be possible. As an alternate method that may work,
try clamping around the #1 cylinder primary coil driver wire or all primary
wires if they are tightly bundled.)
3.
Refer to the following sections for additional ignition scope settings:
–
Traces (Ignition Scope Trace Setup)
–
Sweep (Ignition Scope Sweep Setup)
–
For common settings within the Preferences menu, see
Figure 9-62
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