TM 10-3930-675-24-1
HYDRAULIC PISTON PUMP CUT-OFF TROUBLESHOOTING - CONTINUED
0038 00
Table 1. Error Code 172 - Hydraulic Piston Pump Cut-Off,
Open or Short Circuit Failure Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 172 - Hydraulic Piston Pump Cut-Off, 2. Check voltage at X158 a. If voltage (21 to 24V) is found
Open or Short Circuit Failure - Continued.
between pin 13 and pin 14 with
continuously,
disconnect
X158 and check the resistance
8). Should have voltage (21 to
on the loose part of X158
24V).
between pin 13 and pin 14.
Resistance should be 40 to 43
Ohms. Check resistance to
ground at either pin.
b. If no voltage (21 to 24V) is
found, disconnect ECU (790)
connector 2 and check pin 6
for damage and check
c. Repair or replace damaged
wires or connectors (WP 0113
00).
d. Replace damaged ECU (790)
(WP 0080 00).
3. Remove the engine hood (TM a. If resistance (40 to 43 Ohms)
10-3930-675-10). Locate the
is not as specified or solenoid
hydraulic pump cut-off valve
is shorted to ground, replace
hydraulic pump cut-off valve
rail above engine starter.
(611) (WP 0263 00).
Ohms. Check resistance of
wires 15813 and 15814 (WP
each pin to ground.
c. Notify
Sustainment
Maintenance
to
replace
damaged or open harness.
d. Replace ECU (790) (WP 0080
00).
0038 00-2