HYBRID/TROUBLE SHOOTING
3–498
1.
Set the starter key to the "LOCK" position.
2.
Disconnect the three-phase cable (U, V, and W terminals) from the
HV motor.
3.
Using the megohm tester (500 V range), measure the insulation
resistance between the HV motor terminals and the housing. (For
the measurement procedure, see "HV motor insulation resistance
measurement procedure.")
4.
Using the electrical tester, measure the resistance between the
HV motor terminals.
HINT
If the motor temperature is too high, the resistance largely varies.
Therefore, measure the resistance at least 8 hours after the vehi-
cle has stopped.
NO
YES
2
Inspecting resistance between the HV motor phases
SHTS03ZZZ0300320
Measurement
conditions
Tester
connections
Standard values
Starter key: LOCK
(8 hours after the
vehicle has
stopped)
Insulation resis-
tance
U-phase terminal
–
Housing
V-phase terminal
–
Housing
W-phase terminal
–
Housing
Interphase resis-
tance
U-phase terminal
–
V-phase terminal
U-phase terminal
–
W-phase terminal
V-phase terminal
–
W-phase terminal
Insulation resis-
tance:
See "HV motor
insulation resis-
tance measure-
ment procedure."
Interphase resis-
tance:
38.2
–
40.5 M
(30
–
15
C
{86
–
59
F})
Is the measured value within the range of standard value?
Go to step 3.
Replace the HV motor.
After replacement, go to step 2.