TCM FB20-8 - Page 219

- 57 -
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.