DTC P1F67-11: Rear PCU Interlock Circuit Short to Ground [12/2023 - ]: Procedure

Pre-procedure1

• None.

• Check for DTCs.

  Powertrain > Rear Motor Generator > Trouble Codes 

  Result

  Result	Proceed to
  P1F67-11 only is output, or DTCs except the ones in the table below are also output.	A
  Any of the following DTCs are also output.	B

  Malfunction Content	System	Relevant DTC
  Microcomputer malfunction	Rear motor generator control system	P0A1C-29	Drive Motor B" Control Module Signal Invalid"
  		P0A1C-47	Drive Motor B" Control Module Watchdog / Safety MCU Failure"
  		P1C2C-1C	Drive Motor B" Control Module AD Converter Circuit Voltage Out of Range"
  Power source circuit malfunction	Rear motor generator control system	P06B3-1C	Drive Motor B" Control Module Position Sensor REF Power Source Circuit Voltage Out of Range
  		P19F9-1C	Drive Motor B" Control Module Offset Power Circuit Voltage Out of Range"

  HINT: 

  • P1F67-11 may be output as a result of the malfunction indicated by the DTCs above.
    1. The chart above is listed in inspection order of priority.
    2. Check DTCs that are output at the same time by following the listed order. (The main cause of the malfunction can be determined without performing unnecessary inspections.)

Post-procedure1

• Turn the ignition switch off.

Result: 

B 

GO TO DTC CHART (REAR MOTOR GENERATOR CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2023 - ] 

Result: 

A 

See step  2

Pre-procedure1

• Check that the service plug grip is not installed.
  NOTE:

  After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the service information because this may cause a malfunction.

• Check if the upper inverter cover sub-assembly of the rear inverter assembly is installed correctly.

  OK

  The inverter cover is installed correctly.

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None.

Result: 

NG 

INSTALL PARTS CORRECTLY 

Result: 

OK 

See step  3

Pre-procedure1

• Check that the service plug grip is not installed.
  NOTE:

  After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the service information because this may cause a malfunction.

• Remove the upper inverter cover sub-assembly from the rear inverter assembly.

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  HINT: 

  Refer to REMOVAL [12/2023 - ]

• Check the condition of the upper inverter cover sub-assembly interlock.

  OK

  Dirt or foreign matter has not entered the connectors and there is no evidence of contamination.

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  *1	Upper Inverter Cover Sub-assembly

  Result

  Proceed to
  OK
  NG

Post-procedure1

• Install the upper inverter cover sub-assembly.

Result: 

OK 

REPLACE EV MOTOR CONTROL INVERTER ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

Result: 

NG 

REPLACE UPPER INVERTER COVER SUB-ASSEMBLY. Refer to  REMOVAL [12/2023 - ]