Loading ...
Loading ...
Loading ...
7-7
E
–+
ELEC
ELECTRICAL ANALYSIS
Peak voltage measurement
NOTE:
● When checking the condition of the igni-
tion system it is vital to know the peak
voltage.
● Cranking speed is dependant on many
factors (e.g., fouled or weak spark plugs, a
weak battery). If one of these is defected,
the peak voltage will be lower than speci-
fication.
● If the peak voltage measurement is not
within specification the engine will not
operate properly.
● A low peak voltage will also cause compo-
nents to prematurely wear.
Peak voltage adaptor
NOTE:
● Throughout this chapter the peak voltage
adaptor’s part number has been omitted.
Refer to the following part number.
● The peak voltage adaptor should be used
with the digital tester.
● When measuring the peak voltage, con-
nect the peak voltage adaptor to the digi-
tal tester and switch the selector to the
DC voltage mode.
NOTE:
● Make sure that the adaptor leads are
properly installed in the digital tester.
● Make sure that the positive pin (the “+”
mark facing up as shown) on the adaptor
is installed into the positive terminal of
the tester.
● The test harness is needed for the follow-
ing tests.
Å Voltage measurement
ı Peak voltage measurement
Peak voltage adaptor:
YU-39991/90890-03169
Å
ı
Loading ...
Loading ...
Loading ...