Getting Started
Trouble
Shooting
1.
Meter will not turn
ON.
Check the battery contacts for a tight fit.
Check for a minimum battery voltage of
8.0
volts
Make sure the battery wires are not pinched in the case
2.
Ampere reading is erratic or there is no reading at all.
Disassemble the meter back cover and test the fuses for
continuity.
3.
Meter reading
is
erratic.
Printed circuit board contaminated from handling with hands.
Low battery.
a
Open circuit in a test lead (fraved or broken wire).
Wrong range selected.
For frequencies below
1
Hz,
the display will show
00.00
Hz
"Blown" fuse.
4.
Meter readings do not change.
"Hold" feature is still toggled ON
Basic Diagnostic Testing
This chapter leads you through a systematic series of tests that
check the vehicle electrical system. These tests should be performed
before testing individual components.
ZCROA
YAWYIN
RANGE
HOW
PWR-RST
~IOOOO0~
RPM
IIQRPU
RPY
DWELL
--
c
-
--
20AE
I I
TYPE
K
AUTO
POWER
OFF
II
8
20A
m
A
COM
RPM
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