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Home >> Jeep >> 2022 >> Grand Cherokee L Laredo, RWD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating & Air Conditioning (ATC) - DTCS B1F10-11 To B2107-16 >> DTC Troubleshooting >> B1F1B-14-Rear Left Vent Control 1-Circuit Short To Ground Or Open >> Possible Causes

Possible Causes

Possible Causes
LIN BUS COMMUNICATION FAILURE
VENTED SEAT MOTOR FUSE
GROUND CIRCUIT OPEN OR HIGH RESISTANCE
LEFT REAR SEAT VENT MOTOR CONTROL CIRCUIT OPEN
LEFT REAR SEAT VENT MOTOR CONTROL CIRCUIT SHORTED TO GROUND
REAR VENT MOTOR FAULTY
COMFORT REAR SEAT MODULE (CRSM)

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