Toyota Corolla Cross: Lost Communication with Drive Motor Control Module "A" (ch4) Missing Message (U117E87)
DESCRIPTION
The hybrid vehicle control ECU transmits and receives signals via CAN communication to and from the inverter with converter assembly (MG ECU).
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DTC No. | Detection Item |
DTC Detection Condition |
Trouble Area | MIL |
Warning Indicate | Note |
|---|---|---|---|---|---|---|
|
U117E87 | Lost Communication with Drive Motor Control Module "A" (ch4) Missing Message |
A CAN communication error between the MG ECU and hybrid vehicle control ECU (CAN communication system malfunction) occurs (1 trip detection logic) |
CAN communication system |
Comes on | Master Warning: Comes on |
SAE Code: U117E |
MONITOR DESCRIPTION
If the hybrid vehicle control ECU detects a problem with CAN communication with the motor generator control ECU, it will illuminate the MIL and store a DTC.
MONITOR STRATEGY
|
Related DTCs | U117E (INF U117E87): Lost Communication with Drive Motor Control Module "A" (ch4) verify communication |
|
Required sensors/components |
Main: Hybrid vehicle control ECU Sub: CAN bus line |
|
Frequency of operation |
Continuous |
|
Duration | TMC's intellectual property |
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MIL operation | Immediately |
|
Sequence of operation |
None |
TYPICAL ENABLING CONDITIONS
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The monitor will run whenever the following DTCs are not stored |
TMC's intellectual property |
|
Other conditions belong to TMC's intellectual property |
- |
TYPICAL MALFUNCTION THRESHOLDS
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The monitor will run whenever the following DTCs are not stored |
TMC's intellectual property |
|
Other conditions belong to TMC's intellectual property |
- |
COMPONENT OPERATING RANGE
|
Hybrid vehicle control ECU |
U117E (INF U117E87) is not detected |
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 .gif)
- 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 to ON and wait for 2 minutes or more. [*1]
HINT:
[*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 / Hybrid Control / Utility / All Readiness.
- Check the DTC judgment result.
HINT:
- 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.
PROCEDURE
|
1. | CHECK DTC OUTPUT |
(a) Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes| NEXT | .gif) | GO TO INVERTER LOW-VOLTAGE CIRCUIT |
