TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
3.
ENGINE HIGH IDLE DOES NOT OPERATE (MODEL A ONLY) (continued).
VOLTAGE TEST
(1) Remove four screws and lockwashers
and access cover from heater
compartment.
(2) Remove cab control box connector
(P2) from cab control box.
(3) Turn engine start switch to ON
position.
(4) Turn light control switch to STOP
LIGHT position.
(5) Set multimeter to voltage position.
ACCESS
(6) Place positive (+) probe of multimeter
COVER
on position "N" of cab control box
connector (J2).
(7) Place negative (-) probe of multimeter
on known good ground, and check
multimeter for voltage reading.
(8) Turn engine start switch and light
control switchs to OFF position.
CAB CONTROL BOX
CONNECTOR (J2)
CAB CONTROL BOX
CONNECTOR (P2)
Change 1
4-69
