TM-9-2320-440-13-P

TERMINAL HIGH ALTITUDE AREA DEFENSE (THAAD) CARRIER

TECHNICAL MANUAL; OPERATOR’S AND FIELD LEVEL MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)

AUGUST 2010

TM-9-2320-440-13-P - Page 159 of 1616

TM 9-2320-440-13&P

0020-5

0020

GROUND ROD DRIVER DOES NOT OPERATE (CONTINUED)

THAAD0642

WARNING

Remove rings, wristwatches, neck chains, and any other jewelry before working

around vehicle.

Jewelry can catch on equipment and cause serious injury.

Jewelry

and tools may short across electrical circuits and cause damage to equipment or

severe burns or electrical shock to personnel.

NOTE

Due to system redundancy, the valve control signal is required from only one of the VIMs

for proper system operation.

The following steps check the valve control circuit from both

VIMs, to ensure system integrity.

Step 7.

Disconnect diode REC5. Turn engine start switch ON (

Check for

22 to 28 vdc between wires 1970A and 1970B at THAAD control valve harness

connector REC5, terminals 2 and 3 and a known good ground. Note readings.

a.

If 22 to 28 vdc are not present on both wires, go to Step 11.

b.

If 22 to 28 vdc are present on both wires, perform Step 8 only.

c.

If 22 to 28 vdc are present on one wire, perform Steps 8 through 10.

Step 8.

Turn engine start switch OFF (

Disconnect THAAD control valve

harness connector HV1-B2. Check for continuity across wire 1970 between connector

REC5, terminal 4 and connector HV1-B2, terminal 2.

a.

If there is continuity, replace diode REC5 (WP 0088).

b.

If there is no continuity, repair wire 1970 (TM 9-2320-325-14&P) or

replace THAAD control valve harness (WP 0088).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

TM 9-2320-347-10)

TM 9-2320-347-10)