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Home >> Jeep >> 2004 >> Wrangler SE, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Powertrain Diagnostic Procedures >> DRIVEABILITY - Gas >> DTC P1490: Low Speed Fan Relay Control Circuit >> Possible Causes
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Possible Causes

  1. LOW SPEED RADIATOR FAN RELAY OPERATION
  2. LOW SPEED RADIATOR FAN RELAY
  3. (F20) FUSED IGNITION SWITCH OUTPUT CIRCUIT
  4. (A16) FUSED B+ CIRCUIT
  5. (C23) LOW SPEED RAD FAN RELAY CONTROL CIRCUIT OPEN
  6. (C23) LOW SPEED RAD FAN RELAY CONTROL CIRCUIT SHORT TO GROUND
  7. PCM