TM 10-3930-675-20-1
0047 00-7
TOPHANDLER TWISTLOCKS AND FORKLIFT SENSOR TROUBLESHOOTING - CONTINUED
0047 00
Table 4. Error Code 243 - Tophandler Twistlock Locking Circuit Failure
Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 243 - Tophandler Twistlock Locking
Circuit Failure - Continued
3. Disconnect connector X189
from tophandler junction box
at end of boom. Place ignition
switch to ON position and
perform
voltage
check
between connector X189 pin
L and pin M.
a. If 20-25V is present, check
continuity between con-
nector X189 pin L and
connector 6040 pin 1 and
between connector X189
pin M and connector 6040
pin 2. Check continuity
between connector 6040
pin 1 and pin 2 and to
chassis. Check continuity
between connector X189
pin M and ECU (791)
connector 2 pin 16.
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 6 (16) menu and
check voltage of LOCKED
OUTPUT. Voltage should
be present with joystick
activated to lock/unlock
(press switch twice for lock
and unlock).
a. If voltage is not present,
replace ECU (791) (WP 0076
00).
b. If voltage is present, notify
SRA.