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Home >> Toyota >> 2012 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 115 (Hybrid Vehicle Control System (Diagnostic Codes (P0ADB-227 - U0424-537) & Circuit Tests)) (Hybrid)) >> Hybrid Control System >> DTC P0AF3-676: Sensor of Rear Motor Inverter Temperature; DTC P0AF6-675: Drive Motor Inverter Temperature Sensor "B" Circuit Intermittent / Erratic >> Description

DTC P0AF3-676: Sensor of Rear Motor Inverter Temperature; DTC P0AF6-675: Drive Motor Inverter Temperature Sensor "B" Circuit Intermittent / Erratic: Description

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The MG ECU located in the inverter with converter assembly detects the temperature of the rear motor inverter using the temperature sensor built into the rear motor inverter. If necessary, the MG ECU will limit inverter output to help prevent rear motor inverter overheating. The hybrid vehicle control ECU also detects malfunctions in the sensor based on the temperature sensor values. The inverter with converter assembly detects malfunctions in the rear motor inverter temperature sensor and its wiring.

DTC No. INF Code DTC Detection Condition Trouble Area
P0AF3 676 Temperature calculated by the hybrid vehicle control ECU and the actual temperature are different for 10 seconds or more.
  • Inverter cooling system
  • Cooling fan system
  • Inverter with converter assembly
  • Inverter water pump assembly (w/ motor)
P0AF6 675 Unusual sudden change in rear motor inverter temperature sensor output occurs and the offset continues, or an unusual sudden change in rear motor inverter temperature sensor output occurs repeatedly.