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 538 of 888

2-434

Change 2

TM 9-2320-280-20-1

349A

Is continuity present from pin h wire 349A

of J1 to pin 1 wire 359B of J1 to 2 wire

359J on engine harness connector to rpm

sensor?

Are 125 to 175 ohms present between

engine RPM sensor (located on engine

front cover), pins 1 and 2?

Replace engine rpm

sensor, (para. 4-33).

Replace engine rpm

sensor, (para. 4-33).

Repair wire

349A/349B, and/or

wire 359B/359J,

(para. 4-85).

YES

YES

NO

TRANSMISSION SYSTEM

DIAGNOSTIC FLOWCHART

(4L80-E)

ENGINE RPM SENSOR

NO