TM-9-2350-311-20-1

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS

AUGUST 1994

TM-9-2350-311-20-1 - Page 420 of 1275

TM9-2350-311 -20-1

3-3 TROUBLESHOOTING CHART — CONTINUED

ad. PARKING BRAKE WARNING LIGHT CIRCUIT —

PARKING BRAKE WARNING LIGHT FAILS TO OPERATE

CONTINUED

Tools

General mechanic’s tool kit (item 64, Appx H)

Multimeter (item 36, Appx H)

TA-1 probe kit (item 43, Appx H)

Personnel Required

.

Two

Equipment Conditions

. .

Engine compartment access door open

(TM9-2350-311-10)

Transmission access doors open (TM 9-2350-311-10)

Driver's instrument panel released (para 8-17)

A

1. Remove LED from PARKING BRAKE

warning light (para 8-17).

2. Place red lead of multimeter in center contact

and black lead to ground.

3. Turn MASTER switch ON, apply brake

pedal, and check for voltage.

4. Turn MASTER switch OFF.

Is voltage present?

I

I

Replace PARKING BRAKE warning

light bulb (para 8-17).

CONTINUED ON NEXT PAGE

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