Suzuki Engine 2002 GRAND VITARA SQ420 Service Manual page 740

ENGINE AND EMISSION CONTROL SYSTEM (H25 ENGINE) 6E2-47
REMOVAL
1) Disconnect negative cable at battery.
2) Disconnect EGR valve coupler.
3) Remove EGR valve (1) and gasket from intake collector.
INSPECTION
1) Check resistance between following terminals of EGR valve
(1) in each pair.
If found faulty, replace EGR valve assembly.
EGR valve resistance
Terminals
A – B
C – B
F – E
D – E
B – valve body
E – valve body
2. Connector
2) Remove carbon from EGR valve (1) gas passage.
NOTE:
Do not use any sharp-edged tool to remove carbon.
Be careful not to damage or bend EGR valve, 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.
INSTALLATION
Reverse removal procedure noting following.
• Clean mating surface of valve and intake manifold.
• Use new gasket.
Standard resistance
Ω
20 – 24 at 20°C, 68F
∞
Infinity ( )