Lexus ES: DC/DC Converter Temperature Sensor "A" Circuit Short to Ground (P0C3811,P0C3815,P0C3D11,P0C3D15)
DESCRIPTION
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 |
|---|---|---|---|---|---|
| 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 Light: Comes on |
| 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 Light: Comes on |
| 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 Light: Comes on |
| 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 Light: Comes on |
| DTC No. | Data List |
|---|---|
| P0C3811 | Boosting Converter Temperature (Upper) |
| P0C3815 | |
| P0C3D11 | Boosting Converter Temperature 1 (Lower) |
| P0C3D15 |
MONITOR DESCRIPTION
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.
MONITOR STRATEGY
| 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 |
TYPICAL ENABLING CONDITIONS
| 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
| TMC's intellectual property | - |
COMPONENT OPERATING RANGE
| 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 |
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.
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-
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
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- Connect the Techstream to the DLC3.
- Turn the power switch on (IG) and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for 2 minutes or more.
- Turn the power switch on (IG) and turn the Techstream on.
-
With power switch on (IG) and wait for 5 seconds 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 / Motor Generator / 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 or N/A, perform the normal judgment procedure again.
PROCEDURE
| 1. | REFER TO REPLACE INVERTER WITH CONVERTER ASSEMBLY PARTS |
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| NEXT | .gif) | COMPLETED |
READ NEXT:
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SEE MORE:
Parts Location
PARTS LOCATION ILLUSTRATION *1 OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) *2 OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR) *3 OUTER MIRROR (DRIVER DOOR) *4 OUTER MIRROR (FRONT PASSENGER DOOR) *5 INNER REAR VIEW MIRROR ASSEMBLY *6 OUTER MIRROR CONTROL ECU ASS
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Front Camera System DTC No. Detection Item Link C10001C Control Module Internal Temperature Sensor "A" Circuit Circuit Voltage Out of Range C10051C Control Module Internal Temperature Sensor "B" Circuit Circuit Voltage Out of Range C100A
