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Possible Causes

Possible Causes
HVAC WIRING HARNESS SHORT
HVAC OR LINKAGE FAILURE
2ND ROW BLEND/TEMPERATURE DOOR 4 BLOCKED OR OBSTRUCTED
ACTUATOR MECHANICAL FAILURE
PCB IS DAMAGED
HVAC MODULE

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

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