TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
4.
MAIN FRAME WORKLIGHT DOES NOT OPERATE (continued).
2.
KNOWN INFO
TEST OPTIONS
Error Codes, EC11 and
Visual inspection.
Are both the worklight
EC12
and the hand-held
REASON FOR QUESTION
Worklight bulb OK.
spotlight inoperative?
To isolate the location
POSSIBLE PROBLEMS
in the circuit where fault
Worklight switch faulty.
exists.
Wire no. 40 faulty.
Supply harness faulty.
Cab control box faulty.
Linking harness faulty.
Main junction box faulty.
MODEL A, Go to
Main frame junction box
Step 5.
harness faulty.
NO
MODEL B, Go to
Worklight harness faulty.
Step 11.
YES
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