Sequent Component Electrical Connections; Final Connections; Fuel Level Calibration - Chevrolet IMPALA 3.9L 2009 Cng System Installer Manual

N. Sequent Component Electrical Connections:
O. Final Connections:
P. Fuel Level Calibration:
©2009 IMPCO Technologies, Inc.
1) Connect the Sequent injector connectors.
Match the number on the injector wiring to
the CNG injector as illustrated.
Failure to follow this order will result in a rough
fuel change over and reduced performance on
CNG. Refer to the 2009 3.5L Impala P&D
Installer's Wiring Diagram for additional
information.
2) Connect the fuel temperature / pressure
sensor.
3) Connect the regulator temperature sensor.
4) Connect lockoff.
5) Connect the Sequent ECM.
1) Connect the high pressure CNG line to the
lockoff. Leak test the entire Sequent and
OEM fuel systems with applicable code
approved equipment before starting the
engine.
2) Reconnect all OEM components except for
the engine cover.
3) Reinstall the battery. If the installation
requires the Sequent B+ and B–
connections be made at the battery,
connect them now.
1) Perform the fuel level calibration as
described in the Sequent P&D Display
Software User Manual.
-23- 2009 3.5/3.9L Impala CNG