TCM FB-8 Series, Service Manual

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3. TROUBLESHOOTING GUIDE
(25) -
22
: Load short circuit (Motor interphase short-
circuit)
Resets when the key switch is turned OFF.
-
91
: Overcurrent (Hardware OCL detected) Resets when the key switch is turned OFF.
①
Check the drive motor cable terminals U, V, and W
for foreign matter.
Remove the foreign matter.
②
Check the drive motor cable for looseness.
Retighten.
③
Check the drive motor cable for short circuit. Correct the cable.
④
Check the CN1D-24 terminal on the drive motor
inverter unit for proper connection.
Connect properly.
⑤
Check the harness for the CN1D-24 terminal on the
drive motor inverter unit.
Correct the wiring.
⑥
Refer to the repair procedure for Error Code 308.
⑦
Refer to the repair procedure for Error Code 216.
⑧
Replace the drive motor.
⑨
Replace the drive motor inverter unit.
(26) -
82
: EEPROM SUM error
Resets when the key switch is turned OFF.
-
83
: EEPROM ACK error
Resets when the key switch is turned OFF.
①
Replace the drive motor inverter unit if this error
occurs frequently.