TM-9-2350-277-20-1

CARRIER M113A3, M577A3, M1059A3, M1064A3, M1068A3 AND M58

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL VOLUME 1 OF 6

TM-9-2350-277-20-1 - Page 685 of 855

TM 9-2350-277-20-1

MSD/ICE TEST 25 FUEL RETURN PRESSURE DIAGNOSTIC

TROUBLESHOOTING — Continued

0144 00

Y

1.

Install jumper wire between harness 12354672 plug P1

(1), pins 3 (2) and 4 (3).

2.

Measure resistance between plug W1 P1 (4), pins

CC (5) and DD (6).

3.

Does MSD read 0 ohms?

YN

GO TO

CY

(PAGE 0144 00-7)

2Y

1.

Remove plug W1 P2 (1) fromMSD/ICE distribution

box jack J2 (2).

2.

Measure resistance between the following plug pins:

W1 P1 (3), pin BB (4) to W1 P2 (1), pin AB (5),

W1 P1 (3), pin f(6)toW1P2(1)

,pinf (7),

W1 P1 (3), pin g(8)toW1P2(1)

,ping (9).

3.

Does MSD read 0 ohms for each measurement?

2YN

1.

Faulty W1 cable. Beyond unit

maintenance repair.

2.

Notify supervisor.

014400-2

Change 5