TB-9-3950-253-13-P

PALLETIZED LOAD SYSTEM TRUCK, M1075 and M1075A1 (PLS) AND HEAVY EXPANDED MOBILITY TACTICAL TRUCK, M1120, M1120A2, AND M1120A4 (HEMTT), ENHANCED CONTAINER HANDLING UNIT (E-CHU)

TECHNICAL BULLETIN; OPERATOR AND FIELD MAINTENANCE, INSTALLATION INSTRUCTIONS, AND REPAIR PARTS AND SPECIAL TOOLS LIST

JULY 2009

TB-9-3950-253-13-P - Page 184 of 704

TB 9-3950-253-13&P

Change 1

0019-4

0019

ELECTRICAL SYSTEM – CONTINUED

2. NO STOWAGE FUNCTION (ERROR CODE 2).

Step 1.

Set ignition switch and battery disconnect switch to OFF position (PLS: TM 9-2320-364-14&P,

HEMTT: TM 9-2320-326-14&P).

Step 2.

Check 15 amp fuse in relay box.

NOTE

When ignition switch is turned on after battery disconnect switch has been turned off and

back on, error codes 1 and 24 may alternately display for one minute. This error code

indicates that temporary settings were lost while battery disconnect switch was off, and is

consistent with normal operation.

a.

Replace 15 amp fuse in relay box and set battery disconnect switch and ignition switch to

ON position.

b.

If error code is still displayed, continue to Step 3.

Step 3.

Check valve.

a.

Set ignition switch and battery disconnect switch to OFF position.

b.

Disconnect stow harness from valve (WP 0026).

c.

Set battery disconnect switch and ignition switch to ON position.

d.

If error code is not displayed, replace valve (WP 0026).

e.

If error code is still displayed, proceed to Step 4.

Step 4.

Check stow harness for shorted circuit.

a.

Set battery disconnect switch and ignition switch to OFF position

b.

Disconnect wires from positions 1 and 2 on P9 in Space 4000 ST box.

c.

Set battery disconnect switch and ignition switch to ON position to reset power.

d.

If error code is still displayed, replace Space 4000 ST box (WP 0029).

e.

If error code is not displayed, replace stow harness (WP 0029).

3. NO STOWAGE FUNCTION (ERROR CODE 5).

Step 1.

Set ignition switch and battery disconnect switch to OFF position (PLS: TM 9-2320-364-14&P,

HEMTT: TM 9-2320-326-14&P).

Step 2.

Check stowage angle sensor.

a.

Disconnect stowage angle sensor harness from stowage angle sensor (WP 0034).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

0.