PFI Chart A-7, Emission Control Test

This test checks operation of canister purge valve, AIR valve mode and switches, EGR valve and control solenoid. This test provides a quick analysis of component operation.

Fig 1: PFI Chart A-7, Schematic, Emission Control Test

Courtesy of GENERAL MOTORS CORP.

Fig 2: PFI Flow Chart A-7, Emission Control Test

Courtesy of GENERAL MOTORS CORP.

Fig 3: PFI Flow Chart A-7