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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 117 (Rear Motor Generator Control System - Diagnostic Codes) >> Rear Motor Generator Control System >> DTC P1C66-1F: Drive Motor "B" Control Module Circuit Intermittent; DTC P1CAE-49: Drive Motor "B" Position Sensor Internal Electronic Failure; DTC P1CB1-38: Drive Motor "B" Position Sensor REF Signal Frequency Incorrect [12/2019 - 11/2023] >> Description

DTC P1C66-1F: Drive Motor "B" Control Module Circuit Intermittent; DTC P1CAE-49: Drive Motor "B" Position Sensor Internal Electronic Failure; DTC P1CB1-38: Drive Motor "B" Position Sensor REF Signal Frequency Incorrect [12/2019 - 11/2023]: Description

WARNING: This page is about a different variant/trim than selected.

The motor generator control 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 MIL Warning Indicate
P1C66-1F Drive Motor "B" Control Module Circuit Intermittent Excitation signal (REF signal) for resolver angle detection cycle malfunction detected when DTC P0C79-17, P0D33-19, P1C5D-19, P1C5F-19 or P1C5E-19 is stored.
(1 trip detection logic)
  • Wire harness or connector
  • Rear traction motor with transaxle assembly
  • Hybrid vehicle transaxle assembly
  • Inverter with converter assembly
Does not come on Master Warning:
Does not come on
P1CAE-49 Drive Motor "B" Position Sensor Internal Electronic Failure Rear motor resolver angle malfunction: The difference between the resolver angle for control and estimated resolver angle exceeds the allowable limit.
(1 trip detection logic)
  • Wire harness or connector
  • Rear traction motor with transaxle assembly
  • Hybrid vehicle transaxle assembly
  • Inverter with converter assembly
Comes on Master Warning:
Comes on
P1CB1-38 Drive Motor "B" Position Sensor REF Signal Frequency Incorrect Rear motor resolver REF signal cycle malfunction: Excitation signal (REF signal) for resolver angle detection cycle malfunction.
(1 trip detection logic)
  • Wire harness or connector
  • Rear traction motor with transaxle assembly
  • Hybrid vehicle transaxle assembly
  • Inverter with converter assembly
Comes on Master Warning:
Comes on
RELATED DATA LIST

DTC No. Data List
P1CAE-49 Rear Motor Revolution
P1CB1-38