TM 10-3930-675-20-10041 00-8BOOM IN/OUT TROUBLESHOOTING - CONTINUED0041 00Table 5. Error Code 163 - Extension Cylinder Boom OUT Control, Wiring Circuit FailureTroubleshooting Procedures - Continued.MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONError Code 163 - Extension Cylinder Boom OUTControl, Wiring Circuit Failure - Continuedb. Check continuity betweenconnector X159 pin 1 andconnector X158 pin 7.If continuity is not present,repair or replace connectors (WP0111 00).4. Perform voltage check atconnector block X154 pin 3. a. If 20-25V is present, checkcontinuity between con-nector X154 pin 3 and ECU(790) connector 2 pin 9.If continuity is not present,repair or replace connectors (WP0111 00).b. If no voltage is present,check continuity betweenconnector X154 pin 3 andemergency stop switch 250pin 2.If continuity is not present,repair or replace connectors (WP0111 00).5. Move operator’s cab totransport position and removetransmission rear accesscover (WP 0135 00).6. Disconnect electrical con-nector from boom outsolenoid 6006 and performvoltage check. If voltage isnot present, perform thefollowing continuity checks.If 20-25V is present at connector6006, replace boom out solenoid(WP 0169 00).Check continuity betweenconnector X158 pin 7 andsolenoid 6006 connectorpin 1 and betweenconnector X158 pin 8 andsolenoid 6006 connectorpin 2.a. If continuity is not present,repair or replace connectors(WP 0111 00). b. If wiring harness must bereplaced, notify SRA.7. Enter “DIAG SERVO 10(13)” menu and check currentof OUTPUT BOOM OUT.Current should be presentwith joystick activated tomove boom out.If current is not present, replaceECU (790) (WP 0079 00).
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