TM-9-2320-366-20-1 MTV Unit Maintenance Manual M1083 Series - Volume 1 Download
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TEST OPTIONS REASON FOR QUESTION Voltage Test or STE/ICE-R Test #89 2. WARNING CAUTION Read WARNING and CAUTION on following page. Is 12 VDC present at connector P87? KNOWN INFO POSSIBLE PROBLEMS Faulty backup light assembly. Faulty dashboard cable assembly. Faulty WTEC II cab transmission harness. Faulty rear lights cable assembly. Faulty REVERSE WARNING relay in WTEC II VIM. Faulty WTEC II transmission ECU pushbutton shift selector. Faulty WTEC III relay K25. Faulty WTEC III transmission ECU. e55. BACKUP LIGHT DOES NOT ILLUMINATE (CONT) Replace backup light assembly (para 7-36). Circuit breaker CB70 OK. Circuit breaker CB73 OK. Both turn signals illuminate. Engine starts. Transmission reverse (R) range OK. Backup light lamps OK. TM 9-2320-366-20-1 2-672 Change 1 NO YES Go to step 3 of this fault. If 12 VDC is present, backup light assembly is faulty.