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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 120 (Air Conditioning System Diagnosis (HEV)) >> DTC B1233: In-Car Temperature Sensor Short (Low) >> General Information >> Monitor Scantool Data

Monitor Scantool Data

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  1. Connect Scantool with diagnostic connector.
  2. Warm up the engine to normal engine temperature after engine starts.
  3. Select and monitor "In-Car Temperature Sensor 1" parameter.
    Fig 1: Screen Display - In-Car Temperature Sensor 1
    G10591057Courtesy of HYUNDAI MOTOR AMERICA

    (Fig.1) Parameter of "In-Car Temp.Sensor 1" will be fixed at 25°C (77°F) if there is any fault with the In-Car Sensor.

  4. Is the In-Car Temperature Sensor normal?

    YES 

    • This is a intermittent problem caused by poor contact of component or A/C Control Unit.
    • Thoroughly check the looseness, poor connection, bent, corrosion, contamination, deformation or damage of connector.
    • Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • Substitute with a known good In-Car Temp. Sensor and check for proper operation. If the problem is corrected, replace In-Car Temp. Sensor and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.