Civic Sedan L4-1493cc 1.5L SOHC (D15B2) TBI (1989)
Catalytic Converter: Testing and Inspection
Fig. 41 Catalytic Converter (Exploded View Std)
If excessive exhaust system back-pressure is suspected or if tail-pipe emissions are high and all other systems check OK, remove the catalytic
converter from the car and make a visual check for plugging, melting or cracking of the ceramic grid inside. If any of the visible areas are
damaged, replace the catalytic converter.