DTC P0AE7-224: Hybrid Battery Precharge Contactor Control Circuit High: Procedure

1. Disconnect the battery pack wire connector. Refer to COMPONENTS .
   Fig 1: Locating Battery Pack Wire Connector

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2. Turn the power switch on (IG).
3. Measure the voltage according to the value(s) in the table below.
   Fig 2: Identifying Battery Pack Wire Connector VN1

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester Connection	Specified Condition
   SMRP (VN1-8) - Body ground	Below 1 V

NG → See step   3 

OK: Go to next step 

1. Check that the service plug grip is not installed. Refer to PRECAUTION .
   Fig 3: Identifying Hybrid Vehicle Converter & N1 Connector

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2. Disconnect connector N1 from the hybrid vehicle converter. Refer to COMPONENTS .
3. Turn the power switch on (IG).
4. Measure the voltage according to the value(s) in the table below.
   Fig 4: Identifying Battery Pack Wire Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester Connection	Specified Condition
   SMRP (VN1-8) - Body ground	Below 1 V

   NOTE:

   Turning the power switch on (IG) with the battery pack wire connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

5. Turn the power switch off.
6. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Specified Condition
   SMRP (VN1-8) - Body ground	10 kΩ or more

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   5 

1. Disconnect connector A54 from the hybrid vehicle control ECU.
   Fig 5: Identifying A54 Hybrid Vehicle Control ECU Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the power switch on (IG).
3. Measure the voltage according to the value(s) in the table below.
   Fig 6: Identifying Battery Pack Wire Connector VN1

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester Connection	Specified Condition
   SMRP (VN1-8) - Body ground	Below 1 V

   NOTE:

   Turning the power switch on (IG) with the battery pack wire connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   4