TM 10-3930-675-20-1
0038 00-2
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, Open or Short Circuit Failure - Continued
5. If voltage was not present in
step 3, check continuity
between connector X158 pin
13
and
solenoid
611
connector pin 1 and between
connector X158 pin 14 and
solenoid (611) connector pin
2.
a. If continuity is not present,
repair or replace connectors
(WP 0111 00).
b. If wiring harness must be
replaced, notify SRA.
6. Disconnect connector X158
located under driver’s seat.
7. Check continuity between
connector 611 pin 1 and pin 2
and between connector 611
pin 1 and pin 2 and chassis.
a. If continuity is present, repair
or replace connectors (WP
0111 00).
b. If wiring harness must be
replaced, notify SRA.
8. Check continuity between
ECU (790) connector 2 pin 6
and connector X158 pin 14
and between ECU (790)
connector 2 pin 10 and
connector X159 pin 1.
a. If continuity is not present,
repair or replace connectors
(WP 0111 00).
b. If wiring harness must be
replaced, notify SRA.
9. Check continuity between
connector X159 pin 1 and
connector X158 pin 13.
a. If continuity is not present,
repair or replace connectors
(WP 0111 00).
b. If wiring harness must be
replaced, notify SRA.
10.Enter
“DIAG
SERVO
12(13)” menu and check
PUMP
OFF
OUTPUT
voltage. Voltage should be
present with override switch
activated
more
than
2
seconds.
If voltage is not as specified,
replace ECU (790) (WP 0079
00).
