Rear Motor Resolver Circuit [09/2023 - ]: 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 service information because this may cause a malfunction.

• Disconnect the EV motor control inverter assembly connector.

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

• Connect the cable to the negative (-) auxiliary battery terminal.
• Turn the ignition switch ON.

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

  Standard Voltage

  Tester Connection	Switch Condition	Specified Condition	Result
  J75-13 (RRF) - Body ground	Ignition switch ON	Below 1 V	V
  J75-3 (RRFG) - Body ground	Ignition switch ON	Below 1 V	V
  J75-19 (RSN) - Body ground	Ignition switch ON	Below 1 V	V
  J75-17 (RSNG) - Body ground	Ignition switch ON	Below 1 V	V
  J75-15 (RCS) - Body ground	Ignition switch ON	Below 1 V	V
  J75-11 (RCSG) - Body ground	Ignition switch ON	Below 1 V	V

  NOTE:

  Turning the ignition switch to ON (IG) with the low voltage connector of the EV motor control inverter 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.
• Reconnect the EV motor control inverter 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 service information because this may cause a malfunction.

• Disconnect the EV motor control inverter assembly connector.

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

  Standard Resistance (Check for Open)

  Tester Connection	Switch Condition	Specified Condition	Result
  J75-13 (RRF) - J75-3 (RRFG)	Ignition switch off	9.04 to 15.04 Ω	Ω
  J75-19 (RSN) - J75-17 (RSNG)	Ignition switch off	16.54 to 28.54 Ω	Ω
  J75-15 (RCS) - J75-11 (RCSG)	Ignition switch off	18.54 to 30.54 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	Switch Condition	Specified Condition	Result
  J75-13 (RRF) or J75-3 (RRFG) - Body ground and other terminals	Ignition switch off	1 MΩ or higher	MΩ
  J75-19 (RSN) or J75-17 (RSNG) - Body ground and other terminals	Ignition switch off	1 MΩ or higher	MΩ
  J75-15 (RCS) or J75-11 (RCSG) - Body ground and other terminals	Ignition switch off	1 MΩ or higher	MΩ
  J75-6 (DRN7) - Body ground and other terminals	Ignition switch off	1 MΩ or higher	MΩ

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  *a	Front view of wire harness connector (to EV Motor Control Inverter Assembly)

  Result

  Proceed to
  OK
  NG

Post-procedure1

• Reconnect the EV motor control inverter assembly connector.

Result: 

OK 

REAR MOTOR RESOLVER CIRCUIT NORMAL (PERFORM NEXT STEP FOR REFERENCED DTC) 

Result: 

NG 

See step  3

1. Check the connection condition of the rear motor 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 [09/2023 - ]

   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

• 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.

• Disconnect the rear motor resolver connector.

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

  Standard Resistance (Check for Open)

  Tester Connection	Switch Condition	Specified Condition	Result
  J70-4 (RRF) - J70-6 (RRFG)	Ignition switch off	9.0 to 15.0 Ω	Ω
  J70-3 (RSN) - J70-7 (RSNG)	Ignition switch off	16.5 to 28.5 Ω	Ω
  J70-2 (RCS) - J70-8 (RCSG)	Ignition switch off	18.5 to 30.5 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	Switch Condition	Specified Condition	Result
  J70-4 (RRF) - Body ground and other terminals (except J70-6 (RRFG))	Ignition switch off	1 MΩ or higher	MΩ
  J70-6 (RRFG) - Body ground and other terminals (except J70-4 (RRF))	Ignition switch off	1 MΩ or higher	MΩ
  J70-3 (RSN) - Body ground and other terminals (except J70-7 (RSNG))	Ignition switch off	1 MΩ or higher	MΩ
  J70-7 (RSNG) - Body ground and other terminals (except J70-3 (RSN))	Ignition switch off	1 MΩ or higher	MΩ
  J70-2 (RCS) - Body ground and other terminals (except J70-8 (RCSG))	Ignition switch off	1 MΩ or higher	MΩ
  J70-8 (RCSG) - Body ground and other terminals (except J70-2 (RCS))	Ignition switch off	1 MΩ or higher	MΩ

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  *a	Component without harness connected (Rear Motor Resolver (Rear Transaxle with Motor Assembly))

  Result

  Proceed to
  OK
  NG

Post-procedure1

• Reconnect the rear motor resolver connector.

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

NG 

REPLACE REAR TRANSAXLE WITH MOTOR ASSEMBLY. Refer to  REMOVAL [09/2023 - 12/2023]  , or refer to  REMOVAL [12/2023 - ]