Table 2-2. Unit Troubleshooting -continued
TEST OR INSPECTION
FLATBED CARGO TRAILER ELECTRICAL SYSTEM (Model WPES-1) - continued
Step 3. Check that chassis ground wire is securely mounted to the trailer.
a. If ground wire is loose, tighten it.
b. If ground wire appears tight, remove it, clean the mounting surfaces and reinstall securely.
Step 4. Check for 24 VDC between chassis wiring harness connectors and chassis.
a. If 24 VDC is measured on all lines, repair light assemblies. Refer to paragraph 2-93.
b. If 24 VDC is not measured on all lines, replace chassis wiring harness. Refer to paragraph 2-95.