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Home >> Land Rover >> 2004 >> Freelander SE3 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Self-Diagnostics - With Codes >> DTC P1670: Output to cooling fan controller open circuit or short to ground. >> Possible Causes:
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Possible Causes:

  1. Connector MS43 ECM C331, Cooling fan controller unit C1680.
  2. Open circuit C331/4 (UW) - C1680/1 (UW).
  3. Short circuit C331/4 (UW) - Ground.
  4. Cooling fan controller unit.
  5. MS43 ECM.
  1. Connector MS43 ECM C331, Cooling fan controller unit C1680. 

    CONNECTOR

    Check for connector not correctly latched, backed out pins, damaged pins, corroded pins

  2. Open circuit C331/4 (UW) - C1680/1 (UW). 

    OPEN_CIRCUIT

    Check resistance > 1M&!

  3. Short circuit C331/4 (UW) - Ground. 

    SHORT_CIRCUIT

    Check resistance < 5.0&!

  4. Cooling fan controller unit. 

    No detail available for this fault

  5. MS43 ECM. 

    No detail available for this fault

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