TM 10-3930-675-24-1
TOPHANDLER TILT TROUBLESHOOTING - CONTINUED
0043 00
Table 3. Error Code 237 - Tophandler Tilt Locking Control,
Wiring Circuit Failure Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 237 - Tophandler Tilt Locking 1. Check wires and connectors at a. Repair or replace connectors
Control, Wiring Circuit Failure.
moderation and tilt control
(WP 0113 00).
valve mounted on the nose of b. Replace damaged wiring
the boom and tophandler
harness (WP 0222 00).
junction box for damage.
2. Enter DIAG ATTACHMENT
If no INPUT mA values display
15(16) in the diagnostic menu.
or values less than 600 mA,
Activate the tilt floatlock
continue with troubleshooting
function.
procedure.
DIAG ATTACHMENT 15(16)
3. Disconnect connector 6012-1 a. If no voltage (20 to 24V) is
ACTIVE OUTPUT/INPUT
OSC.
24.00V 900mA
and
6012-2
from
the
found, check continuity of
TILT
24.00V 900mA
tophandler
tilt
floatlock
wires BK and GY of the
solenoids. Turn the ignition
solenoid harnesses (WP 0048
ON and check voltage (20 to
00-26).
24V) between both pins of the b. If voltage (20 to 24V) is found,
connector.
Check
both
check resistance of 6012-1 and
connectors.
6012-2 solenoids. The top
mounted solenoid should be
25 to 35 Ohms and the front
mounted solenoid should be
35 to 45 Ohms.
c. If solenoid is open or shorted,
replace moderation and tilt
control valve (WP 0263 00).
d. Replace solenoid wiring
harness (WP 0222 00).
4. Remove the cover from the a. If no voltage (20 to 24V) is
tophandler junction box. Turn
found, check continuity of
the ignition ON. Check voltage
wires
A3018A
through
(20 to 24V) at X180 between
A3018J and A18014 (WP
pins 14 and 15.
0048 00-26).
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
wires or connectors (WP 0113
connector pins for damage.
00).
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
0043 00-3
