The battery ECU assembly transmits and receives signals via CAN communication to and from the ECM.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | Note |
|---|---|---|---|---|---|---|
| U010087 | Lost Communication with ECM/PCM "A" Missing Message | A CAN communication error between the battery ECU assembly and ECM (CAN communication system malfunction) occurs
(1 trip detection logic) |
CAN communication system | Comes on | Master Warning:
Comes on |
SAE Code: U0100 |
If the battery ECU assembly detects a problem with CAN communication with the ECU, it will illuminate the MIL and store a DTC.
| Related DTCs | U0100 (INF U010087): Lost communication with ECM/PCM |
| Required sensors/components | Battery ECU assembly |
| Frequency of operation | Continuous |
| Duration | TMC's intellectual property |
| MIL operation | Immediately |
| Sequence of operation | None |
| The monitor will run whenever the following DTCs are not stored | TMC's intellectual property |
| Other conditions belong to TMC's intellectual property | - |
| TMC's intellectual property | - |
| Battery ECU assembly | DTC U0100 (INF U010087) is not detected |
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.
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Connect the GTS to the DLC3.
Turn the ignition switch to ON and 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 2 minutes or more.
Turn the ignition switch to ON and turn the GTS on.
With ignition switch ON and wait for 2 minutes or more.[*1]
[*1]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
Check the DTC judgment result.
If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.
If the judgment result shows INCOMPLETE, perform the normal judgment procedure again.
Check for DTCs.
Turn the ignition switch off.
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