215953
8
Revision A
1017623
A
Figure 1.16: Firewall Extension Module
•
Firewall extension module (A)
Two connectors: P235 and P236
Location: Behind the cab, near the header lift/fan manifold
To disconnect the connectors, insert the end of a a small
3
–
6 mm (1/8
–
1/4 in.) blade screwdriver into the connector
’
s
locking tab. Gently pry upward (no more than 6 mm
[1/4 in.]) to unlock the connector tab, and then pull the
connector away from the module.
1017624
A
Figure 1.17: Chassis Extension Module
•
Chassis extension module (A)
Two connectors: P247 and P248
Location: Under the cab, inside the left frame rail
To disconnect the connectors, insert the end of a small
3
–
6 mm (1/8
–
1/4 in.) blade screwdriver into the connector
’
s
locking tab. Gently pry upward (no more than 6 mm
[1/4 in.]) to unlock the connector tab, and then pull the
connector away from the module.
1019753
A
B
C
C
Figure 1.18: Engine Control Module
•
Engine Control Module (ECM)
Two connectors for Cummins: P100 (A) and J1 Cummins
Proprietary ECM Connector (B)
Location: On the engine
To disconnect the connectors, pull the rubber boot off of
the cover, unlock the latch, and undo the main over-center
latch. Remove strain relief bolts (C) so that the connectors
can be pulled away from the ECM.
IMPORTANT:
Be sure to disconnect both connectors. Note the connector
locations for reinstallation.
IMPORTANT:
Be sure to reconnect the connectors in the proper locations.
Do
NOT
cross connect the connectors.
