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Home >> Land Rover >> 2003 >> Freelander S >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - With Codes >> DTC P1646: CAN link timeout to automatic gearbox ECU. >> Possible Causes:
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Possible Causes:

  1. Connector MS43 ECM C331, Auto gearbox ECU C932.
  2. Open circuit C331/36 (YB) - C932/33 (YB).
  3. Open circuit C331/37 (YN) - C932/12 (YN).
  4. Automatic gearbox ECU.
  5. MS43 ECM.
  1. Connector MS43 ECM C331, Auto gearbox ECU C932. 

    CONNECTOR

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

  2. Open circuit C331/36 (YB) - C932/33 (YB). 

    OPEN_CIRCUIT

    Check resistance > 1M&!

  3. Open circuit C331/37 (YN) - C932/12 (YN). 

    OPEN_CIRCUIT

    Check resistance > 1M&!

  4. Automatic gearbox ECU. 

    No detail available for this fault

  5. MS43 ECM. 

    No detail available for this fault

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