Club Car Carryall 1500 Maintenance And Service Manual page 200

12
Test Procedures
DIODE TROUBLESHOOTING GUIDE
IN-LINE WIRE
DIODE LOCATION
(WIRES)
Diode 2 w40 and w41
Diode 3 w123 and w130
Diode 4 w129 and w131
TEST PROCEDURE 13 – Diode 1 on wire 32
See General Warnings, Section 1, Page 1-2.
1. Disconnect battery. See Disconnecting the Battery – Gasoline/Diesel Vehicles, Section 1, Page 1-3.
2. Disconnect the two-pin connector between the front gearcase and the wire harness.
3. Set the multimeter to the diode test function.
4. Connect the black (–) probe of the multimeter to the frame (ground).
5. Connect the red (+) probe of the multimeter to the 18-gauge gray wire (w35) on the two-pin connector (wire
harness side). See following NOTE.
NOTE: Ensure probe is connected to the correct gray wire. Gray wire (w33) is powered up by the key switch. Gray
wire (w35) is attached to diode 1.
6. The reading should indicate an over limit (no continuity). If the diode conducts current (shows continuity) with
the meter probes connected as described, the diode has failed and must be replaced. See Wire Harness
Diode Removal on page 14-21.
7. Reverse the multimeter probes and note the reading. The multimeter should indicate approximately 540 mV,
however, a range of 400 to 700 mV is acceptable.
8. If the readings obtained in the previous steps are incorrect, replace the diode. See Wire Harness Diode
Removal on page 14-21.
TEST PROCEDURE 14 – Diode 2 on wire 40
See General Warnings, Section 1, Page 1-2.
1. Disconnect battery. See Disconnecting the Battery – Gasoline/Diesel Vehicles, Section 1, Page 1-3.
2. Raise the hood.
3. Disconnect the two-pin connector between the fan and the wire harness (Figure 12-18, Page 12-22).
4. Set the multimeter to the diode test function.
Page 12-24 2015 Carryall 1500/1700 and XRT 1550 Maintenance and Service Manual
FUNCTION
Fan motor flyback diode
Fuel pump and hold coil flyback diode
Starter solenoid coil flyback diode
TROUBLESHOOTING AND ELECTRICAL
SYSTEM: DIESEL VEHICLES
FAILURE
SYMPTOM/COMMENT
CONDITION
Will contribute to the premature failure
Open
of the fan relay contacts.
The 30-amp fuse (on w109) will blow
Closed repeatedly until the diode has been
replaced.
Will contribute to the premature failure
Open
of the key switch contacts.
The 30-amp fuse (on w125) will blow
Closed repeatedly until the diode has been
replaced.
Will contribute to the premature failure
Open
of the start relay contacts.
The 30-amp fuse (on w109) will blow
Closed repeatedly until the diode has been
replaced.