Toro Reelmaster 5010-H Diagnostic Manual page 128

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 7.
Fail The voltage readings were not good. Go to Step 6.
Step 6: Test the power and ground wiring in main harness connectors
P38 and P39.
These are diagnostic steps to help isolate problems identified in Step 5. Use a multimeter to test the resistance
between the following pairs of locations:
Location Harness
1 Main
2 Main
1 Main
2 Main
1 Main
2 Main
Pass The resistance tests passed, but the voltage readings in Step 5 are still bad.
Note:
Do not go to Step 7 until after the voltage readings in Step 5 are good.
Fail One or more of the power and ground wiring tests failed. Repair or replace the worn or damaged
parts. Go to
position.
N
position.
FF
Pin
Connector
P39 1
P37 3
P39 2
P37 4
P38 1
P39 2
Returning the Machine to Service (page 22)
Wire Expected
Color Reading
Red
Less than
2 ohms
Red
Black
(48V
Ground)
Less than
2 ohms
Black
(48V
Ground)
White
24k to 26k
ohms
Black
(48V
Ground)
and follow the steps listed.
128
Connector Graphic