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Heater & Air Condition > 2003-2012 Infiniti FX35 - FX45 - FX50 A/C Self Diagnostic Procedure

2003-2012 Infiniti FX35 - FX45 - FX50 A/C Self Diagnostic Procedure

Models:
  • 2003 Infiniti FX35 - FX45
  • 2004 Infiniti FX35 - FX45
  • 2005 Infiniti FX35 - FX45
  • 2006 Infiniti FX35 - FX45
  • 2007 Infiniti FX35 - FX45
  • 2008 Infiniti FX35 - FX45
  • 2009 Infiniti FX35 - FX50
  • 2010 Infiniti FX35 - FX50
  • 2011 Infiniti FX35 - FX50
  • 2012 Infiniti FX35 - FX50

Instructions

  • Step 1
    SET IN SELF-DIAGNOSIS MODE
  • a
    Turn ignition switch ON.
  • b
    Set in self-diagnosis mode as follows. Within 10 seconds after starting engine (ignition switch is turned ON.), press OFF switch for at least 5 seconds.
  • Step 2
    SENSOR CIRCUITS ARE CHECKED FOR OPEN OR SHORT CIRCUIT
  • 2003-2012 Infiniti FX35 - FX45 - FX50 A/C Self Diagnostic Procedure
  • Malfunctioning Sensor
  • 21 / -21
    Ambient sensor
  • 22 / -22
    In-vehicle sensor
  • 24 / -24
    Intake sensor
  • 25 / -25
    Sunload sensor (Ignore this code)
  • 26 / -26
    Air mix door motor PBR (Driver side)
  • 27 / -27
    Air mix door motor PBR (Passenger side)
  • Step 3
    MODE DOOR AND INTAKE DOOR POSITIONS ARE CHECKED
  • a
    Press temperature (UP) switch (driver side).
  • 2003-2012 Infiniti FX35 - FX45 - FX50 A/C Self Diagnostic Procedure
  • Malfunctioning Actuator
  • 31
    VENT
  • 32
    B/L
  • 33
    B/L
  • 34
    FOOT
  • 35
    D/F
  • 36
    DEF
  • 37
    FRE
  • 38
    20% FRE
  • 39
    REC
  • Step 4
    OPERATION OF EACH DOOR MOTOR IS CHECKED
  • a
    Press temperature (UP) switch (driver side).
  • 2003-2012 Infiniti FX35 - FX45 - FX50 A/C Self Diagnostic Procedure
  • b
    Press (DEF) switch. Code No. of each door motor test is indicated on the display.
  • 2003-2012 Infiniti FX35 - FX45 - FX50 A/C Self Diagnostic Procedure
  • Step 5
    TEMPERATURE OF EACH SENSOR IS CHECKED
  • a
    Press temperature (UP) switch (driver side).
  • b
    Code No. 51 appears on the display.
  • c
    Press (DEF) switch one time. Temperature detected by ambient sensor is indicated on the display.
  • 2003-2012 Infiniti FX35 - FX45 - FX50 A/C Self Diagnostic Procedure
  • Note:
  • If temperature shown on display greatly differs from actual temperature, check sensor circuit first, then inspect sensor.
  • c
    Press (DEF) switch a second time. Temperature detected by invehicle sensor is indicated on the display.
  • 2003-2012 Infiniti FX35 - FX45 - FX50 A/C Self Diagnostic Procedure
  • Note:
  • If temperature shown on display greatly differs from actual temperature, check sensor circuit first, then inspect sensor.
  • c
    Press (DEF) switch a third time. Temperature detected by intake sensor is indicated on the display.
  • 2003-2012 Infiniti FX35 - FX45 - FX50 A/C Self Diagnostic Procedure
  • Note:
  • If temperature shown on display greatly differs from actual temperature, check sensor circuit first, then inspect sensor.
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