TM 10-3930-675-20-1
0038 00-1
HYDRAULIC PISTON PUMP CUT-OFF TROUBLESHOOTING
0038 00
THIS WORK PACKAGE COVERS
Error Code 172 - Hydraulic Piston Pump Cut-Off, Open or Short Circuit 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 illustration at end of work package for component location.
Table 1. Error Code 172 - Hydraulic Piston Pump Cut-Off, Open or Short Circuit Failure
Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 172 - Hydraulic Piston Pump Cut-
Off, Open or Short Circuit Failure
1. Remove ECU (790) cover
from operators seat base and
slide ECU mounting tray out
(WP 0079 00).
2. Check ECU (790) connector
2 and ECU tray grounding
leads for proper connection.
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.
3. Access EXTRA FUNC. 2
(13) menu and test pump
cutoff function.
a. If cutoff function does not
work, proceed to step 4.
b. If cutoff function works,
proceed to step 10.
4. Disconnect electrical con-
nector from pump cut-off
valve solenoid 611 and
perform voltage check at
connector 611.
If 20-25V are present at
connector 611, replace pump
cut-off valve solenoid (WP 0169
00).
TEST OR INSPECTION-
EXTRA FUNCT.
2(13)
CUT-OFF THE
0
HYDRAULIC PUMP
