Snap-On Diagnostics DGA 1000, Manual, Page: 52 / 116

3-4
Vehicle Testing
Setting Up the Vehicle
For all types of vehicle testing, gas display, TSI procedure or
catalytic testing, some vehicle information should be entered into
the analyzer as described in this section. Once this action is
completed, all types of test can be performed without reentering
the data.
1. Press the Vehicle Set-up key on the analyzer front panel or
the SETUP key on the remote control to access the Vehicle
Set-up Screen. The following settings must be done prior
to gas measurements using the standard default Gas
Value Display Screen:
✓
This screen displays automatically when performing a TSI
procedure.
RPM Selector
Use the RPM selector to select the correct setting to display
engine RPM. Press ENTER and the arrows (
) until the
correct number displays as follows and then press ENTER to
select.
— Setting 1: use when RPM pickup is connected to a single
plug wire.
— Setting 2: use for waste spark type engines.
— Setting to Match Engine Number of Cylinders: use if pickup
is connected to coil wire.
✓
If unsure which setting to use, with the engine running,
change the setting, observe the RPM display and use the
setting that results as the correct RPM value.
Ignition Systems with a Conventional Distributor
— When the RPM pickup is connected to the ignition coil
secondary wire, set the RPM selector to the number of
cylinders of the vehicle. The RPM signal is divided by the
number of cylinders to give the correct RPM indication. Set
the RPM selector to 1 when the RPM pickup is connected to
a cylinder’s spark plug wire.
Figure 3-1 : Vehicle Set-up Screen