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Home >> Toyota >> 2019 >> Mirai >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Fuel Cell (FC) Boost Control System - Diagnostic Codes & Circuit Tests >> FC Boost Control System >> DTC P1D06-450: U Phase IPM Overcurrent; DTC P1D07-450: V Phase IPM Overcurrent; DTC P1D08-450: W Phase IPM Overcurrent; DTC P1D09-450: X Phase IPM Overcurrent [06/2015 - ] >> Description
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DTC P1D06-450: U Phase IPM Overcurrent; DTC P1D07-450: V Phase IPM Overcurrent; DTC P1D08-450: W Phase IPM Overcurrent; DTC P1D09-450: X Phase IPM Overcurrent [06/2015 - ]: Description

Refer to high voltage system diagram for the System Description.

Refer to SYSTEM DESCRIPTION [06/2015 - ]

If an overcurrent occurs in the FC converter assembly, the FC boost control ECU detects a malfunction.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate
P1D06-450 U Phase IPM Overcurrent U phase fail signal is detected. (Overcurrent)
(1 trip detection logic)
  • FC converter assembly
  • Inverter with converter assembly
  • FC air compressor with motor assembly
  • FCV transaxle with motor assembly
  • Inverter cooling system
  • Cooling fan system
  • Wire harness or connector
Master Warning Light: Comes on
P1D07-450 V Phase IPM Overcurrent V phase fail signal is detected. (Overcurrent)
(1 trip detection logic)
  • FC converter assembly
  • Inverter with converter assembly
  • FC air compressor with motor assembly
  • FCV transaxle with motor assembly
  • Inverter cooling system
  • Cooling fan system
  • Wire harness or connector
Master Warning Light: Comes on
P1D08-450 W Phase IPM Overcurrent W phase fail signal is detected. (Overcurrent)
(1 trip detection logic)
  • FC converter assembly
  • Inverter with converter assembly
  • FC air compressor with motor assembly
  • FCV transaxle with motor assembly
  • Inverter cooling system
  • Cooling fan system
  • Wire harness or connector
Master Warning Light: Comes on
P1D09-450 X Phase IPM Overcurrent X phase fail signal is detected. (Overcurrent)
(1 trip detection logic)
  • FC converter assembly
  • Inverter with converter assembly
  • FC air compressor with motor assembly
  • FCV transaxle with motor assembly
  • Inverter cooling system
  • Cooling fan system
  • Wire harness or connector
Master Warning Light: Comes on

HINT: 

If the inverter is malfunctioning, DTCs related to the inverter are also output to the EV control ECU.

RELATED DATA LIST

DTC No. Data List
P1D06-450
  • U Phase IPM Fail Signal
  • U Phase Reactor Current
P1D07-450
  • V Phase IPM Fail Signal
  • V Phase Reactor Current
P1D08-450
  • W Phase IPM Fail Signal
  • W Phase Reactor Current
P1D09-450
  • X Phase IPM Fail Signal
  • X Phase Reactor Current