Toyota Corolla Cross: 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.

CONFIRMATION DRIVING PATTERN

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

   HINT:

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

(a) Clear the DTCs.

(b) Turn the ignition switch off and wait for at least 30 seconds.

NEXT

(a) Enter the following menus.

(b) Read the DTCs using the GTS.

A

CHECK FOR INTERMITTENT PROBLEMS

B

GO TO CAN COMMUNICATION SYSTEM

READ NEXT: