12
Test Procedures
TROUBLESHOOTING AND ELECTRICAL
SYSTEM: DIESEL VEHICLES
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.
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
485
Figure 12-37
Voltage At Headlight Socket
2101
Figure 12-38
Bed Lift Motor Wires
TEST PROCEDURE 36 – Bed Lift Motor
NOTE:
Keep the battery connected during this test procedure.
Ensure that the battery is fully-charged before performing this test procedure.
1.
Disable the vehicle.
See Disabling the Vehicle on page 1-3.
2.
Disconnect the red and yellow wires from the bed lift motor
3.
Set a multimeter for 20 VDC.
4.
Place the red probe in the bullet connector on the red wire (wire harness side) and place the black probe in the
bullet connector on the black wire (wire harness side)
.
5.
Have an assistant press the bed lift switch in the UP position and monitor the multimeter:
– A reading of approxi (positive) 12 VDC indicates that the bed lift harness and switch are wired
correctly. Proceed to step 6.
– A reading of approximately – (negative) 12 VDC indicates that the bed lift harness or switch are wired
incorrectly. Check the wiring of the bed lift harness and bed lift switch.
See Wiring Diagram on page 12-7.
– A reading of approximately 0 VDC indicates a failed bed lift switch, failed bed lift circuit breaker, a poor
connection in the bed lift wire harness, or a broken wire.
6.
Place the red probe in the bullet connector on the red wire (wire harness side) and place the black probe in the
bullet connector on the black wire (wire harness side)
.
7.
Have an assistant press the bed lift switch in the DOWN position and monitor the multimeter:
– A reading of approximately – (negative) 12 VDC indicates that the bed lift harness and switch are wired
correctly. Proceed to step 8.
– A reading of approxi (positive) 12 VDC indicates that the bed lift harness or switch are wired incorrectly.
Check the wiring of the bed lift harness and bed lift switch.
See Wiring Diagram on page 12-7.
Page 12-44
2016 Carryall 1500/1700 and XRT 1550 Maintenance and Service Manual
Summary of Contents for Carryall 1500 2016
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