TROUBLESHOOTING AND ELECTRICAL
SYSTEM: DIESEL VEHICLES
Test Procedures
12
TEST PROCEDURE 21 – Alternator
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.
Ensure that the wires are connected correctly and are tight. If they are not, rewire or tighten as necessary.
3.
Check engine RPM setting to ensure it is adjusted correctly.
See Engine RPM Adjustment on page 16-19.
4.
With the battery in good condition and fully charged, run the engine for several minutes to bring the voltage
regulator to operating temperature.
5.
Set the multimeter for 20 VDC.
6.
With the engine running at full-governed RPM, measure the battery voltage at the battery posts. If the reading
is between 14.2 and 14.8 volts, the alternator is good. If the reading is less than 14.2 volts but rising steadily,
check battery condition.
See Test Procedure 1 – Battery on page 12-10.
7.
If the reading is less than 14.2 volts and not rising or higher than 14.8 volts, replace the alternator.
TEST PROCEDURE 22 – 60-Amp Fusible Link
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.
Raise the driver side seat and locate blue fusible link wire attached to alternator
2122
Figure 12-28
60-Amp Fusible Link
3.
The easiest way to test them is to tug on them. A blown link will stretch like a rubber band. Fusible links can
either fail gradually or suddenly, depending on the cause. Sluggish electrical accessories, an unusual pause
before the starter turns, and odd behavior of accessories plugged into the power socket are all symptoms
of a failing fusible link.
4.
Ensure that the nuts securing the link to the alternator and the large post of the starter solenoid are connected
correctly and are tight. If they are not, rewire or tighten as necessary.
5.
Set the multimeter to 20 VDC.
6.
Place the black (–) probe on the frame (ground).
2016 Carryall 1500/1700 and XRT 1550 Maintenance and Service Manual
Page 12-33
Summary of Contents for Carryall 1500 2016
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