TM 10-3930-675-20-1
0040 00-1
BOOM LIFTING/LOWERING TROUBLESHOOTING
0040 00
THIS WORK PACKAGE COVERS
Error Code 126 - Joystick-to-ECU (790) Failure
Error Code 130 - Overload Protection System Failure
Error Code 151 - Lift Cylinder Locking Valve, Wiring
Circuit Failure
Error Code 152 - Lift Cylinder Locking Valve, Compo-
nent Failure
Error Code 154 - Lift Cylinder Boom Up Valve, Wiring
Circuit Failure
Error Code 155 - Lift Cylinder Boom Up Valve, Com-
ponent Failure
Error Code 157 - Lift Cylinder Boom Down Valve, Wir-
ing Circuit Failure
Error Code 158 - Lift Cylinder Boom Down Valve,
Component Failure
INITIAL SETUP
References
TM 10-3930-675-10
Current Supply (A34738.0200) (WP 0199 00-31)
ECS Electrical Servo (A34648.0200) (WP 0199 00-5)
NOTE
•
Refer to WP 0004 00 for additional troubleshooting guidance, information, and illustrations
that locate critical components.
•
Refer also to illustrations at end of work package for component location.
Table 1. Error Code 126 - Joystick-to-ECU (790) Failure Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 126 - Joystick-to-ECU (790) Failure
1. Enter “DIAG SERVO 5 (13)”
menu
and
check
LIFT/
LOWER voltage. If voltage is
out of range, perform the
following steps:
a. Remove ECU (790) cover
from operator’s seat base
and slide ECU mounting
tray out (WP 0079 00).
DIAG SERVO
5(13)
LIFT/LOWER
5.00V
BOOM IN/OUT
5.00V
