TM-9-2320-280-20-1

TRUCK, UTILITY: M998 SERIES

TECHNICAL MANUAL; UNIT MAINTENANCE; VOLUME 1 OF 3

JANUARY 1996

TM-9-2320-280-20-1 - Page 386 of 888

TM 9-2320-280-20-1

KNOWN INFO

POSSIBLE PROBLEMS

TEST OPTIONS

REASON FOR QUESTION

KNOWN INFO

POSSIBLE PROBLEMS

TEST OPTIONS

REASON FOR QUESTION

NO

YES

NO

YES

2-292

Change 1

STARTER CIRCUIT

G4

G5

DISCONNECT WIRE 29A FROM

ROTARY SWITCH. IS THERE

CONTINUITY FROM WIRE 29A AT

ROTARY SWITCH TO SOCKET “B”

OF PCB/DISTRIBUTION BOX

BODY CONNECTOR HARNESS ?

RECONNECT PCB/DISTRIBUTION

BOX BODY CONNECTOR

HARNESS.

DO YOU HAVE BATTERY VOLTAGE

AT THE “R” TERMINAL OF THE

ROTARY SWITCH WITH THE

SWITCH IN “RUN” AND IN “START”?

NEUTRAL SAFETY

SWITCH OK

ROTARY SWITCH

PCB/DISTRIBUTION BOX

WIRING

NEUTRAL SAFETY

SWITCH OK

ROTARY SWITCH

PCB/DISTRIBUTION BOX

WIRING

FROM G3,

Page 2-290

REPAIR

WIRE 29A OR 29C

OR REPLACE

HARNESS

1. STE/ICE-R TEST 91

(Page 2-752)

2. MULTIMETER

If this wire doesn't carry battery

voltage to the PCB/distribution box,

the PCB/distribution box will not

send battery voltage to the starter

solenoid.

1. STE/ICE-R TEST 89

(Page 2-750)

2. MULTIMETER

If there isn't battery voltage at

the RUN terminal in both the

RUN and START positions, the

vehicle won't start.

REPLACE

ROTARY SWITCH

GO TO G6,

Page 2-294

DIAGNOSTIC FLOWCHART