TM 10-3930-675-20-1
0041 00-8
BOOM IN/OUT TROUBLESHOOTING - CONTINUED
0041 00
Table 5. Error Code 163 - Extension Cylinder Boom OUT Control, Wiring Circuit Failure
Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 163 - Extension Cylinder Boom OUT
Control, Wiring Circuit Failure - Continued
b. Check continuity between
connector X159 pin 1 and
connector X158 pin 7.
If continuity is not present,
repair or replace connectors (WP
0111 00).
4. Perform voltage check at
connector block X154 pin 3.
a. If 20-25V is present, check
continuity between con-
nector X154 pin 3 and ECU
(790) connector 2 pin 9.
If continuity is not present,
repair or replace connectors (WP
0111 00).
b. If no voltage is present,
check continuity between
connector X154 pin 3 and
emergency stop switch 250
pin 2.
If continuity is not present,
repair or replace connectors (WP
0111 00).
5. Move operator’s cab to
transport position and remove
transmission
rear
access
cover (WP 0135 00).
6. Disconnect electrical con-
nector
from
boom
out
solenoid 6006 and perform
voltage check. If voltage is
not present, perform the
following continuity checks.
If 20-25V is present at connector
6006, replace boom out solenoid
(WP 0169 00).
Check continuity between
connector X158 pin 7 and
solenoid 6006 connector
pin
1
and
between
connector X158 pin 8 and
solenoid 6006 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.
7. Enter “DIAG SERVO 10
(13)” menu and check current
of OUTPUT BOOM OUT.
Current should be present
with joystick activated to
move boom out.
If current is not present, replace
ECU (790) (WP 0079 00).
