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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 B11CB-15 To B1E9B-92 >> DTC Troubleshooting >> B11CB-15-Main Left Temperature Door 1 Control-Circuit Short To Battery Or Open >> Possible Causes

Possible Causes

Possible Causes
LEFT BLEND DOOR SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
LEFT BLEND DOOR SIGNAL CIRCUIT SHORTED TO ANOTHER CIRCUIT
SIGNAL RETURN CIRCUIT OPEN OR HIGH RESISTANCE
LEFT BLEND DOOR ACTUATOR
HVAC MODULE

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

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