TM-9-2320-334-13&P LHST Operator, Field and Parts Manual M1147A1 Trailer Download
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TM 9-2330-334-13&P LEFT BLACKOUT STOPLIGHT DOES NOT ILLUMINATE-Continued 0028 00 THIS WORK PACKAGE COVERS: Electrical System Troubleshooting Table 1. Left Blackout Stoplight Does Not Illuminate. Change 1 0028 00-2 INDICATION/CONDITION DECISION (NO/YES) PROCEDURAL STEPS 1. Is 18-30 VDC present at connector J257? No. Repair wire 116 (EM 0195) or replace left rear electrical harness (WP 0064 00). 1. Set multimeter to VDC. Yes. Replace left rear composite taillight (WP 0060 00). 2. Remove left rear composite light from trailer for access (WP 0060 00). 3. Disconnect connector J257 from left rear composite taillight. 4. Connect positive (+) probe of multimeter to connector J257. 5. Connect negative (-) probe of multimeter to a known good ground. 6. Position main light switch to B.O. DRIVE on towing vehicle, depress brake pedal, and note reading on multimeter. END OF WORK PACKAGE