Table 1. Error Code 126 - Joystick-to-ECU (790) Failure Troubleshooting Procedures - Cont

Table 1. Error Code 126 - Joystick-to-ECU (790) Failure Troubleshooting Procedures - Cont - TM-10-3930-675-20-1_574

Table 2. Error Code 130 - Overload Protection System Failure Troubleshooting Procedures - TM-10-3930-675-20-1_576

TM-10-3930-675-20-1 Rough Terrain Container Handler (RTCH): RT 240; 53 000 Lb Capacity; 4x4 Manual
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TM 10-3930-675-20-1 0040 00-3 BOOM LIFTING/LOWERING TROUBLESHOOTING - CONTINUED 0040 00 Table 1. Error Code 126 - Joystick-to-ECU (790) Failure Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Error Code 126 - Joystick-to-ECU (790) Failure - Continued i. Check resistance of joystick potentiometer: at joystick pin 9 to joystick pin 10 should be 1.1-1.4k ohms; joystick pin 9 to joystick pin 8 should be 1.7- 2.0k ohms; joystick pin 8 to joystick pin 10 should be 1.7-2.0k ohms. If resistance is not as specified, replace joystick (WP 0081 00). 2. Enter “DIAG SERVO 5 (13)” menu and check voltage of LIFT/LOWER. If voltage reads 5V, perform the following steps. a. Slowly move joystick forward and backward and observe voltage on menu. Voltage should be 1-10V. If voltage suddenly goes out of range when joystick is moved, replace joystick (WP 0081 00). b. Remove ECU (790) cover from operator’s seat base and slide ECU mounting tray out (WP 0079 00). c. Remove joystick cover. d. Check ECU (790) connector 1 and tray grounding leads and joystick connector X155 for proper connections. a. Connect any loose or disconnected connections. Push ECU mounting tray in and install cover. b. Repair or replace any damaged connectors (WP 0111 00). Push ECU mounting tray in and install cover.

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