Chevrolet IMPALA 3.9L 2009, Руководство по установке системы CNG, Страница: 21 / 32

© 2009 IMPCO Technologies, Inc. -19- 2009 3.5/3.9L Impala CNG
1) Disconnect both connectors from the OEM
ECM. Layout the Sequent wiring harness
with all pigtails approximately where they
will be installed.
2) Carefully remove the wiring cover from the
back of the OEM ECM connectors X1 & X2.
3) Remove the harness tape and conduit to
expose the ECM connector wiring.
OEM ECM harness with modifications
completed and ready for retaping.
4) Locate both injector pigtails on the Sequent
P&D harness (labeled: Inj 1-2-3-4 BENZ
and Inj 5-6-7-8 BENZ ). Cut the connectors
off of both pigtails.
5) Cut the adhesive-lined shrink-wrap into 1 to
1 ¼” strips. Install one of the strips over the
first wire to be reworked.
6) Steps 6 through 9 should be done on the
wires one-at-a-time. Referring to the 2009
3.5L Impala P&D Installer’s Wiring
Diagram
, cut each wire at the ECM
indicated on the diagram. Strip the ends of
the wires in preparation for crimping and
soldering.
Important: Make sure to cut the wires so
there is adequate space between the splice
and the ECM connector to allow for repacking
the wires into the harness conduit.
7) Position the wire ends in one of the “U”
shaped crimps and securely crimp the wires
together (parallel splice illustrated).
8) Solder the connection.
9) Apply the shrink-wrap to the splice.
10) Repeat until all circuits have been
reworked.
NOTE: The OBD-II connections cannot be
made until the interior harness pigtail has been
installed.