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Page Title:
TRAILER RECEPTACLE CIRCUIT. (Cont) |
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 TM 9-2350-238-20-1
2-12. ELECTRICAL CIRCUIT TROUBLESHOOTING (CONT).
Make sure MASTER switch is OFF before repairing electrical
circuits. Failure to observe this warning could result in injury to
personnel.
Place red probe in socket J (lead 22). Ground black probe. Set MASTER
Step 3.
switch ON. Turn vehicular light switch to STOPLIGHT. Apply brakes. If
multimeter indicates about 24 volts, go to step 4. If multimeter indicates no
voltage, repair lead 22. Refer to page 2-371. Set MASTER switch OFF.
Turn vehicular light switch OFF.
Make sure MASTER switch is OFF before repairing electrical
circuits. Failure to observe this warning could result in injury to
personnel.
Place red probe in socket E (lead 21). Ground black probe. Set MASTER
Step 4.
switch ON. Turn vehicular light switch to SER DRIVE. If multimeter
indicates about 24 volts, go to step 5. If multimeter indicates no voltage,
repair lead 21. Refer to page 2-371. Set MASTER switch OFF. Turn
vehicular light switch OFF.
2-234
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