TM 10-3930-675-20-10013 00-3ECU-TO-ECU COMMUNICATIONS TROUBLESHOOTING - CONTINUED0013 00Table 3. Error Code 107 -Cable Failure Between Tophandler ECU (791) and Display ECU (795)Troubleshooting Procedures - Continued.MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONError Code 107 - Cable Failure BetweenTophandler ECU (791) and Display ECU (795) -Continued3. Check that electrical wiringand connectors X180 andX185 along right side ofboom are secure.Connect any loose or missingconnections.4. Remove cover fromtophandler junction box andensure that tophandler ECU(791) connector 1 andjunction box internal wiresand connectors are secure(WP 0076 00).Connect any loose or missingconnections. Install tophandlerjunction box cover (WP 007600).5. Check for continuity betweenconnector X152 pins 1 and 2and connector X161 pins 4and 5. If continuity is not present,repair or replace connectors (WP0111 00).6. Check for continuity betweenconnector X161 pins 4 and 5and junction box X185 pins 4and 5. If continuity is not present,repair or replace connectors (WP0111 00).7. Check for continuity betweenconnector X185 pins 4 and 5and connector X180 pins 4and 5.If continuity is not present,repair or replace connectors (WP0111 00).8. Access display ECU (795)inside driver’s control panel(WP 0080 00).9. Disconnect display ECU(795) connector and check forcontinuity between ECUconnector pins 10 and 11 andconnector X152 pins 1 and 2.a. If continuity is present,reconnect display ECU (795)connector to driver’s controlpanel.b. If continuity is not present,repair or replace connectors(WP 0111 00). Connectdisplay ECU (795) connectorto driver’s control panel.
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