Last Modified: 07-31-2024 |
6.11:8.1.0 |
Doc ID: RM1000000026JTO |
Model Year Start: 2023 |
Model: Corolla |
Prod Date Range: [09/2022 -
] |
Title: 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: U011187; Lost Communication with Hybrid/EV Battery Energy Control Module "A" Missing Message; 2023 - 2025 MY Corolla Corolla HV [09/2022 - ] |
DTC
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U011187
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Lost Communication with Hybrid/EV Battery Energy Control Module "A" Missing Message
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MONITOR DESCRIPTION
The ECM and battery energy control module send and receive signals via CAN communication.
If a communication error occurs between the ECM and battery energy control module, the ECM illuminates the MIL and stores this DTC.
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
MIL
|
Memory
|
Note
|
U011187
|
Lost Communication with Hybrid/EV Battery Energy Control Module "A" Missing Message
|
All of the following conditions are met for 50.6 seconds or more (1 trip detection logic):
-
Ignition switch ON
-
Auxiliary battery voltage is 10 V or higher
-
No communication between ECM and battery energy control module
|
-
CAN communication system
-
Battery energy control module
-
ECM
|
Comes on
|
DTC stored
|
-
SAE Code: U0111
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DTC for Mexico Models: Applies
|
MONITOR STRATEGY
Related DTCs
|
U0111: Lost communication with hybrid/EV battery energy control module
|
Required Sensors/Components (Main)
|
ECM
|
Required Sensors/Components (Related)
|
-
|
Frequency of Operation
|
Continuous
|
Duration
|
50.6 seconds or more
|
MIL Operation
|
Immediate
|
Sequence of Operation
|
None
|
TYPICAL ENABLING CONDITIONS
Monitor runs whenever the following DTCs are not stored
|
None
|
Both of the following conditions are met
|
-
|
Auxiliary battery Voltage
|
9.5 V or higher
|
Ignition switch
|
On
|
TYPICAL MALFUNCTION THRESHOLDS
Communication signal
|
Lost communication with battery energy control module
|
CONFIRMATION DRIVING PATTERN
HINT:
-
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
-
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here
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Connect the GTS to the DLC3.
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Turn the ignition switch to ON.
-
Turn the GTS on.
-
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
-
Turn the ignition switch off and wait for at least 30 seconds.
-
Turn the ignition switch to ON [A].
-
Turn the GTS on.
-
Wait 1 minute or more.
-
Enter the following menus: Powertrain / Engine / Trouble Codes [B].
-
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.
-
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
-
Input the DTC: U011187.
-
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
|
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.
|
GO TO CAN COMMUNICATION SYSTEM
|
Click here
NEXT |
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END
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