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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 >> B1F12-12-Rear Left Heater Control 2-Circuit Short To Battery >> Possible Causes

Possible Causes

Possible Causes
LEFT REAR SEAT BACK HEATER CONTROL CIRCUIT SHORTED TO VOLTAGE
LEFT REAR SEAT BACK HEATER CONTROL CIRCUIT SHORTED TO ANOTHER CIRCUIT
COMFORT REAR SEAT MODULE (CRSM)

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