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Home >> Jeep >> 2021 >> Grand Cherokee L Laredo, RWD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating & Air Conditioning (ATC) - DTCS B1E9C-11 To U1480-00 >> Diagnosis And Testing >> B1F1B-12-Rear Left Vent Control 1-Circuit Short To Battery >> Possible Causes

Possible Causes

Possible Causes
LIN BUS COMMUNICATION FAILURE
VENTED SEAT MOTOR FUSE
LEFT REAR SEAT VENT MOTOR CONTROL CIRCUIT SHORTED TO VOLTAGE
REAR VENT MOTOR FAULTY
COMFORT REAR SEAT MODULE (CRSM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .