TM-9-2320-387-24-1

TRUCK, UTILITY: S250 SHELTER CARRIER, 4X4, M1113

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE, VOLUME 1

DECEMBER 1997

CHANGE 1

TM-9-2320-387-24-1 - Page 355 of 1205

TM 9-2320-387-24-l

GLOW PLUGS CIRCUIT

KNOWN INFO

OPEN CIRCUIT

IN GLOW

PLUG CONTROLLER

OR

WIRING

POSSIBLE

PROBLEMS

WIRING

GLOW PLUG

CONTROLLER

KNOWN INFO

3PEN CIRCUlT

IN GLOW

PLUG CONTROLLER

OR WIRING

POSSIBLE

PROBLEMS

WIRING

GLOW PLUG

CONTROLLER

IS THERE CONTINUITY

BETWEEN

PCB ENGINE CONNECTOR

HARNESS SOCKET B AND GLOW

PLUG CONTROLLER

HARNESS

CONNECTOR

SOCKET 3?

b

Page 2-298; 17, Page 2-224;

DIAGNOSTIC FLOWCHART

TEST OPTlONS

1. St-E/ICE-R TEST 91

(Page 2-508)

REASON

FOR QUESTION

This checks the return wire from

the glow plug controller to the

Protective

Control Box.

02

t

1 TEST OPTIONS

IS THERE CONTINUITY

BETWEEN

PCB ENGINE CONNECTOR

HARNESS

SOCKET A AND GLOW PLUG

CONTROLLER

HARNESS

CONNECTOR

SOCKET 6?

,y

REASON

FOR QUESTION

This checks the main power

wire from the PCB to the glow

plug controller.

1

r;

REPLACE GLOW PLUG

CONTROLLER.

DOES THE ENGINE

START EASILY WHEN COLD?

1.

91

(Page

2. MULTIMETER

T OPTlONS

TRY rr.

REASON FOR QUESTIONS

You verified that the wiring is OK

be bad.