DESCRIPTION
The MG ECU, which is built into in the inverter with converter assembly, detects the temperature of the motor inverter using a temperature sensor built into the inverter with converter assembly. The inverter cooling system operates independently of the engine cooling system. The MG ECU uses signals from the motor inverter temperature sensor to check the effectiveness of the inverter cooling system. If necessary, the MG ECU will limit inverter output to help prevent inverter overheating. The MG ECU also detects malfunctions in the motor inverter temperature sensor and its wiring.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
---|---|---|---|---|---|
P0AEF-275 | Drive Motor Inverter Temperature Sensor "A" Circuit Low | Short to ground in the motor inverter temperature sensor circuit (1 trip detection logic) | Inverter with converter assembly | Comes on | Master Warning Light: Comes on |
P0AF0-274 | Drive Motor Inverter Temperature Sensor "A" Circuit High | Open or short to +B in motor inverter temperature sensor circuit (1 trip detection logic) | Inverter with converter assembly | Comes on | Master Warning Light: Comes on |
DTC No. | Data List |
---|---|
P0AEF-275 | Inverter Temp-(MG2) |
P0AF0-274 |
MONITOR DESCRIPTION
If the MG ECU detects a malfunction in the motor inverter temperature sensor circuit, it outputs a malfunction signal to the hybrid vehicle control ECU.
Upon receiving this signal, the hybrid vehicle control ECU will illuminate the MIL and store a DTC.
MONITOR STRATEGY
Related DTCs | P0AEF (INF 275): Drive Motor "A" Inverter Temperature malfunction (GND short) P0AF0 (INF 274): Drive Motor "A" Inverter Temperature malfunction (+B short and Disconnection) |
Required sensors/components | Motor inverter temperature sensor |
Frequency of operation | Continuous |
Duration | TMC's intellectual property |
MIL operation | 1 driving cycle |
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
Hybrid vehicle control ECU | DTC P0AEF (INF 275) is not detected DTC P0AF0 (INF 274) is not detected |
CONFIRMATION DRIVING PATTERN
HINT:
Check that there are no abnormalities (abnormal sounds, coolant leaks, DTC output, etc).
HINT:
CAUTION / NOTICE / HINT
HINT:
After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.
PROCEDURE
1. | REPLACE INVERTER WITH CONVERTER ASSEMBLY |
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NEXT | COMPLETED |