U1550 – Auto lamp sensor fail, U1551 – Rain sensor fail MMC Colt



COMMENTS ON TROUBLE SYMPTOM

  • When the “auto lamp sensor malfunction” signal is contained in the signal from the rain light sensor, the ETACS-ECU stores the diagnosis code No. U1550.
  • When the “rain sensor malfunction” signal is contained in the signal from the rain light sensor, the ETACS-ECU stores the diagnosis code No. U1551.

  • PROBABLE CAUSES

  • Malfunction of the rain light sensor

  • DIAGNOSIS PROCEDURE

    Check whether the diagnosis code is reset.

    Q. Is the diagnosis code set?

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