TM-9-2320-272-23-2

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

TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 2 OF 5

SEPTEMBER 2012
TM-9-2320-272-23-2

  TM-9-2320-272-23-2 - Page 1239 of 1417

INSTALLATION
CAUTION
Use care when routing CTIS wiring harness. Snagging may result, and forceful pulling will
cause damage to harness.
NOTE
•
Perform Step (1) if grommet was removed.
•
Route CTIS wiring harness and install tiedown straps as noted in removal.
1.
Install grommet (Figure 2, Item 14) on firewall (Figure 2, Item 13).
2.
Insert wiring harness (Figure 2, Item 7) through grommet (Figure 2, Item 14) on firewall (Figure 2, Item 13),
and pull wiring harness into engine compartment.
3.
Route wiring harness (Figure 2, Item 7) along frame rail (Figure 2, Item 8), crossmember (Figure 2, Item 6),
and frame rail (Figure 2, Item 2).
4.
Connect wiring harness connector (Figure 2, Item 1) to speed signal generator wire (Figure 2, Item 23) on
transfer case (Figure 2, Item 5).
5.
Connect wiring harness connector (Figure 2, Item 4) to pressure switch wire (Figure 2, Item 24) located above
wet tank (Figure 2, Item 3) at right frame rail (Figure 2, Item 2).
6.
Position clamp (Figure 2, Item 28) on wiring harness (Figure 2, Item 7) and install clamp (Figure 2, Item 28)
on bracket (Figure 2, Item 25) with washer (Figure 2, Item 27) and screw (Figure 2, Item 26).
7.
Position clamp (Figure 2, Item 31) on wiring harness (Figure 2, Item 7) and install clamp (Figure 2, Item 31)
on firewall (Figure 2, Item 13) with washer (Figure 2, Item 29) and screw (Figure 2, Item 30).
8.
Connect wiring harness connector (Figure 2, Item 22) to pneumatic controller solenoid receptacle
(Figure
2,
Item 21).
9.
Connect wiring harness connector (Figure 2, Item 19) to pressure transducer (Figure 2, Item 20).
10.
Connect wiring harness connector (Figure 2, Item 15) to blackout wire (Figure 2, Item 16).
11.
Connect wiring harness connector (Figure 2, Item 18) to power and ground cable (Figure 2, Item 17).
12.
Connect wiring harness connector (Figure 2, Item 9) to amber warning light wire (Figure 2, Item 10).
13.
Connect wiring harness connector (Figure 2, Item 12) to ECU receptacle (Figure 2, Item 11).
TM 9-2320-272-23-2
0322
0322-4


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