The motor generator control ECU (MG ECU) located in the inverter with converter assembly detects the temperature of the boost converter using the temperature sensor built into the boost converter. The motor generator control ECU (MG ECU) detects malfunctions in the boost converter temperature sensor and its wiring.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | Note |
|---|---|---|---|---|---|---|
| P0C3811 | DC/DC Converter Temperature Sensor "A" Circuit Short to Ground | Short to ground detected in boost converter temperature sensor (upper) signal circuit
(1 trip detection logic) |
Inverter with converter assembly | Comes on | Master Warning:
Comes on |
SAE Code:
P0C3A |
| P0C3815 | DC/DC Converter Temperature Sensor "A" Circuit Short to Battery or Open | Open or short to +B detected in boost converter temperature sensor (upper) signal circuit
(1 trip detection logic) |
Inverter with converter assembly | Comes on | Master Warning:
Comes on |
SAE Code:
P0C3B |
| P0C3D11 | DC/DC Converter Temperature Sensor "B" Circuit Short to Ground | Short to ground detected in boost converter temperature sensor (lower) signal circuit
(1 trip detection logic) |
Inverter with converter assembly | Comes on | Master Warning:
Comes on |
SAE Code:
P0C3F |
| P0C3D15 | DC/DC Converter Temperature Sensor "B" Circuit Short to Battery or Open | Open or short to +B detected in boost converter temperature sensor (lower) signal circuit
(1 trip detection logic) |
Inverter with converter assembly | Comes on | Master Warning:
Comes on |
SAE Code:
P0C40 |
If the motor generator control ECU detects a malfunction in the boost converter temperature sensor circuit, the motor generator control ECU will illuminate the MIL and store a DTC.
| Related DTCs | P0C3A (INF P0C3811): DC/DC Converter Temperature Sensor "A" Range check
P0C3B (INF P0C3815): DC/DC Converter Temperature Sensor "A" Range check P0C3F (INF P0C3D11): DC/DC Converter Temperature Sensor "B" Range check P0C40 (INF P0C3D15): DC/DC Converter Temperature Sensor "B" Range check |
| Required sensors/components | DC/DC converter temperature sensor |
| 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 | - |
| Motor generator control ECU | DTC P0C3A (INF P0C3811) is not detected
DTC P0C3B (INF P0C3815) is not detected DTC P0C3F (INF P0C3D11) is not detected DTC P0C40 (INF P0C3D15) 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.
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 wait for 5 seconds 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 / Motor Generator / 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.
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