EGR BACKPRESSURE Transducer

Plug one port of EGR backpressure transducer (EGR-BPT) and apply vacuum to other port. See Fig 1 and Fig 2 . Vacuum should NOT hold. Apply light pressure to bottom port (DO NOT apply more pressure than is necessary to cause vacuum to hold). If vacuum does not hold with pressure applied, replace EGR-BPT valve.

Fig 1: Cross-Sectional View of EGR Backpressure Transducer

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: View of Backpressure EGR System (Typical)

Courtesy of NISSAN MOTOR CO., U.S.A.