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Home >> Infiniti >> 1993 >> Q45 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Emission Systems & Sub-Systems >> Exhaust Gas RECIRCULATION (EGR) >> EGR Backpressure Transducer

EGR Backpressure Transducer

  1. Remove vacuum and exhaust lines from EGR Backpressure Transducer (EGRC-BPT). Plug one upper vacuum port of transducer. Connect hand-held vacuum pump to remaining EGR vacuum port. Refer to Fig 1 . Apply vacuum. Vacuum should not hold. If vacuum holds, replace transducer.
  2. Blow into exhaust pressure port. Apply vacuum to EGR vacuum port again. Vacuum should hold only when air pressure is applied to transducer pressure port. If vacuum is not as specified, replace transducer.
Fig 1: Testing EGR Backpressure Transducer
G90G15228Courtesy of NISSAN MOTOR CO., U.S.A.
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