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Home >> Toyota >> 2017 >> Mirai >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System - Diagnostic Codes (1 Of 6) >> Hybrid Control System >> DTC P0A1B-168: Drive Motor "A" Control Module; DTC P0A1B-795: Drive Motor "A" Control Module; DTC P0A1B-796: Drive Motor "A" Control Module [06/2015 - ] >> Description
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DTC P0A1B-168: Drive Motor "A" Control Module; DTC P0A1B-795: Drive Motor "A" Control Module; DTC P0A1B-796: Drive Motor "A" Control Module [06/2015 - ]: Description

The MG ECU, which is built into the inverter with converter assembly, monitors its internal operation and detects malfunctions.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate
P0A1B-168 Drive Motor "A" Control Module Drive motor resolver angle malfunction:
The difference between the resolver angle for control and estimated resolver angle exceeds the allowable limit.
(1 trip detection logic)
  • Inverter with converter assembly
  • FCV transaxle with motor assembly
  • FC air compressor with motor assembly
  • Wire harness or connector
Master Warning Light:
Comes on
P0A1B-795 Drive Motor "A" Control Module Resolver REF signal cycle malfunction:
Excitation signal (REF signal) for resolver angle detection cycle malfunction
(1 trip detection logic)
  • Inverter with converter assembly
  • FCV transaxle with motor assembly
  • FC air compressor with motor assembly
  • Wire harness or connector
Master Warning Light:
Comes on
P0A1B-796 Drive Motor "A" Control Module Resolver REF signal oscillation stop malfunction:
An error is detected when the excitation signal (REF signal) for resolver angle detection is not detected.
(1 trip detection logic)
  • Inverter with converter assembly
  • FCV transaxle with motor assembly
  • FC air compressor with motor assembly
  • Wire harness or connector
Master Warning Light:
Comes on
RELATED DATA LIST

DTC No. Data List
P0A1B-168 Drive Motor Revolution
P0A1B-795
P0A1B-796