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 204 of 704

TB 9-3950-253-13&P

Change 1

0019-24

0019

ELECTRICAL SYSTEM – CONTINUED

22. NO HOOK LIFT FUNCTION (ERROR CODE C0) – CONTINUED.

Step 5.

Fully extend hook arm and middle frame (PLS: TM 9-2320-364-14&P, HEMTT: TM 9-2320-326-

14&P).

a.

If hook arm and middle frame do not operate correctly, refer to vehicle TM (PLS: TM 9-

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

b.

If hook arm and middle frame operate correctly, return hook arm to home position and pro-

ceed to Step 6.

Step 6.

Set ignition switch and battery disconnect switch to OFF position.

Step 7.

Disconnect vehicle wiring harness from vehicle control box (WP 0029).

Step 8.

Connect vehicle wiring harness to stowage interface loom, and connect stowage interface loom

to vehicle control box (WP 0029).

Step 9.

Check middle frame sensor plate for correct position (WP 0034).

Set middle frame sensor plate to correct position (WP 0034).

Step 10.

Check middle frame sensor for illuminated LED when sensor plate is in correct position.

If LED is illuminated, replace middle frame sensor (WP 0034).

Step 11.

Check middle frame sensor for damage, loose connection or damaged wiring harness.

a.

Tighten or repair sensor mounting or connection.

b.

Replace harness if damaged.

Step 12.

Calibrate middle frame sensor (WP 0034).

If error code is still displayed, replace middle frame sensor (WP 0034).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

0.