Toro Reelmaster 5010-H Diagnostic Manual page 234

Step 7: Inspect the wiring for cutting reel motor 2.
1. Go to Preparing for Troubleshooting and/or Testing (page 22)
2. Unplug the 48 Vdc battery disconnect to prevent unexpected cutting unit operation. Refer to
and Disconnecting the 48 Vdc Battery System (page
3. Disconnect main harness connectors P38 and P39 from the cutting reel motor cable connectors mounted
on the traction unit.
4. Inspect the 2 cutting reel motor cable connectors and the 2 main harness connectors for damage,
corrosion, debris, and proper alignment of the pins inside the connectors.
Pass The wiring inspection passed. Go to Step 8.
Fail One or more of the inspection checks failed. Repair or replace the worn or damaged parts. Go to
Returning the Machine to Service (page 22)
Step 8: Measure 48 Vdc power in main harness connectors P38 and
P39.
Note:
Connector diagrams are available in Step 9.
1. Verify that the engine is shut off.
2. Disconnect main harness connectors P38 and P39 from the cutting reel motor cable connectors.
3. Rotate the ignition key to the O
4. Measure the voltage between pins 1 and 2 of connector P39. The reading should be 48 Vdc.
5. Measure the voltage between P38 pin 1 and P39 pin 2. The reading should be 48 Vdc.
6. Rotate the ignition key to the O
Pass
The voltage readings were good. Go to Step 10.
Fail The voltage readings were not good. Go to Step 9.
Step 9: Test the power and ground wiring in main harness connectors
P38 and P39.
These are diagnostic steps to help isolate problems identified in Step 8. Use a multimeter to test the resistance
between the following pairs of locations:
Location Harness
1 Main
2 Main
position.
N
position.
FF
Connector Pin
P39 1
P37 3
and follow the steps listed.
19).
and follow the steps listed.
Wire Expected
Color Reading
Red
Less than
2 ohms
Red
234
Connecting
Connector Graphic