Checking Recirculation

Press recirculation (REC) switch one time. Recirculation indicator should illuminate.
Press fresh (FRE) switch one time. Fresh indicator should illuminate.
Listen for intake door position change (you should hear blower sound change slightly).

If NG, go to trouble diagnosis procedure for INTAKE DOOR MOTOR CIRCUIT .

If OK, continue with next check.

Fig 1: Checking Recirculation

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

NOTE: Confirm that the compressor clutch is engaged (sound or visual inspection) and intake door position is at FRESH when the DEF or D/F is selected.