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Home >> Fiat >> 2021 >> 500X Trekking >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating & Air Conditioning - DTCS B1030-11 To B1912-11 >> DTC Troubleshooting >> B160F-15-Twilight/Ambient Light Sensor Input-Circuit Short To Battery Or Open >> Possible Causes

Possible Causes

Possible Causes
AUTO HEADLAMPS SIGNAL CIRCUIT SHORTED TO VOLTAGE
AUTO HEADLAMPS SIGNAL CIRCUIT OPEN
SUN SENSOR RETURN CIRCUIT OPEN
SUN SENSOR
HVAC MODULE

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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