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Home >> Jeep >> 2005 >> Wrangler X, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 627 (Powertrain Diagnostic Procedures - DRIVEABILITY - Gas - Symptom & Diagnostic Tests (DTCS P0031 To P1899)) >> DRIVEABILITY - Gas - Diagnostic Tests >> P1491-Cooling Fan Relay Control Circuit (Gas - Except NGC) >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2004 Dodge Pickup and 2004 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. GOOD TRIP EQUAL TO ZERO
  2. INTERNAL FUSED B+ CIRCUITS
  3. (Y145) CONDENSER FAN RELAY CONTROL CIRCUIT OPEN
  4. (Y145) CONDENSER FAN RELAY CONTROL CIRCUIT SHORTED TO GROUND
  5. CONDENSER FAN RELAY
  6. PCM
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