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Home >> Nissan-Datsun >> 2003 >> Sentra SE-R, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 403 (Engine Control System) >> DTC P1480: Cooling Fan Speed Control Solenoid Valve >> Diagnostic Procedure >> 3. Check Cooling Fan Speed Control Solenoid Valve Output Signal Circuit For Open And Short

3. Check Cooling Fan Speed Control Solenoid Valve Output Signal Circuit For Open And Short

WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check harness continuity between ECM terminal 28 and cooling fan speed control solenoid valve terminal 2.

    Refer to WIRING DIAGRAM .

    Continuity should exist. 

  2. Also check harness for short to ground and short to power.

OK or NG 

  1. OK: GO TO 4.
  2. NG: Repair open circuit or short to ground and short to power in harness or connectors.
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