TM-9-2320-366-20-1 MTV Unit Maintenance Manual M1083 Series - Volume 1 Download
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e55. BACKUP LIGHT DOES NOT ILLUMINATE (CONT) TM 9-2320-366-20-1 2-692 Change 1 KNOWN INFO REASON FOR QUESTION TEST OPTIONS 12. POSSIBLE PROBLEMS Faulty WTEC III relay K25. Faulty WTEC III dashboard cable assembly. Faulty rear lights cable assembly. Faulty WTEC III transmission ECU. Continuity Test or STE/ICE-R Test #91 Is continuity present from WTEC III relay K25 terminal 86 to terminal 85? If continuity is not present, WTEC III relay K25 if faulty. Circuit breaker CB70 OK. Circuit breaker CB73 OK. Both turn signals illuminate. Engine starts. Transmission reverse (R) range OK. Backup light lamps OK. Backup light assembly OK. WTEC III transmission controls. NO Replace WTEC III relay K25 (para 7-9). YES