TROUBLESHOOTING AND ELECTRICAL SYSTEM:
KEY-START WITH NEUTRAL REV GAS VEHICLE
Test Procedures
11
TEST PROCEDURE 28 – Headlight Diode
See General Warning on page 1-1.
1.
Turn the key switch OFF and remove the key. Place the Forward/Reverse handle in the NEUTRAL position.
Chock the wheels.
2.
Disconnect battery and spark plug wire(s).
See Disconnecting the Battery – Gasoline Vehicles, Section
3.
Remove the instrument panel.
See Key Switch Removal, Section 13, Page 13-17.
4.
Using a multimeter set on 20 volts DC, connect the red (+) probe to the light switch terminal with the yellow
wire
5.
Loosen the black wire connector (on the end of the long black wire) at the headlight diode assembly just enough
to maintain the connection and yet expose part of the metal terminal in the connector. Place black (–) probe on
the connector
6.
Connect battery and spark plug wire(s).
See Connecting the Battery – Gasoline Vehicles, Section 1, Page 1-3.
7.
Pull the light switch to the ON position. The reading should be 11-12 volts. If the there is no voltage reading,
check continuity of the 16-gauge black wire from the headlight to the headlight diode. Check continuity of the
16-gauge black wire from headlight diode to the vehicle frame. If the wires show continuity and the readings are
still incorrect, replace the headlight diode.
See Voltage Limiter Removal, Section 13, Page 13-34.
8.
With the Forward/Reverse handle in the NEUTRAL position and the wheels chocked, start the engine and
press the accelerator pedal to the floor.
9.
Push the light switch to the OFF position. The reading should be 14.7-15.3 volts.
10. Pull the light switch to the ON position. The reading should be 11-13 volts. If the reading does not drop from
14.5-15.5 volts to 11-13 volts, replace the voltage limiter.
TEST PROCEDURE 29 – Voltage at Headlight Socket
See General Warning on page 1-1.
NOTE:
Keep the battery connected while performing this test procedure.
1.
Turn the key switch OFF and remove the key. Place the Forward/Reverse handle in the NEUTRAL position.
Chock the wheels.
2m
20
m
200
m
2k
200
200
200
200
20
2
200
m
500
20k
200k
2000
k
1000
OFF
WAVETEK
5XL
V
V
V
A
!
!
COM
200nA
MAX
1000 ---
750V
FUSED
2
3
4
7
1
5
6
1. 20 VDC Setting 2. Light Switch 3. Yellow Wire 4. Blue Wire 5. Voltage Limiter 6. Black Wires 7. Frame Ground
484
Figure 11-41
Headlight Diode Circuit Test
2007-2009 Turf 252, Carryall 252 and XRT 900 Maintenance and Service Manual
Page 11-37