TM-9-2320-272-24-2

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 2 OF 4

JUNE 1998

TM-9-2320-272-24-2 - Page 678 of 991

TM 9-2320-272-24-2

3-470. CTIS WIRING HARNESS REPLACEMENT (Contd)

b. Installation

CAUTION

Use care when routing CTIS wiring harness. Snagging may result,

and forceful pulling will cause damage to harness.

NOTE

l

Perform step 1 if grommet was removed.

l

Route CTIS wiring harness and install tiedown straps as noted

in removal.

1.

Install new grommet (14) on firewall (13).

2.

Insert wiring harness (7) through grommet (14) on firewall (13), and pull wiring harness (7) into

engine compartment.

3.

Route wiring harness (7) along frame rail (8), crossmember (6), and frame rail (2).

4.

Connect wiring harness connector (1) to speed signal generator wire (23) on transfer case (5).

5.

Connect wiring harness connector (4) to pressure switch wire (24) located above wet tank (3) at

right frame rail (2).

6.

Position clamp (28) on wiring harness (7) and install clamp (28) on bracket (25) with washer (27)

and screw (26).

7.

Position clamp (31) on wiring harness (7) and install clamp (31) on firewall (13) with washer (29)

and screw (30).

8.

Connect wiring harness connector (22) to pneumatic controller solenoid receptacle (21).

9.

Connect wiring harness connector (19) to pressure transducer (20).

10.

Connect wiring harness connector (15) to blackout wire (16).

11.

Connect wiring harness connector (18) to power and ground cable (17).

12.

Connect wiring harness connector (10) to amber warning light wire (11).

13.

Connect wiring harness connector (12) to ECU receptacle (9).

A

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