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3. IPM continuity check
Electricity remains in capacitors even when the power supply is off. Ensure the capacitors are fully discharged before
troubleshooting.
Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital
tester to measure the resistance between P and UVWN; UVW and N.
Digital tester Normal resistance value
Digital tester Normal resistance value
(+)Red (-)Black
∞
(Several MΩ)
(+)Red (-)Black
∞
(Several MΩ)
P
N
U
N
U
V
V
W
W
(+)Red
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