DTC P0A78-113: Drive Motor "A" Inverter Performance: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
4. Check if DTCs are output.

   Result

   Result	Proceed to
   P0A78-113 is set before any of the DTCs in the table below are set.	A
   Any of the DTCs in the table below are set before P0A78-113 is set.	B

   DTC No.	Relevant Diagnosis
   P3011-123, P3012-123, P3013-123, P0314-123, P3015-123, P3016-123, P0317-123, P3018-123, P3019-123, P3020-123, P3021-123, P3022-123, P3023-123, P3024-123, P3025-123	Battery Block # Becomes Weak
   P0AFC-123	Hybrid Battery Pack Sensor Module
   P308A-123	Hybrid Battery Voltage Sensor All Circuits Low
   P0AC0-123	Hybrid Battery Pack Current Sensor Circuit Range/Performance
   P0AC1-123	Hybrid Battery Pack Current Sensor Circuit Low
   P0AC2-123	Hybrid Battery Pack Current Sensor Circuit High
   P0A9C-123	Hybrid Battery Temperature Sensor "A"
   P0A9D-123	Hybrid Battery Temperature Sensor "A" Circuit Low
   P0A9E-123	Hybrid Battery Temperature Sensor "A" Circuit High
   P0C6E-123	Hybrid Battery Temperature Sensor "A" / "B" Correlation
   P0AC6-123	Hybrid Battery Temperature Sensor "B" Range/Performance
   P0AC7-123	Hybrid Battery Temperature Sensor "B" Circuit Low
   P0AC8-123	Hybrid Battery Temperature Sensor "B" Circuit High
   P0ACB-123	Hybrid Battery Pack Cooling Fan 3 Performance or Stuck OFF
   P0ACC-123	Hybrid Battery Pack Cooling Fan 3 Stuck ON
   P0ACD-123	Hybrid Battery Pack Cooling Fan 3 Control Circuit Low
   P0C70-123	Hybrid Battery Temperature Sensor "C" / "D" Correlation
   P0AE9-123	Hybrid Battery Temperature Sensor "D" Range/Performance
   P0AEA-123	Hybrid Battery Temperature Sensor "D" Circuit Low
   P0AEB-123	Hybrid Battery Temperature Sensor "D" Circuit High
   P0BC3-123	Hybrid Battery Temperature Sensor "E" Range/Performance
   P0BC4-123	Hybrid Battery Temperature Sensor "E" Circuit Low
   P0BC5-123	Hybrid Battery Temperature Sensor "E" Circuit High
   P0C72-123	Hybrid Battery Temperature Sensor "E" / "F" Correlation
   P0C34-123	Hybrid Battery Temperature Sensor "F" Range/Performance
   P0C35-123	Hybrid Battery Temperature Sensor "F" Circuit Low
   P0C36-123	Hybrid Battery Temperature Sensor "F" Circuit High

   HINT: 

   P0A78-113 may be set due to a malfunction which also causes DTCs in the preceding table to be set. In this case, first troubleshoot the output DTCs in the preceding table. Then, perform a test to attempt to reproduce the problems, and check that no DTCs are output.

5. Turn the ignition switch off.

B → See step   31 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
4. Check if DTCs are output.

   Result

   Result	Proceed to
   P0A78-202 is not output.	A
   P0A78-202 is also output.	B

   NOTE:

   • If P0A78-202 is output, troubleshoot it first. After completing the troubleshooting for P0A78-202, return to perform troubleshooting for this DTC.
   • Parts repaired or replaced during troubleshooting for P0A78-202 do not need to be re-inspected in this diagnosis procedure.
5. Turn the ignition switch off.

B → See step   26 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
4. Check if DTCs are output.

   HINT: 

   • If P0A78-202 was not output in step 2 of this diagnosis procedure, check Table 1 below.
   • If P0A78-202 was output in step 2 of this diagnosis procedure, repair that DTC first, and then check Table 2 below.

