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Home >> Infiniti >> 2004 >> QX56 AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Compass & Thermometer >> Compass And Thermometer >> Trouble Diagnoses >> Preliminary Check For Thermometer

Preliminary Check For Thermometer

  1. COOL DOWN CHECK 
    1. Turn the ignition switch to the ON position.
    2. Cool down the ambient sensor with water or ice.

    Does the indicated temperature drop?

    1. Yes: GO TO 2.
    2. No: The system is malfunctioning. Refer to INSPECTION/COMPASS AND THERMOMETER 
  2. WARM UP CHECK 
    1. Leave the vehicle for 10 minutes.
    2. With the ignition switch in the ON position, disconnect and reconnect the ambient sensor connector.

    Does the indicated temperature rise?

    1. Yes: The system is OK.
    2. No: The system is malfunctioning. Refer to INSPECTION/COMPASS AND THERMOMETER  .
    NOTE:
    • The indicated temperature on the thermometer is not readily affected by engine heat. It changes only when one of the following conditions is present.
    • The temperature detected by the ambient sensor is lower than the indicated temperature on the thermometer.
    • The vehicle speed is greater than 20 km/h (13 MPH).

      (This is to prevent the indicated temperature from being affected by engine heat during low-speed driving.)

    • The ignition switch has been turned to the OFF position for more than 2 hours. (The engine is cold.)
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