A/C Operation Is Not Possible

1. Turn the ignition switch OFF.
2. Disconnect A/C AUTO AMP. connector and AV and NAVI control unit connector.
3. Check continuity between A/C AUTO AMP. and AV and NAVI control unit.
   Fig 1: Checking Harness (1 Of 3)

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 2: Checking Harness (2 Of 3)

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check continuity between AV and NAVI control unit and ground.
   Fig 3: Checking Harness (3 Of 3)

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

OK or NG 

1. OK >> GO TO 2.
2. NG >>
   • Check harness for open or short between A/C AUTO AMP. and AV and NAVI control unit for open circuit.
   • Check connector housings for disconnected or loose terminals.

1. Connect A/C AUTO AMP. connector.
2. Turn the ignition switch ON.
3. Check voltage between AV and NAVI control unit terminal 43 and ground.
   Fig 4: Checking AV - A/C, AC - CLK Communication Signal (Terminal 43 And Ground - 1 Of 2)

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 5: Checking AV - A/C, AC - CLK Communication Signal (Terminal 43 And Ground - 2 Of 2)

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

OK or NG 

1. OK >> GO TO 3.
2. NG >> Replace A/C auto amplifier

1. Connect AV and NAVI control unit connector.
2. Turn the ignition switch ON.
3. Check voltage between AV and NAVI control unit terminals 43, 45 and ground.
   Fig 6: Checking AV-A/C, AC-CLK Communication Signal (Terminals 43,45 And Ground - 1 Of 2)

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 7: Checking AV-A/C, AC-CLK Communication Signal (Terminals 43,45 And Ground - 2 Of 2)

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

OK or NG 

1. OK >> Replace A/C auto amplifier
2. NG >> Replace AV and NAVI control unit