INSPECTION OF ELECTRIC PARTS
1. Always disconnect the battery plug before performing electric part inspections or maintenance.
2. Be very careful when handling electric parts.
(1)
Do not subject electric parts such as computers or
relays to impacts.
(2) Do not subject electric parts to high temperatures or
humidity.
(3)
Do not touch the connector terminals, because
deformation or static electricity could cause a
malfunction.
I
I.
Use a circuit tester that suits the measurement object and obiective.
Analog system:Useful when viewing movements during operations and when viewing the operation
status. The measured values are used as a reference or as a guideline.
Digital system: Relatively accurate values can be obtained from the measurements. However,
sometimes difficult to understand when viewing operations or movements.
(1) Differences between the measurement results of the analog and digital systems
Sometimes there are differences between the measurement results of the analog and digital
systems.
See the instruction manual when using a circuit tester.
The information below describes the precautions required when there are polarity differences
between analog and digital circuit testers.
Forward direction Reverse direction
Forward direction Reverse direction
(a) Analog circuit tester
Measurement results example
Tester range:
kR range
Forward direction: Continuity
11
kR
Reverse direction: No continuity
oo
(b) Digital circuit tester
Measurement results example
Tester range:
2
MR range
Forward direction: Continuity 2
MR
Reverse direction: No continuity
1
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