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 451 of 1275

TM 9-2350-311-20-1

ag. SLAVE START RECEPTACLE CIRCUIT (M109A2/

M109A3)

The slave start receptacle is located in the battery compartment. When a slave start cable is connected between the

slave start receptacles of two vehicles, one vehicle can power the other vehicle’s electrical system. With the MASTER

switch set to ON in the first vehicle and the MASTER switch set to SLAVE in the second vehicle, 24 Vdc is supplied to

the second vehicle’s master relay. This energizes the master relay circuit which supplies voltage throughout the vehicle’s

electrical system.

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