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 206 of 704

TB 9-3950-253-13&P

Change 1

0019-26

0019

ELECTRICAL SYSTEM – CONTINUED

24. NO HOOK LIFT FUNCTION (ERROR CODE C2).

Step 1.

Check two rear twistlocks and two transport twistlocks for correct stowed position (WP 0005).

Correctly stow all twistlocks (WP 0005).

Step 2.

Check all four twistlock sensors for damage, loose connection, or damaged wiring harness.

a.

Tighten or repair sensor mounting or connection.

b.

Replace sensor or harness if damaged.

Step 3.

Calibrate twistlock sensors (WP 0034).

Step 4.

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

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

If any twistlock sensor LED does not illuminate when twistlock is correctly stowed, replace twist-

lock sensor (WP 0034).

25. UNABLE TO CALIBRATE (HEMTT ONLY) (ERROR CODE C4).

Step 1.

Check position of vehicle mode switch (TM 9-2320-326-14&P).

Set vehicle mode switch to AUTO position (TM 9-2320-326-14&P).

26. NO STOWAGE MODE (ERROR CODE D0).

Step 1.

Lower middle frame to fully down position (PLS: TM 9-2320-364-14&P, HEMTT: TM 9-2320-

326-14&P).

If error code is still displayed, refer to vehicle TM to diagnose middle frame down sensor (PLS:

TM 9-2320-364-14&P, HEMTT: TM 9-2320-326-14&P).

27. NO STOWAGE MODE (ERROR CODE D1).

Step 1.

Lower hook arm to home position (PLS: TM 9-2320-364-14&P, HEMTT: TM 9-2320-326-14&P).

If error code is still displayed, refer to vehicle TM to diagnose hook arm up sensor (PLS: TM 9-

2320-364-14&P, HEMTT: TM 9-2320-326-14&P).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

0.