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DTC U0001:88/U0100:00/U0101:00/U0121:00/U0121:87/U0131:00/U0140:00/U0146:00/U0151:00/U0155:00 [START STOP UNIT]

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2016 – MX-5 – Body and Accessories

DTC U0001:88/U0100:00/U0101:00/U0121:00/U0121:87/U0131:00/U0140:00/U0146:00/U0151:00/U0155:00 [START STOP UNIT]

Description

  • U0001:88

    • Module communication error (HS-CAN)

  • U0100:00

    • Communication error with PCM

  • U0101:00

    • Communication error with TCM

  • U0121:00

    • Communication error with DSC HU/CM

  • U0121:87

    • Communication error with DSC HU/CM

  • U0131:00

    • Communication error with electric power steering (EPS) control module

  • U0140:00

    • Communication error with BCM

  • U0146:00

    • Communication error with BCM

  • U0151:00

    • Communication error with SAS control module

  • U0155:00

    • Communication error with instrument cluster

Detection condition

  • U0001:88

    • Start stop unit detects the CAN bus communication line (HS-CAN) malfunction 10 times continuously with the ignition switched ON (engine off or on).

  • U0100:00

    • Start stop unit could not receive the CAN signal from the PCM for 1 s or more with the ignition switched ON (engine off or on).

  • U0101:00

    • Start stop unit could not receive the CAN signal from the TCM for 1 s or more with the ignition switched ON (engine off or on).

  • U0121:00

    • Start stop unit could not receive the CAN signal from the DSC HU/CM for 1 s or more with the ignition switched ON (engine off or on).

  • U0121:87

    • Start stop unit could not receive the CAN signal from the DSC HU/CM for 10 s or more with the ignition switched off.

  • U0131:00

    • Start stop unit could not receive the CAN signal from the electric power steering (EPS) control module for 1.2 s or more with the ignition switched ON (engine off or on).

  • U0140:00

    • Start stop unit could not receive the CAN signal from the BCM for 5 s or more with the ignition switched ON (engine off or on).

  • U0146:00

    • Start stop unit could not receive the CAN signal from the BCM for 5 s or more with the ignition switched ON (engine off or on).

  • U0151:00

    • Start stop unit could not receive the CAN signal from the SAS control module for 1 s or more with the ignition switched ON (engine off or on).

  • U0155:00

    • Start stop unit could not receive the CAN signal from the instrument cluster for 5 s or more with the ignition switched ON (engine off or on).

Fail-safe

  • U0001:88

    • Sets to default signal.

  • U0100:00

    • Sets to default signal.

  • U0101:00

    • Sets to default signal.

  • U0121:00

    • Sets to default signal.

  • U0121:87

    • Sets to default signal.

  • U0131:00

    • Sets to default signal.

  • U0140:00

    • Sets to default signal.

  • U0146:00

    • Sets to default signal.

  • U0151:00

    • Sets to default signal.

  • U0155:00

    • Sets to default signal.

Possible cause

  • Malfunction in CAN bus communication line

  • Malfunction in CAN line between PCM and start stop unit

  • Malfunction in CAN line between TCM and start stop unit

  • Malfunction in CAN line between DSC HU/CM and start stop unit

  • Malfunction in CAN line between electric power steering (EPS) control module and start stop unit

  • Malfunction in CAN line between BCM and start stop unit

  • Malfunction in CAN line between SAS control module and start stop unit

  • Malfunction in CAN line between instrument cluster and start stop unit

System wiring diagram

Not applicable

Diagnostic Procedure

  • Perform the malfunction diagnosis according to the troubleshooting procedure for the multiplex communication system. (See FOREWORD.)

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