EGR Valve: Testing and Inspection
EGR Valve InspectionReference: EGR Valve Removal and Installation
1. Check resistance between the following terminals of EGR valve (1) in each pair. If found faulty, replace EGR valve assembly.
EGR valve resistance
A B terminal: 20 - 24 Ohms at 20 degrees C, 68 degrees F
C - B terminal: 20 - 24 Ohms at 20 degrees C, 68 degrees F
F - E terminal: 20 - 24 Ohms at 20 degrees C, 68 degrees F
D - E terminal: 20 - 24 Ohms at 20 degrees C, 68 degrees F
B terminal - valve body: Infinity
E terminal - valve body: Infinity
2. Remove carbon from EGR valve gas passage.
CAUTION: Do not use any sharp-edged tool to remove carbon. Be careful not to damage or bend EGR valve (1), valve seat (3) and rod.
3. Inspect valve (2), valve seat and rod for fault, cracks, bend or other damage.
If found faulty, replace EGR valve assembly.