Generator Resolver Circuit [12/2022 - ]: Procedure

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 repair information because this may cause a malfunction.

• Disconnect the inverter with converter assembly connector.
• Connect the cable to the negative (-) auxiliary battery terminal.
• Turn the ignition switch to ON.

• Measure the voltage according to the value(s) in the table below.

  Standard Voltage

  Tester Connection	Condition	Specified Condition	Result
  C54-3 (GRF) - Body ground	Ignition switch ON	Below 1 V	V
  C54-4 (GRFG) - Body ground	Ignition switch ON	Below 1 V	V
  C54-13 (GSN) - Body ground	Ignition switch ON	Below 1 V	V
  C54-12 (GSNG) - Body ground	Ignition switch ON	Below 1 V	V
  C54-19 (GCS) - Body ground	Ignition switch ON	Below 1 V	V
  C54-18 (GCSG) - Body ground	Ignition switch ON	Below 1 V	V

  NOTE:

  Turning the ignition switch to ON with the inverter with converter assembly disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

  Result

  Proceed to
  OK
  NG

Post-procedure1

• Turn the ignition switch off.
• Disconnect the cable from the negative (-) auxiliary battery terminal and wait for 2 minutes or more.
• Reconnect the inverter with converter assembly connector.

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

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 repair information because this may cause a malfunction.

• Disconnect the inverter with converter assembly connector.

• Measure the resistance according to the value(s) in the table below.

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  C54-3 (GRF) - C54-4 (GRFG)	Ignition switch off	8.9 to 14.9 Ω	Ω
  C54-13 (GSN) - C54-12 (GSNG)	Ignition switch off	16.2 to 28.2 Ω	Ω
  C54-19 (GCS) - C54-18 (GCSG)	Ignition switch off	18.1 to 30.1 Ω	Ω

  HINT: 

  To correct the variation of the measured resistance due to temperature, use the following formula to calculate the resistance at 20°C (68°F).

  R20 = Rt / {1 + 0.00393 X (T - 20)}

  The calculation is based on the following:

  R20: Resistance at 20°C (68°F) (mΩ)

  Rt: Measured resistance (mΩ)

  T: Temperature when the resistance is measured (°C (°F).)

  Standard Resistance (Check for Short)

  Tester Connection	Condition	Specified Condition	Result
  C54-3 (GRF) or C54-4 (GRFG) - Body ground and other terminals	Ignition switch off	1 MΩ or higher	MΩ
  C54-13 (GSN) or C54-12 (GSNG) - Body ground and other terminals	Ignition switch off	1 MΩ or higher	MΩ
  C54-19 (GCS) or C54-18 (GCSG) - Body ground and other terminals	Ignition switch off	1 MΩ or higher	MΩ
  C54-7 (DRN3) - Other terminals	Ignition switch off	1 MΩ or higher	MΩ

  Result

  Proceed to
  OK
  NG

Post-procedure1

• Reconnect the inverter with converter assembly connector.

Result: 

OK 

GENERATOR RESOLVER CIRCUIT NORMAL (PERFORM NEXT STEP FOR REFERENCED DTC) 

Result: 

NG 

See step  3

1. Check the connection condition of the resolver connector and the contact pressure of each terminal. Check the terminals for deformation, and check the connector for water ingress and foreign matter.

   HINT: 

   Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [12/2022 - ]

   OK

   - The connector is connected securely.

   - The terminals are not deformed and are connected securely.

   - No water or foreign matter in the connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Result

   Result	Proceed to
   OK	A
   NG (The connector is not connected securely.)	B
   NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.)	C

Result: 

B 

CONNECT SECURELY 

Result: 

C 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

A 

See step  4

Pre-procedure1

• Disconnect the resolver connector.

• Measure the resistance according to the value(s) in the table below.

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  C56-1 (GRF) - C56-8 (GRFG)	Ignition switch off	8.8 to 14.8 Ω	Ω
  C56-12 (GSN) - C56-2 (GSNG)	Ignition switch off	16.1 to 28.1 Ω	Ω
  C56-7 (GCS) - C56-11 (GCSG)	Ignition switch off	18.0 to 30.0 Ω	Ω

  HINT: 

  To correct the variation of the measured resistance due to temperature, use the following formula to calculate the resistance at 20°C (68°F).

  R20 = Rt / {1 + 0.00393 X (T - 20)}

  The calculation is based on the following:

  R20: Resistance at 20°C (68°F) (mΩ)

  Rt: Measured resistance (mΩ)

  T: Temperature when the resistance is measured (°C (°F).)

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  *a	Component without harness connected (Generator resolver (Hybrid Vehicle Transaxle Assembly))

  Standard Resistance (Check for Short)

  Tester Connection	Condition	Specified Condition	Result
  C56-1 (GRF) - Body ground and other terminals (except C56-8 (GRFG))	Ignition switch off	1 MΩ or higher	MΩ
  C56-8 (GRFG) - Body ground and other terminals (except C56-1 (GRF))	Ignition switch off	1 MΩ or higher	MΩ
  C56-12 (GSN) - Body ground and other terminals (except C56-2 (GSNG))	Ignition switch off	1 MΩ or higher	MΩ
  C56-2 (GSNG) - Body ground and other terminals (except C56-12 (GSN))	Ignition switch off	1 MΩ or higher	MΩ
  C56-7 (GCS) - Body ground and other terminals (except C56-11 (GCSG))	Ignition switch off	1 MΩ or higher	MΩ
  C56-11 (GCSG) - Body ground and other terminals (except C56-7 (GCS))	Ignition switch off	1 MΩ or higher	MΩ

  Result

  Proceed to
  OK
  NG

Post-procedure1

• Reconnect the resolver connector.

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

NG 

REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY 

Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]