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Home >> Jeep >> 2003 >> Grand Cherokee 2WD V8-4.7L >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> Manufacturer Code Charts >> Heating & A/C System >> Driver Blend Door Not Responding (AZC) (Active)

Driver Blend Door Not Responding (AZC) (Active)

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Test 3 - 7:






SYMPTOM
DRIVER BLEND DOOR NOT RESPONDING (AZC) (ACTIVE)

WHEN MONITORED
Ignition in RUN and IOD fuse installed.

SET CONDITION
This condition is set if the AZC does not receive feedback pulses within 5 seconds of the drive voltage being applied.

POSSIBLE CAUSES
- Driver circuit (B) shorted to ground
- Driver circuit (A) shorted to ground
- Driver circuits (A) and (B) shorted together
- AZC module driver blend door not responding
- Driver circuit (A) open
- Driver circuit (B) open
- Driver blend door motor