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 2-690 Change 1 KNOWN INFO 11. POSSIBLE PROBLEMS Faulty REVERSE WARNING relay in WTEC II VIM. Faulty WTEC II transmission ECU pushbutton shift selector. REVERSE WARNING Relay Replacement Test REASON FOR QUESTION TEST OPTIONS NO 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 II transmission controls. WTEC II cab transmission harness OK. WTEC II dashboard cable assembly OK. Rear lights cable assembly OK. YES Replace REVERSE WARNING relay in WTEC II VIM (para 8-6). If backup lights operate with new REVERSE WARNING relay installed, REVERSE WARNING relay is faulty. If backup lights do not operate with new REVERSE WARNING relay installed, WTEC II TEPSS is faulty. Replace WTEC II TEPSS (para 8-2). Do backup lights operate with new REVERSE WARNING relay installed in WTEC II VIM?