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How to check Power module
Checking power module using tester
Set tester to resistance range ( X 100).
If indicator does not swing in the following conductivity check, the power module is normal.
(In case of digital tester, since built-in battery is set in reverse direction, (>) and 'S) terminals are reversed.)
A CAUTION
if inner circuit of power module is disconnected (open), the indicator of tester will not swing and this may assumed as
normal.
In this case, if indicator swings when (>) and ('S) terminals are connected in reverse of diagram below, it is
normal. Furthermore, compare how indicator swings at U, V and W phases. If indicator swings the same way at
each point, it is normal.
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