TM-5-2350-378-23-P

ARMORED COMBAT EARTHMOVER (ACE), M9; HYDRAULIC DIAGNOSTIC CENTER

TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST

JUNE 2012

TM-5-2350-378-23-P - Page 325 of 644

APPARENT HYDRAULIC DIAGNOSTIC CENTER (HDC) SYSTEM PROBLEM - Continued

STEP

15.

Check power cable W1 for short circuit from W1J1-A to connector W1J1 shell or other pins.

PARKING BRAKE

RELAY

B2 (PARTIALLY HIDDEN)

B1 (HIDDEN)

TERMINAL B1 (TOP)

POWER CABLE ASSEMBLY

W1 CONNECTION

(LABELED 1070)

FROM W1J1-A

T01916HDC

TERMINAL B2 (BOTTOM)

TO HDC CIRCUIT

BREAKER VIA LEAD

ASSEMBLY 12496958

(LABELED 1070)

1

A1

A3

A2

B1

B3

B2

X1

X2

Figure 16.

Parking Brake Relay Terminals.

CONDITION/INDICATION

Does a short circuit exist in power cable W1?

DECISION

YES - Replace power cable W1 (WP

0030).

NO - Check for loose or damaged terminals B1 and B2 on parking brake relay (Figure 16). Check terminals,

tighten wiring and replace parking brake relay if defective.

TM 5-2350-378-23&P

0021

0021-13