DTC P0A10-263: DC / DC Converter Status Circuit High Input: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
4. Check if DTCs are output.

   Result

   Result	Proceed to
   DTC P0A10-263 only is output.	A
   Other DTCs are also output.	B

5. Turn the power switch off.

B → See step   6 

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 power switch on (READY), unless instructed by the repair service information because this may cause a malfunction.

2. Disconnect connector z17 from the hybrid vehicle converter.
   Fig 1: Identifying z17 Hybrid Vehicle Converter Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Turn the power switch on (IG).
4. Measure the voltage according to the value(s) in the table below.
   Fig 2: Identifying NODD Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT: 

   Turning the power switch on (IG) with the service plug grip removed causes interlock switch system DTC P0A0D- 350 to be output.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   z17-2 (NODD) - Body ground	Power switch on (IG)	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *1	Rear view of wire harness connector (to Hybrid Vehicle Converter)

5. Turn the power switch off.
6. Connect the hybrid vehicle converter connector.

NG → See step   3 

OK → See step   4 

1. 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 repair service information because this may cause a malfunction.

2. Disconnect connector A58 from the hybrid vehicle control ECU.
3. Disconnect connector z17 from the hybrid vehicle converter.
4. Turn the power switch on (IG).
5. Measure the voltage according to the value(s) in the table below.
   Fig 3: Identifying A58 Hybrid Vehicle Control ECU, z17 Hybrid Vehicle Converter & NODD Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT: 

   Turning the power switch on (IG) with the service plug grip removed causes interlock switch system DTC P0A0D- 350 to be output.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A58-75 (NODD) or z17-2 (NODD) - Body ground	Power switch on (IG)	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Hybrid Vehicle Control ECU)
   *2	Rear view of wire harness connector (to Hybrid Vehicle Converter)

   NOTE:

   Turning the power switch on (IG) with the hybrid vehicle control ECU connector and the hybrid vehicle converter connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

6. Turn the power switch off.
7. Connect the hybrid vehicle converter connector.
8. Connect the hybrid vehicle control ECU connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   5