12
Test Procedures
TROUBLESHOOTING AND ELECTRICAL
SYSTEM: DIESEL VEHICLES
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
1130
Figure 12-37
Light Switch Test
TEST PROCEDURE 35 – Voltage at Headlight Socket
See General Warnings, Section 1, Page 1-2.
NOTE:
Keep the battery connected during this test procedure.
1.
Disable the vehicle.
See Disabling the Vehicle on page 1-3.
2.
Inspect the wires at the light bulb socket. Make sure the wires are securely fastened to the contacts inside
the socket.
3.
Remove the wire harness from the headlight bulb
4.
Use a multimeter set to 20 volts DC and place the black (–) probe into the black wire terminal of the wire harness.
Place the red (+) probe into the blue wire terminal.
5.
Pull the light switch to the ON position. If the multimeter indicates approximately 12 volts, replace the headlight
bulb.
6.
If there is no voltage reading at the wire harness, check the continuity of the 16-gauge blue wire (w01 and
w03) from the headlight to the light switch.
6.1. Set the multimeter to 20 VDC.
6.2. Use an alligator clip to attach the black (–) probe onto the negative (–) battery terminal and place the
red (+) probe into the blue wire terminal of the wire harness. If the multimeter reading is approximately
12 volts, the blue wire has continuity.
7.
Check the continuity of the 16-gauge black wire from the headlight to the ground terminal.
7.1. Set the multimeter to 20 VDC.
7.2. Place the black (–) probe of multimeter into the black wire (w13) terminal of the wire harness and use an
alligator clip to attach the red (+) probe onto the positive (+) battery terminal. If the multimeter reading is
approximately 12 volts, the black wire has continuity.
8.
If the readings are correct in all of the previous steps, replace the headlight bulb.
Page 12-40
2013 Carryall 295/XRT 1550 Maintenance and Service Manual
Содержание Carryall XRT 1550
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