TM-9-2320-283-20-1

TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1

TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 1 OF 3

DECEMBER 1983

TM-9-2320-283-20-1 - Page 293 of 926

TM 9-2320-283-20-1

TROUBLESHOOTING.

2-11.

TROUBLESHOOTING PROCEDURES (Continued).

MALFUNCTION

INSTRUCTION

INDICATION

YES

NO

54.

ONE REAR TURN SIGNAL LAMP NOT WORKING.

NOTE

• Blackout toggle switch must be set to NORMAL position and turn signal switch

set for right turn.

• Faulty right rear turn signal lamp is not shown in this procedure. Apply similar

troubleshooting technique for left rear turn signal lamp.

1.

Disconnect circuit

36C-DG from turn signal

switch, and go to step

2.

2.

Connect jumper from

circuit 35C-YL to

yellow circuit of turn

signal switch connec-

tor, and go to step 3.

3.

Check for voltage

12-volts dc

Connect cir-

Replace turn

at green circuit of

nominal.

cult 35C-YL

signal

turn signal switch

to turn sig-

switch (para

connector.

nal switch

3-80).

connector

and, go to

step 2.

4.

Disconnect circuit

36C-DG from 36D-DG at

connector, and go to

step 5.

5.

Check for voltage

12-volts dc

Connect cir-

Repair cir-

at circuit 36C-DG

nominal.

cuit 36C-DG

cult 36C-DG

terminal of connector.

to 36D-DG

(para 3-127),

and, go to

and connect

step 6.

circuit 36C-

DG to 36D-DG.

2-168