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Home >> Jeep >> 2004 >> Wrangler SE, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Powertrain Diagnostic Procedures >> DRIVEABILITY - Gas >> DTC P1491: Cooling Fan Relay Control Circuit >> Possible Causes

Possible Causes

  1. COOLING FAN RELAY OPERATION
  2. FUSED B+ OUTPUT CIRCUIT
  3. GROUND CIRCUIT
  4. (K173) COOLING FAN RELAY CONTROL CIRCUIT OPEN
  5. (K173) COOLING FAN RELAY CONTROL CIRCUIT SHORTED TO GROUND
  6. PCM
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