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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 B1052-4B To B1059-77 >> DTC Troubleshooting >> B1059-77-3RD Row Mode Door 1 Control-Commanded Position Not Reachable >> Possible Causes

Possible Causes

Possible Causes
HVAC WIRING HARNESS SHORT
HVAC OR LINKAGE FAILURE
3RD ROW MODE DOOR 1 BLOCKED OR OBSTRUCTED
ACTUATOR MECHANICAL FAILURE
HVAC MODULE

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

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