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Home >> Infiniti >> 2012 >> G37 IPL, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (HVAC Control System (Sedan)) >> System Description >> Diagnosis System (Unified Meter&A/C Amp.) >> Without PLASMACLUSTER System >> WITHOUT PLASMACLUSTER SYSTEM: Diagnosis Description >> Operation Procedure
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Operation Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Start the engine (turn ignition switch ON).
    NOTE: When checking the procedure except step-4, it is possible to perform in the state of ignition switch ON.
  2. Press the OFF switch at 5 seconds or more (within 10 seconds after ignition switch is turned ON).
  3. Unified meter and A/C amp. self diagnosis mode starts.
  4. "Test item" are changed by the following operation.
    Test item Operation
    STEP-1 Indicator and display screen are checked. Former STEP-1 does not exist in this self-diagnosis function.
    STEP-2 Input signals from each sensor are checked. Turn temperature control dial (driver side) clockwise → STEP-3
    STEP-3 Mode and intake door motor positions are checked. Turn temperature control dial (driver side) clockwise → STEP-4
    Turn temperature control dial (driver side) counterclockwise → STEP-2
    STEP-4(1) Motors are checked. Turn temperature control dial (driver side) clockwise → STEP-5 (1)
    Turn temperature control dial (driver side) counterclockwise → STEP-3
    STEP-5 (1) Temperature detected by each sensor is checked. Turn temperature control dial (driver side) counterclockwise → STEP-4
    Press intake switch → STEP-5 (2)
    Press fan (UP:+) switch(2)
    Turn fan control dial clockwise(3) → AUXILIARY MECHANISM
    STEP-5 (2) Communication error. Turn temperature control dial (driver side) counterclockwise → STEP-4
    Press intake switch → STEP-5 (1)
    Press fan (UP:+) switch(2)
    Turn fan control dial clockwise(3) → AUXILIARY MECHANISM
    AUXILIARY MECHANISM Temperature setting trimmer. Press fan (DOWN:-) switch(2)
    Turn fan control dial counterclockwise(3) → STEP-5 (1)
    Foot position setting trimmer.
    Inlet port memory function.
    (1) Engine must be running for compressor to operate.
    (2) With left and right ventilation temperature separately control system.
    (3) Without left and right ventilation temperature separately control system.
  5. Self-diagnosis mode is canceled by either pressing AUTO switch or turning the ignition switch OFF.
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