Club Car 2007 Carryall 295 Maintenance And Service Manual page 265

TROUBLESHOOTING AND ELECTRICAL SYSTEM: DIESEL VEHICLES
WAVETEK 5XL
V V
OFF
1000 500
200 200
20 200
4
2 2m
200
20
m
m
200
2000
m
k
200k
20k 200 1
2k A
V ! COM ! 200nA
MAX
1000 ---
FUSED
750V
WAVETEK 5XL
V V
OFF
1000 500
200 200
5
20 200
2m
2
200
20
m
m
200
2000
m
k
200k
20k 200
A
2k
2
V ! COM ! 200nA
MAX
1000 ---
FUSED
750V
WAVETEK 5XL
V V
OFF
1000 500
200 200
6
20 200
2 2m
200
20
m
m
2000 200
m
k
200k
200
20k
2k A
2
V ! COM ! 200nA
MAX
1000 ---
FUSED
750V
Figure 11c-25 Basic Diode Information
1. VOM Black Lead 2. VOM Red Lead 3. Wiring Diagram Symbol
with Diode Stripe Orientation 4. Good Diode (Probe Scenario A) -
Conducts Current and Shows Continuity 5. Good Diode (Probe
Scenario B) - No Continuity 6. Bad Diode - Meter Beeps In Either
Direction (Probe Scenarios A and B)
The early 2-piece wire harness is equipped with six in-line diodes. It was later replaced with a 1-piece wire
harness retaining four of the in-line diodes (diodes 1, 2, 5, & 6). The following table describes each diode's
function in the electrical system, location in the wire harness, and symptom(s) of failure.
DIODE TROUBLESHOOTING GUIDE
IN-LINE WIRE
DIODE LOCATION
(WIRES)
Diode 1 w32 and w35
Diode 2 w40 and w41
Diode 3 w144 and w139
Troubleshooting Guide continued on next page...
2007 Carryall 295/295 SE & XRT 1550/1550 SE Gasoline, Diesel and IntelliTach M & S Manual
A
2
3
( )
B
1
1 2
1
FUNCTION
Differential solenoid coil flyback
diode
Fan motor flyback diode
Differential relay coil isolation diode
(blocking diode) – Early 2007 Only
FAILURE
SYMPTOM/COMMENT
CONDITION
Will contribute to the premature
Open failure of the differential relay or
limit switch contacts.
With key switch ON, the 30-amp
Closed fuse (on w125) will blow repeatedly
until the diode has been replaced.
Will contribute to the premature
Open
failure of the fan relay contacts.
The 30-amp fuse (on w109) will
Closed blow repeatedly until the diode has
been replaced.
Differential solenoid is energized all
of the time, even when Forward/
Open
Reverse handle is in the NEUTRAL
position.
May allow the vehicle to be started
Closed when Forward/Reverse handle is in
FORWARD or REVERSE positions.
11C
Test Procedures
Page 11c-29