   Result

   Result	Proceed to
   P0A78-113 only is output.	A
   Any of the following DTCs are also output.	B

   TABLE 1
   
   

   DTC No.	Relevant Diagnosis
   P0A1A (all INF codes)*1	Generator Control Module
   P0A1B (all INF codes)*1	Drive Motor "A" Control Module
   P0A1C (all INF codes)*1	Drive Motor "B" Control Module
   P0A1D (all INF codes)*1	Hybrid Powertrain Control Module
   P0A3F-243	Drive Motor "A" Position Sensor Circuit
   P0A40-500	Drive Motor "A" Position Sensor Circuit Range/Performance
   P0A41-245	Drive Motor "A" Position Sensor Circuit Low
   P0A45-669	Drive Motor "B" Position Sensor Circuit
   P0A46-671	Drive Motor "B" Position Sensor Circuit Range/Performance
   P0A47-670	Drive Motor "B" Position Sensor Circuit Low
   P0A4B-253	Generator Position Sensor Circuit
   P0A4C-513	Generator Position Sensor Circuit Range/Performance
   P0A4D-255	Generator Position Sensor Circuit Low
   P0A60 (all INF codes)*1	Drive Motor "A" Phase V Current
   P0A63 (all INF codes)*1	Drive Motor "A" Phase W Current
   P0A69 (all INF codes)*1	Drive Motor "B" Phase V Current
   P0A6C (all INF codes)*1	Drive Motor "B" Phase W Current
   P0A72 (all INF codes)*1	Generator Phase V Current
   P0A75 (all INF codes)*1	Generator Phase W Current
   P0A78-118, 119, 120, 266, 267, 279, 287, 306, 503, 504, 505, 506, 586, 806, 807, 808	Drive Motor "A" Inverter Performance
   P0A79-693, 694, 695, 704, 812, 813, 814	Drive Motor "B" Inverter Performance
   P0A7A-325, 344, 517, 518, 809, 810, 811	Generator Inverter Performance
   P0A90-509	Drive Motor "A" Performance
   P0A91-702	Drive Motor "B" Performance
   P0A92-521	Hybrid Generator Performance
   P0A94-124, 125, 126, 169, 170, 171, 442, 547, 548, 549, 554, 555, 556, 585, 587, 589, 590	DC/DC Converter Performance
   P0ADB-227	Hybrid Battery Positive Contactor Control Circuit Low
   P0ADC-226	Hybrid Battery Positive Contactor Control Circuit High
   P0ADF-229	Hybrid Battery Negative Contactor Control Circuit Low
   P0AE0-228	Hybrid Battery Negative Contactor Control Circuit High
   P0C76-523	Hybrid Battery System Discharge Time Too Long
   P3004-803	High Voltage Power Resource

   TABLE 2
   
   

   DTC No.	Relevant Diagnosis
   P0A1A (all INF codes)*1	Generator Control Module
   P0A1B (all INF codes)*1	Drive Motor "A" Control Module
   P0A1C (all INF codes)*1	Drive Motor "B" Control Module
   P0A1D (all INF codes)*1	Hybrid Powertrain Control Module
   P0A3F-243	Drive Motor "A" Position Sensor Circuit
   P0A40-500	Drive Motor "A" Position Sensor Circuit Range/Performance
   P0A41-245	Drive Motor "A" Position Sensor Circuit Low
   P0A45-669	Drive Motor "B" Position Sensor Circuit
   P0A46-671	Drive Motor "B" Position Sensor Circuit Range/Performance
   P0A47-670	Drive Motor "B" Position Sensor Circuit Low
   P0A4B-253	Generator Position Sensor Circuit
   P0A4C-513	Generator Position Sensor Circuit Range/Performance
   P0A4D-255	Generator Position Sensor Circuit Low
   P0A60-294	Drive Motor "A" Phase V Current
   P0A63-302	Drive Motor "A" Phase W Current
   P0A69 (all INF codes)*1	Drive Motor "B" Phase V Current
   P0A6C (all INF codes)*1	Drive Motor "B" Phase W Current
   P0A72 (all INF codes)*1	Generator Phase V Current
   P0A75 (all INF codes)*1	Generator Phase W Current
   P0A78-118, 119, 120, 266, 267, 279, 287, 503, 504, 505, 506, 586, 806, 807, 808	Drive Motor "A" Inverter Performance
   P0A79-693, 694, 695, 704, 812, 813, 814	Drive Motor "B" Inverter Performance
   P0A7A-325, 344, 517, 518, 809, 810, 811	Generator Inverter Performance
   P0A91-702	Drive Motor "B" Performance
   P0A92-521	Hybrid Generator Performance
   P0A94-124, 125, 126, 169, 170, 171, 442, 547, 548, 549, 554, 555, 556, 585, 587, 589, 590	DC/DC Converter Performance
   P0ADB-227	Hybrid Battery Positive Contactor Control Circuit Low
   P0ADC-226	Hybrid Battery Positive Contactor Control Circuit High
   P0ADF-229	Hybrid Battery Negative Contactor Control Circuit Low
   P0AE0-228	Hybrid Battery Negative Contactor Control Circuit High
   P0C76-523	Hybrid Battery System Discharge Time Too Long
   P3004-803	High Voltage Power Resource

