TACHOMETER DOES NOT OPERATE OR IS INACCURATE (CONT)

TM 9-2320-366-20-1

e14. TACHOMETER DOES NOT OPERATE OR IS INACCURATE (CONT)

CAUTION

Read CAUTION

KNOWN INFO

TEST OPTIONS

on following page.

12.

Continuity Test or

Tachometer illuminates.

STE/ICE-R Test #91

VOLTS gage OK.

Is continuity present from

Engine speed sensor OK.

REASON FOR QUESTION

connector PX26 socket 6

POSSIBLE PROBLEMS

If continuity is not present,

to socket 4?

Faulty dashboard cable

wire 3083 from connector

assembly.

PX26 socket 6 to socket 4 is

faulty. If continuity is present,

wire 3083 from connector

PX26 socket 4 to connector

J31 pin 16 is faulty.

Repair wire 3083 from connector PX26

socket 6 to socket 4 (para 2-45) or replace

YES

WTEC II dashboard cable assembly (para

7-10) or WTEC III dashboard cable

assembly (para 7-11).

Repair wire 3083 from connector PX26 socket 4

to connector J31 pin 16 (para 2-45) or replace

WTEC II dashboard cable assembly (para 7-10)

or WTEC III dashboard cable assembly (para 7-11).

Change 1