EGR Control Solenoid: Testing and Inspection

EGR Control Solenoid Schematic:

A faulty EGR control solenoid will set code 34 in the on-board diagnostic system. On California vehicles only, code 56 will set if the EGR valve becomes stuck either open or closed. Refer to the schematic diagram and test the solenoid with the diagnostic chart.

Wire color code identification:

L: Blue
B: Black
Y: Yellow
G: Green
R: Red
W: White
Br: Brown
Lg: Light green
Gr: Gray

EGR Control Solenoid Diagnostic Chart (a):

EGR Control Solenoid Diagnostic Chart (b):

EGR CONTROL SOLENOID DIAGNOSTIC CHART