Toyota Yaris: Sfi System / Lost Communication with Stop and Start Control Module Missing Message (U110387)

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Engine & Hybrid System / G16e-gts (engine Control) / Sfi System / Lost Communication with Stop and Start Control Module Missing Message (U110387)

DESCRIPTION

The ECM and engine stop and start ECU send and receive signals via CAN communication.

If a communication error occurs between the ECM and engine stop and start ECU, the ECM stores this DTC.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Note

U110387

Lost Communication with Stop and Start Control Module Missing Message

All of the following conditions are met for 1.16 seconds or more (1 trip detection logic):

  • Ignition switch ON
  • Auxiliary battery voltage is 10 V or higher
  • No communication between ECM and engine stop and start ECU
  • CAN Communication System
  • ECM
  • Engine Stop and Start ECU

-

SAE: U1103

MONITOR STRATEGY

Frequency of Operation

Continuous

CONFIRMATION DRIVING PATTERN

  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON.
  3. Turn the GTS on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  5. Turn the ignition switch off and wait for at least 30 seconds.
  6. Turn the ignition switch to ON.
  7. Turn the GTS on.
  8. Wait 5 seconds or more.
  9. Enter the following menus: Powertrain / Engine / Trouble Codes.
  10. Read the DTCs.

    HINT:

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  11. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  12. Input the DTC: U110387.
  13. Check the DTC judgment result.

    GTS Display

    Description

    NORMAL

    • DTC judgment completed
    • System normal

    ABNORMAL

    • DTC judgment completed
    • System abnormal

    INCOMPLETE

    • DTC judgment not completed
    • Perform driving pattern after confirming DTC enabling conditions

    HINT:

    • If the judgment result shows NORMAL, the system is normal.
    • If the judgment result shows ABNORMAL, the system has a malfunction.

CAUTION / NOTICE / HINT

HINT:

Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

1.

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC U110387)

(a) Perform the Health Check using the GTS.

(b) Read the DTCs.

Result

Proceed to

U110387 is output

A

U110387 and other DTCs are output

B

HINT:

If any DTCs other than U110387 are output, troubleshoot those DTCs first.

A

GO TO CAN COMMUNICATION SYSTEM

B

GO TO DTC CHART

    Lost Communication with Brake System Control Module Missing Message (U012987)

    MONITOR DESCRIPTION The ECM and skid control ECU (brake actuator assembly) send and receive signals via CAN communication. If a communication error occurs between the ECM and skid control ECU (brake actuator assembly), the ECM stores this DTC...

    Turbocharger Oil Leak and White Smoke

    DESCRIPTION Type of Oil Leak Outline Major Trouble Area Internal oil leak (white smoke) Oil leak from the bearing housing into the compressor housing (intake side) or turbine housing (exhaust side) through the seal ring...

    Other information:

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Operation Check


    OPERATION CHECK CHECK CUSTOMIZE PARAMETERS NOTICE: The operation check below is based on the non-customized initial condition of the vehicle. Click here CHECK THE ENTRY UNLOCK FUNCTION (a) Check the entry unlock function (driver door, front passenger door)...

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: System Description


    SYSTEM DESCRIPTION FUNCTION OF SRS CONNECTORS (a) Location of activation prevention mechanism (b) Function of activation prevention mechanism (1) This mechanism is designed to create a short circuit automatically between the positive (+) and negative (-) terminals of a squib power source connector when disconnected...

    Categories

    Liftgate/Trunk Lid

    WARNING

    Never allow a person to ride in the luggage compartment/trunk

    Allowing a person to ride in the luggage compartment/trunk is dangerous. The person in the luggage compartment/trunk could be seriously injured or killed during sudden braking or a collision.

    Do not drive with the liftgate/trunk lid open

    read more

     
    Copyright © 2022 www.toyaris4.com