What method is used on Toyota TCCS applications to monitor EGR flow?
A. A pressure sensor is used to monitor the exhaust pressure just before the EGR valve but after a restriction placed in the exhaust tube.
B. A pressure sensor is used to monitor intake manifold pressure while opening and closing the EGR valve during idle conditions.
C. A temperature sensor is placed into the EGR passage.
D. The oxygen sensor is monitored while opening and closing the EGR valve during idle conditions.
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