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Home >> Toyota >> 2016 >> Highlander Hybrid Limited >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (2GR-FXE) - Diagnostic Codes (3 Of 7) >> Hybrid Control System >> DTC P0AF3-676: Sensor of Rear Motor Inverter Temperature; DTC P0AF6-675: Drive Motor Inverter Temperature Sensor "B" Circuit Intermittent / Erratic [02/2014 - 11/2016] >> Description

DTC P0AF3-676: Sensor of Rear Motor Inverter Temperature; DTC P0AF6-675: Drive Motor Inverter Temperature Sensor "B" Circuit Intermittent / Erratic [02/2014 - 11/2016]: Description

The MG ECU, which is built into 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 the rear motor inverter from overheating. The power management 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. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0AF3-676 Sensor of Rear Motor Inverter Temperature Rear motor inverter temperature calculated by the power management control ECU is different from the actual temperature for 10 seconds or more, and the rear motor inverter temperature is excessively high.
(1 trip detection logic)
  • Inverter cooling system
  • Cooling fan system
  • Inverter with converter assembly
  • Wire harness or connector
Does not come on Master Warning Light:
Comes on
P0AF6-675 Drive Motor Inverter Temperature Sensor "B" Circuit Intermittent / Erratic Sudden change in rear motor inverter temperature sensor output or hunting:
Rear motor inverter temperature is high and either of the following conditions is met:
  1. Unusual sudden change in rear motor inverter temperature sensor output occurs and offset continues for a certain period of time.*
  2. Unusual sudden change in rear motor inverter temperature sensor output occurs repeatedly.*

(1 trip detection logic)
  • Inverter cooling system
  • Cooling fan system
  • Inverter with converter assembly
  • Wire harness or connector
Does not come on Master Warning Light:
Comes on

HINT: 

*: If only DTC P0AF6-675 is output, a temperature sensor malfunction is more likely to be the cause than a sudden change in actual temperature.

RELATED DATA LIST

DTC No. ECU Data List
P0AF3-676
  • Inverter Temp- (MG2)
  • Inverter Temp- (MG1)
  • Rear Inverter Temp
P0AF6-675