42
K. DWELL TESTING (SEE FIGURE 12)
(figure 12)
It was very important in the past to test the dwell of the cut-off switch of an ignition system. The
dwell testing means the duration when the cut-off switch remains off when the cam is turning. Now
as an automobile is ignited electronically, it is no longer necessary to adjust the dwell. In addition,
the dwell testing can also be used to test a mixed-controlled solenoid.
1. Set the rotary switch to
DWELL
.
2. As prompted at the LCD connect terminal, insert the red test lead into the
terminal and
the black test lead into the
COM
terminal. Connect the ends to be tested as illustrated.
- If the cut-off switch of an ignition system is tested, connect the red test lead probe to the
primary negative end of the ignition coil. (Refer to the automotive servicing manual for the specific
position.)
- If the GM feedback carburetor is tested, connect the red probe to the ground terminal or the
computer drive of the solenoid. (Refer to the automotive servicing manual for the specific position.)
- If the dwell of an arbitrary ON/OFF equipment is tested, connect the red probe to the end of
the equipment, fixed with an ON/OFF switch.
3. Connect the black test lead probe to the good ground terminal of the automobile.
4. Read the ignition dwell of the tested automobile directly from the display.
Summary of Contents for egatronic 51259
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