Grand Cherokee 2WD V8-4.7L VIN J (2004)
Test 1 - 3
Test 4
SYMPTOM
BLOWER MOTOR ALWAYS RUNS AT ONE SPEED ONLY (AZC)
POSSIBLE CAUSES
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Blower motor control CKT shorted to ground
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Blower motor control circuit shorted to blower motor high driver circuit
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AZC module, fan stuck on one speed only
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Blower motor controller
Blower Motor Inoperative (AZC)