   HINT: 

   • *1: If any INF codes are output for this DTC, refer to the corresponding diagnostic procedure.
   • P0A78-113 may be set due to a malfunction which also causes DTCs in the preceding table to be set. In this case, first troubleshoot the output DTCs in the preceding table. Then, perform a test to attempt to reproduce the problems, and check that no DTCs are output.
5. Turn the ignition switch off.

B → See step   27 

A: Go to next step 

NG → CONNECT SECURELY 

OK: Go to next step 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

NG → See step   19 

OK: Go to next step 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

NG → See step   21 

OK: Go to next step 

1. 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.

2. Remove the inverter terminal cover from the inverter with converter assembly.
   Fig 1: Identifying Inverter Terminal Cover, The Inverter With Converter Assembly & Bolts

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Check that the bolts for the generator cable are tightened to the specified torque, the generator cable is connected securely, and there are no contact problems.
   Fig 2: Identifying Generator Cables & Fasteners

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Specified Condition

   T=8.0 N*m {82 kgf*cm, 71 in.*lbf}

   NOTE:

   Make sure that the tightening torque of the bolts is between 6.4 and 9.6 N*m (65 and 98 kgf*cm, 57 and 85 in.*lbf).

4. Check for arc marks at the bolts for the generator cable.

   Result

   Result		Proceed to
   The terminals are connected securely and there are no contact problems.	There are no arc marks.	A
   The terminals are not connected securely and there is a contact problem.	There are arc marks.	B
   The terminals are not connected securely and there is a contact problem.	There are no arc marks.	C
   The terminals are connected securely and there are no contact problems.	There are arc marks.	B

5. Install the inverter terminal cover.

B → REPLACE MALFUNCTIONING PARTS 

C → CONNECT SECURELY 

A: Go to next step 

1. 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.

2. Remove the inverter terminal cover from the inverter with converter assembly.
   Fig 3: Identifying Inverter Terminal Cover, The Inverter With Converter Assembly & Bolts

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Check that the bolts for the motor cable are tightened to the specified torque, the motor cable is connected securely, and there are no contact problems.
   Fig 4: Identifying Motor Cable & Fasteners

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Specified Condition

   T=8.0 N*m {82 kgf*cm, 71 in.*lbf}

   NOTE:

   Make sure that the tightening torque of the bolts is between 6.4 and 9.6 N*m (65 and 98 kgf*cm, 57 and 85 in.*lbf).

4. Check for arc marks at the bolts for the motor cable.

   Result

   Result		Proceed to
   The terminals are connected securely and there are no contact problems.	There are no arc marks.	A
   The terminals are not connected securely and there is a contact problem.	There are arc marks.	B
   The terminals are not connected securely and there is a contact problem.	There are no arc marks.	C
   The terminals are connected securely and there are no contact problems.	There are arc marks.	B

5. Install the inverter terminal cover.

B → REPLACE MALFUNCTIONING PARTS 

C → CONNECT SECURELY 

A: Go to next step 

1. 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.

2. Remove the inverter terminal cover from the inverter with converter assembly.
   Fig 5: Identifying Inverter Terminal Cover, The Inverter With Converter Assembly & Bolts

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Disconnect the generator cable and motor cable from the inverter with converter assembly.
4. Check MG1 for an interphase short using a milliohmmeter.
   Fig 6: Identifying Three-Phase AC Cables for MG1

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Using a milliohmmeter, measure the resistance according to the value(s) in the table below.

      HINT: 

      If the MG1 temperature is high, the resistance will vary greatly from the specification. Therefore, measure the resistance at least 8 hours after the vehicle is stopped.

      Standard Resistance

      Tester Connection	Switch Condition	Specified Condition
      z28-3 (U) - z28-2 (V)	Ignition switch off	37 to 43 mΩ
      z28-2 (V) - z28-1 (W)	Ignition switch off	36 to 42 mΩ
      z28-1 (W) - z28-3 (U)	Ignition switch off	36 to 42 mΩ

      TEXT IN ILLUSTRATION
      
      

      *1	Three-phase AC Cable for MG1
      *a	Shield Ground

      HINT: 

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

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

      The calculation is based on the following:

      • R20: Resistance at 68° F (20°C) (mΩ)
      • Rt: Measured resistance (mΩ)
      • T: Temperature when the resistance is measured (° C)
5. Using a megohmmeter set to 500 V, measure the resistance according to the value(s) in the table below.
   NOTE:

   Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   z28-3 (U) - Body ground and shield ground	Ignition switch off	100 MΩ or higher
   z28-2 (V) - Body ground and shield ground	Ignition switch off	100 MΩ or higher
   z28-1 (W) - Body ground and shield ground	Ignition switch off	100 MΩ or higher

6. Connect the generator cable and motor cable.
7. Install the inverter terminal cover.

NG → See step   28 

OK: Go to next step 

1. 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.

2. Remove the inverter terminal cover from the inverter with converter assembly.
   Fig 7: Identifying Inverter Terminal Cover, The Inverter With Converter Assembly & Bolts

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Disconnect the generator cable and motor cable from the inverter with converter assembly.
4. Check MG2 for an interphase short using a milliohmmeter.
   Fig 8: Identifying Three-Phase AC Cables For MG1

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Using a milliohmmeter, measure the resistance according to the value(s) in the table below.

      HINT: 

      If the MG2 temperature is high, the resistance will vary greatly from the specification. Therefore, measure the resistance at least 8 hours after the vehicle is stopped.

      Standard Resistance

      Tester Connection	Switch Condition	Specified Condition
      z26-3 (U) - z26-2 (V)	Ignition switch off	52 to 60 mΩ
      z26-2 (V) - z26-1 (W)	Ignition switch off	50 to 58 mΩ
      z26-1 (W) - z26-3 (U)	Ignition switch off	50 to 58 mΩ

      TEXT IN ILLUSTRATION
      
      

      *1	Three-phase AC Cable for MG2
      *a	Shield Ground

      HINT: 

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

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

      The calculation is based on the following:

      • R20: Resistance at 68° F (20°C) (mΩ)
      • Rt: Measured resistance (mΩ)
      • T: Temperature when the resistance is measured (° C)
5. Using a megohmmeter set to 500 V, measure the resistance according to the value(s) in the table below.
   NOTE:

   Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   z26-3 (U) - Body ground and shield ground	Ignition switch off	100 MΩ or higher
   z26-2 (V) - Body ground and shield ground	Ignition switch off	100 MΩ or higher
   z26-1 (W) - Body ground and shield ground	Ignition switch off	100 MΩ or higher

6. Connect the generator cable and motor cable.
7. Install the inverter terminal cover.

NG → See step   28 

OK: Go to next step 

1. Remove the PCU fuse from the engine room relay block No. 2.
   Fig 9: Identifying PCU Fuse

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   PCU fuse	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Engine Room Relay Block No. 2
   *2	PCU fuse

3. Install the PCU fuse.

NG → See step   23 

OK: Go to next step 

1. 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.

2. Disconnect connector A64 from the inverter with converter assembly.
3. Measure the resistance according to the value(s) in the table below.
   Fig 10: Checking Harness And Connector (Inverter With Converter Assembly Power Source Circuit)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   A64-10 (GND1) - Body ground	Ignition switch off	Below 1 Ω
   A64-11 (GND2) - Body ground	Ignition switch off	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

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

4. Turn the ignition switch to ON.
5. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A64-30 (+B) - Body ground	Ignition switch ON	11 to 14 V
   A64-31 (+B2) - Body ground	Ignition switch ON	11 to 14 V

6. Turn the ignition switch off.
7. Connect the inverter with converter assembly connector.

NG → REPAIR OR REPLACE POWER SOURCE CIRCUIT 

OK: Go to next step 

1. 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.

2. Turn the ignition switch off.
3. Disconnect connector A64 from the inverter with converter assembly.
4. Disconnect connector A66 from the hybrid vehicle control ECU.
5. Measure the resistance according to the value(s) in the table below.
   Fig 11: Checking Harness And Connector (Hybrid Vehicle Control ECU - Inverter With Converter)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance (Check for Open)

   Tester Connection	Switch Condition	Specified Condition
   A66-24 (HTM+) - A64-9 (HTM+)	Ignition switch off	Below 1 Ω
   A66-25 (HTM-) - A64-20 (HTM-)	Ignition switch off	Below 1 Ω
   A66-30 (MTH+) - A64-8 (MTH+)	Ignition switch off	Below 1 Ω
   A66-29 (MTH-) - A64-19 (MTH-)	Ignition switch off	Below 1 Ω
   A66-33 (REQ+) - A64-26 (REQ+)	Ignition switch off	Below 1 Ω
   A66-32 (REQ-) - A64-37 (REQ-)	Ignition switch off	Below 1 Ω
   A66-21 (CLK+) - A64-7 (CLK+)	Ignition switch off	Below 1 Ω
   A66-20 (CLK-) - A64-18 (CLK-)	Ignition switch off	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Switch Condition	Specified Condition
   A66-24 (HTM+) or A64-9 (HTM+) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
   A66-25 (HTM-) or A64-20 (HTM-) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
   A66-30 (MTH+) or A64-8 (MTH+) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
   A66-29 (MTH-) or A64-19 (MTH-) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
   A66-33 (REQ+) or A64-26 (REQ+) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
   A66-32 (REQ-) or A64-37 (REQ-) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
   A66-21 (CLK+) or A64-7 (CLK+) - Body ground and other terminals	Ignition switch off	10 kΩ or higher
   A66-20 (CLK-) or A64-18 (CLK-) - Body ground and other terminals	Ignition switch off	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Inverter with Converter Assembly)
   *b	Rear view of wire harness connector (to Hybrid Vehicle Control ECU)

6. Turn the ignition switch to ON.
7. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A66-24 (HTM+) or A64-9 (HTM+) - Body ground	Ignition switch ON	Below 1 V
   A66-25 (HTM-) or A64-20 (HTM-) - Body ground	Ignition switch ON	Below 1 V
   A66-30 (MTH+) or A64-8 (MTH+) - Body ground	Ignition switch ON	Below 1 V
   A66-29 (MTH-) or A64-19 (MTH-) - Body ground	Ignition switch ON	Below 1 V
   A66-33 (REQ+) or A64-26 (REQ+) - Body ground	Ignition switch ON	Below 1 V
   A66-32 (REQ-) or A64-37 (REQ-) - Body ground	Ignition switch ON	Below 1 V
   A66-21 (CLK+) or A64-7 (CLK+) - Body ground	Ignition switch ON	Below 1 V
   A66-20 (CLK-) or A64-18 (CLK-) - Body ground	Ignition switch ON	Below 1 V

   NOTE:

   Turning the ignition switch to ON with the hybrid vehicle control ECU and inverter with converter assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

8. Turn the ignition switch off.
9. Connect the hybrid vehicle control ECU connector.
10. Connect the inverter with converter assembly connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect connector A66 from the hybrid vehicle control ECU.
2. Measure the resistance according to the value(s) in the table below.
   Fig 12: Checking Hybrid Vehicle Control ECU

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   A66-24 (HTM+) - A66-25 (HTM-)	Ignition switch off	109 to 131 Ω
   A66-30 (MTH+) - A66-29 (MTH-)	Ignition switch off	109 to 131 Ω
   A66-33 (REQ+) - A66-32 (REQ-)	Ignition switch off	109 to 131 Ω
   A66-21 (CLK+) - A66-20 (CLK-)	Ignition switch off	109 to 131 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Hybrid Vehicle Control ECU)

3. Connect the hybrid vehicle control ECU connector.

NG → See step   29 

OK: Go to next step 

NG → CONNECT SECURELY 

OK: Go to next step 

NG → CONNECT SECURELY 

OK → See step   30 

NG → CONNECT SECURELY 

OK: Go to next step 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   28 

NG → CONNECT SECURELY 

OK: Go to next step 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   28 

1. 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.

2. Disconnect connector A64 from the inverter with converter assembly.
3. Measure the resistance according to the value(s) in the table below.
   Fig 13: Checking Harness And Connector (Inverter With Converter Assembly - PCU Fuse)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   A64-30 (+B) - Body ground	Ignition switch off	10 kΩ or higher
   A64-31 (+B2) - Body ground	Ignition switch off	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

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

4. Connect the inverter with converter assembly connector.

NG → See step   25 

OK: Go to next step 

1. Replace the inverter with converter assembly. Refer to REMOVAL .

NEXT → REPLACE FUSE (PCU) 

1. Repair or replace the wire harness or connector.

NEXT → REPLACE FUSE (PCU)