Motor Resolver Circuit [11/2015 - 12/2018]: Procedure

CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - MOTOR RESOLVER)

WARNING:

Be sure to wear insulated gloves.

Check that the service plug grip is not installed.
NOTE:
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the service information because this may cause a malfunction.
Disconnect the C32 inverter with converter assembly connector.
Connect the cable to the negative (-) auxiliary battery terminal.
Turn the power switch on (IG).

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

Standard Voltage

(C32)

Tester Connection	Condition	Specified Condition
C32-5 (MRF) - Body ground	Power switch on (IG)	Below 1 V
C32-6 (MRFG) - Body ground	Power switch on (IG)	Below 1 V
C32-1 (MSN) - Body ground	Power switch on (IG)	Below 1 V
C32-2 (MSNG) - Body ground	Power switch on (IG)	Below 1 V
C32-4 (MCS) - Body ground	Power switch on (IG)	Below 1 V
C32-3 (MCSG) - Body ground	Power switch on (IG)	Below 1 V

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Front view of wire harness connector (to Inverter with Converter Assembly)

NOTE:

Turning the power switch on (IG) with the inverter with converter assembly disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal and wait for 2 minutes or more.

Reconnect the C32 inverter with converter assembly connector.

Result

Proceed to
OK
NG

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 2

CHECK MOTOR RESOLVER

WARNING:

Be sure to wear insulated gloves.

Check that the service plug grip is not installed.
NOTE:
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the service information because this may cause a malfunction.
Disconnect the C32 inverter with converter assembly connector.

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

Standard Resistance

(C32)

Tester Connection	Condition	Specified Condition
C32-5 (MRF) - C32-6 (MRFG)	Power switch off	8.9 to 14.9 Ω
C32-1 (MSN) - C32-2 (MSNG)	Power switch off	16.2 to 28.1 Ω
C32-4 (MCS) - C32-3 (MCSG)	Power switch off	18.2 to 30.1 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)

(C32)

Tester Connection	Condition	Specified Condition
C32-5 (MRF) or C32-6 (MRFG) - Body ground and other terminals	Power switch off	1 MΩ or higher
C32-1 (MSN) or C32-2 (MSNG) - Body ground and other terminals	Power switch off	1 MΩ or higher
C32-4 (MCS) or C32-3 (MCSG) - Body ground and other terminals	Power switch off	1 MΩ or higher
C32-7 (DRN3) - Other terminals	Power switch off	1 MΩ or higher

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Front view of wire harness connector (to Inverter with Converter Assembly)

Reconnect the C32 inverter with converter assembly connector.

Result

Proceed to
OK
NG

Result:

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

Result:

See step 3

CHECK CONNECTOR CONNECTION CONDITION (RESOLVER CONNECTOR)

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 [11/2015 - ]

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

- The connector is connected securely.

- The terminals are not deformed and are connected securely.

- No water or foreign matter in the connector.

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:

CONNECT SECURELY

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 4

INSPECT HYBRID VEHICLE TRANSAXLE ASSEMBLY (MOTOR RESOLVER)

Disconnect the C1 resolver connector.

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

*a	Component without harness connected (Motor Resolver (Hybrid Vehicle Transaxle Assembly))

Standard Resistance

(C1)

Tester Connection	Condition	Specified Condition
C1-6 (MRF) - C1-9 (MRFG)	Power switch off	8.8 to 14.8 Ω
C1-4 (MSN) - C1-5 (MSNG)	Power switch off	16.2 to 28.0 Ω
C1-10 (MCS) - C1-14 (MCSG)	Power switch off	18.1 to 30.0 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)

(C1)

Tester Connection	Condition	Specified Condition
C1-6 (MRF) - Body ground and other terminals (except C1-9 (MRFG))	Power switch off	1 MΩ or higher
C1-9 (MRFG) - Body ground and other terminals (except C1-6 (MRF))	Power switch off	1 MΩ or higher
C1-4 (MSN) - Body ground and other terminals (except C1-5 (MSNG))	Power switch off	1 MΩ or higher
C1-5 (MSNG) - Body ground and other terminals (except C1-4 (MSN))	Power switch off	1 MΩ or higher
C1-10 (MCS) - Body ground and other terminals (except C1-14 (MCSG))	Power switch off	1 MΩ or higher
C1-14 (MCSG) - Body ground and other terminals (except C1-10 (MCS))	Power switch off	1 MΩ or higher

Reconnect the C1 resolver connector.

Result

Proceed to
OK
NG

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY. Refer to REMOVAL [11/2015 - 12/2018]