TM 10-3930-675-20-1
0044 00-8
TOPHANDLER LEVELING TROUBLESHOOTING - CONTINUED
0044 00
Table 6. Error Code 270 - Tophandler Leveling Left, Open Circuit Failure Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 270 - Tophandler Leveling Left,
Open Circuit Failure - Continued
a. If 20-25V is present, check
continuity between con-
nector X189 pin G and
connector 6036 pin 1;
between connector X189
pin H and connector 6036
pin
2;
and
between
connector X189 pin H and
ECU (791) connector 3 pin
13.
a. If continuity is not present,
repair or replace connectors
(WP 0111 00).
b. If wiring harness requires
replacement,
notify
DS
Maintenance.
b. If voltage is not present,
enter DIAG ATTACH-
MENT 14 (16) menu and
check
current
of
OSCILLATION,
LEFT
OUTPUT. Current should
be present with joystick
leveling right activated.
a. If current is not present,
replace ECU (791) (WP 0076
00).
b. If current is present, notify
SRA.
Table 7. Error Code 271 - Tophandler Leveling Left, Short Circuit Failure Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 271 - Tophandler Leveling Left,
Short Circuit Failure
1. Check wires and cables from
tophandler control valve to
boom for obvious damage.
Repair or replace damaged
connectors (WP 0111 00).
2. Disconnect
electrical
connector
6036
from
tophandler
leveling
left
solenoid.
Place
ignition
switch to ON position. Error
code 270 will be displayed.
Perform voltage check at pins
1 and 2.
If 20-25V is present at connector
6036, replace leveling left
solenoid (WP 0169 00).
DIAG TOP LIFT 12(16)
OUTPUT/INPUT
SLEW CW 0mA 0mA
SLEW CCW 0mA 0mA