TM 10-3930-675-20-1
0042 00-6
TOPHANDLER SLEWING TROUBLESHOOTING - CONTINUED
0042 00
Table 4. Error Code 256 - Tophandler Clockwise Slewing, Component Failure
Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 256 - Tophandler Clockwise
Slewing, Component Failure - Continued
4. Enter the DIAG ATTACH-
MENT 12 (16) menu and
check current of SLEW CW
OUTPUT. Current should be
present
with
joystick
activated to slew clockwise.
a. If current is not present,
replace ECU (791) (WP 0076
00).
b. If current is present, notify
SRA.
Table 5. Error Code 258 - Tophandler Counterclockwise Slewing, Wiring Circuit Failure
Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 258 - Tophandler Counterclockwise
Slewing, Wiring Circuit Failure
1. Check wires and cables from
tophandler control valve to
boom for obvious damage.
Repair or replace damaged wires
(WP 0111 00).
2. Disconnect
electrical
connector
6009
from
tophandler counterclockwise
slewing
solenoid.
Place
ignition
switch
to
ON
position and perform voltage
check.
If 20-25V is present at connector
6009, replace counterclockwise
slewing solenoid (WP 0169 00).
3. Disconnect connector X188
from tophandler junction box
at end of boom. Place ignition
switch to ON position and
perform
voltage
check
between connector X188 pin
C and pin D.
a. If 20-25V is present, check
continuity between con-
nector X188 pin C and
connector 6008 pin 1;
between connector X188
pin D and connector 6008
pin
2;
and
between
connector X188 pin D and
ECU (791) connector 3 pin
11.
a. If continuity is not present,
repair or replace connectors
(WP 0111 00).
b. If wiring harness requires
replacement,
notify
DS
Maintenance.
DIAG TOP LIFT 12(16)
OUTPUT/INPUT
SLEW CW 0mA 0mA
SLEW CCW 0mA 0mA
