Equus 3340 - Automotive DMM (10 MegOhm / UL) User Manual

Page 17

Place the RED test lead onto the “Tachometer Signal port”
of the vehicle’s ignition system, or onto the negative (-) side
of the ignition coil. Place the BLACK test lead onto a good
chassis ground or the negative (-) terminal of the battery.

NOTE: If your vehicle is equipped with a COP (Coil On

Plug) system and you are using the

setting, make the

RED test lead connection to the negative (-) side of one of

the ignition coils.

Set the tester’s Function/Range Selector Switch to the
or

position, as appropriate (see Controls and

Indicators, Items 13 and 14).

Press the CYL button, as necessary, until the correct num-
ber of cylinders for the vehicle under test is shown on the
display.

NOTE: Cylinder selection is not applicable to COP (Coil On

Plug) systems.

Start the engine and read the results on the display.

M. DWELL ANGLE MEASUREMENT

NOTE: Turn the vehicle’s engine “off” BEFORE connecting the

multimeter for DWELL ANGLE MEASUREMENT.

Plug the RED test lead into the

jack of the tester; plug

the BLACK test lead into the "COM" jack.

Place the RED test lead to the “BREAKER POINTS” or “-”
terminal of the ignition coil and the BLACK test lead to
“GROUND” or the “-” terminal of the battery.

Set the tester’s Function/Range Selector Switch to the
position (see Controls and Indicators, Item 15).

Press the CYL button, as necessary, until the correct num-
ber of cylinders for the vehicle under test is shown on the
display.

Start the engine and read the results on the display.

AUXILIARY FUNCTIONS

A. DATA HOLD FUNCTION

The data HOLD function lets you “lock” the currently displayed
value into the display. The value remains on the display until the
function is turned “off.”