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Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Body Control Module (BCM) - DTCS B12AE-15 To U1702-87 >> DTC Troubleshooting >> U1419-09-HRLS (Humidity Solar Sensor)-Component Failures >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    1. With the scan tool, read Body Control Module (BCM) DTCs and record on the repair order.
    2. Record the Environmental Data.
    3. With the scan tool, erase DTCs.
    4. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
    5. With the scan tool, read BCM DTCs.

      Did the DTC return?

      Yes 

      • Go To  2

      No 

  2. CHECK FOR ADDITIONAL DTCS IN THE HVAC MODULE 
    1. With the scan tool, read HVAC Module DTCs.

      Are any Humidity, Light or Solar related DTCs set?

      Yes 

      No 

      • Go To  3
  3. CHECK THE POSITION OF THE HUMIDITY/SOLAR SENSOR 
    1. Turn the ignition off.
    2. Check the mounting position of the Humidity/Solar Sensor.

      Were any problems found?

      Yes 

      No 

      • Replace the Humidity/Solar Sensor in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .