6-21
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TROUBLESHOOTING
"Blade motor" MESSAGE
"Wheel motor blocked" MESSAGE
The temperature of work motor driver (Main
ECU) is more than 85 °C.
Less than 85 °C
Abnormal
More than 85 °C
Main ECU trouble.
Replace the main ECU (page 10-7).
Let the mower cool down for an hour at
ambient temperature and above 5 °C.
Check if warning displayed disappeared.
No continuity
Replace or repair the main wire harness.
Both traction motors or one side traction motor
does not turn.
Traction motor(s) trouble.
Replace the traction
motor(s) (page 8-3).
Only one side motor
Measure the resistance between the RH or LH
traction motor 8P connector
or
terminals.
Traction motor winding: 1.1 - 1.3
Ω
·No.5 terminal (Black) - No.6 terminal (White)
·No.5 terminal (Black) - No.7 terminal (Red)
·No.6 terminal (White) - No.7 terminal (Red)
Normal
Measure the resistance between the RH and LH
traction motor 8P connector
and
terminals.
Traction motor winding: 1.1 - 1.3
Ω
·No.5 terminal (Black) - No.6 terminal (White)
·No.5 terminal (Black) - No.7 terminal (Red)
·No.6 terminal (White) - No.7 terminal (Red)
Main ECU trouble.
Replace the main ECU (page 10-7).
Abnormal
Both motors
Check for continuity between the main ECU
30P connector
and display 8P
connector
of main wire harness.
·30P connector
No.18 terminal (Brown)
- 2P connector
No.8 terminal (Brown)
Continuity
Main ECU trouble.
Replace the main ECU (page 10-7).
Normal
Abnormal
Содержание HRM300
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