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 458 of 1275

TM 9-2350-311-20-1

3-3 TROUBLESHOOTING CHART — CONTINUED

ah. SLAVE START/EXTERNAL POWER

(1) NO POWER TO VEHICLE FROM SLAVE START

RECEPTACLE CIRCUIT (M109A4/M109A5) —

RECEPTACLE; SLAVED VEHICLE HAD POWER

CONTINUED

WHEN OPERATING

.

Multimeter (item 36, Appx H)

M109A4/M109A5

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

Tools

Equipment Conditions

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

Batteries disconnected (para 8-28)

1. Disconnect slave start cable from vehicle

being slaved.

2. Place red lead of multimeter on slave start

cable center contact and black lead to outer

contact.

3. Check for voltage.

Is voltage present?

I

I

Replace slave start cable or troubleshoot

slaving vehicles electrical system.

1. Reconnect slave start cable to vehicle to be

slaved. Slave start cable must be fully

seated in slave start receptacle.

2. Place red lead of multimeter on slave start

receptacle positive terminal (lead 49A) and

black lead on negative terminal (lead 50A).

3. Check for voltage.

Is voltage present?

CONTINUED ON NEXT PAGE

Applicable Configurations

Replace slave start receptacle

(para 8-28).

3-358