TM 10-3930-675-24-1
TOPHANDLER TWISTLOCKS AND FORKLIFT SENSOR TROUBLESHOOTING - CONTINUED
0047 00
Table 7. Error Code 246 - Tophandler Twistlock Unlocking Circuit Failure Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 246 - Tophandler
Twistlock 1. Check wires and connectors at a. Repair or replace connectors
Unlocking Circuit Failure.
tophandler control valve and
(WP 0113 00).
tophandler junction box for b. Replace damaged wiring
damage.
harness (WP 0221 00).
2. Enter DIAG ATTACHMENT If no INPUT mA values display,
6(16) in the diagnostic menu. continue with troubleshooting
Activate the twistlock function procedure.
(override twistlocks).
DIAG ATTACHMENT 6(16)
3. Disconnect connector 6039 a. If no voltage (15 to 18V) is
TW-LOCK OUTPUT INPUT
from the tophandler twistlock
found, check continuity of
UNLOCKED 0.00V
0Ma
LOCKED
0.00V
0mA
unlocking solenoid. Turn the
wires 189J and 189K (WP
ignition ON and check voltage
0048 00-26).
(15 to 18V) between both pins b. If voltage (15 to 18V) is found,
of the connector.
check resistance of 6039
solenoid. Resistance should be
18 to 26 Ohms.
c. Replace open or faulty
solenoid (WP 0171 00).
d. Replace X189 to solenoids
wiring harness (WP 0221 00).
4. Disconnect connector X189 a. If no voltage (15 to 18V) is
from the tophandler junction
found, check continuity of
box. Turn the ignition ON.
wires
A3018A
through
Check voltage (15 to 18V) at
A3018E, and A189K (WP
the mounted part of the
connector between pins J and
28).
K.
b. Repair or replace damaged
wires or connectors (WP 0113
00).
5. Disconnect
ECU
(791) a. Repair or replace damaged
connector 2. Inspect ECU and
connector (WP 0113 00).
connector pins for damage.
b. Replace ECU (791) (WP 0077
00).
NOTE
Multiple error codes associated with a common connec-
tor on ECU (791) may be the result of a short to ground
in the harness for the common solenoid voltage. (See
0047 00-8
