HYBRID CONTROL SYSTEM, Diagnostic DTC:P0AEF-275 and P0AF0-274

DTC Code DTC Name
P0AEF-275 Drive Motor Inverter Temperature Sensor "A" Circuit Low
P0AF0-274 Drive Motor Inverter Temperature Sensor "A" Circuit High

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
Table 1. Related Data List

DTC No.

Data List

P0AEF-275

Inverter Temp-(MG2)

P0AF0-274

CAUTION / NOTICE / HINT

Tip:

After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.

  1. Turn the power switch on (IG) and wait for 5 seconds or more.

PROCEDURE

  1. REPLACE INVERTER WITH CONVERTER ASSEMBLY

    Click here

    Result

    Proceed to

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    COMPLETED