TM-9-2320-366-20-1 MTV Unit Maintenance Manual M1083 Series - Volume 1 Download
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TM 9-2320-366-20-1  e49. ONE OR BOTH COMPOSITE TAILLIGHTS DO NOT ILLUMINATE (CONT)  2-612.4 Change 1  KNOWN INFO TEST OPTIONS  7.  Visual Inspection  REASON FOR QUESTION  This question eliminates  possible problems and  determines where to  continue troubleshooting.  POSSIBLE PROBLEMS  Faulty rear lights cable  assembly.  Faulty dashboard cable  assembly.  Other service light illuminates.  Circuit breaker CB80 OK.  Lamp OK.  Composite taillight  assembly OK.  Relay K20 OK.  Is vehicle M1085 or  M1086?  NO  Go to step 19 of fault. YES