DTC P2519-766: A/C Request "A" Circuit: Procedure

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

   Result

   Result	Proceed to
   P2519-766 only is output.	A
   P0AE6-225 is output.	B

B → See step   8 

A: Go to next step 

1. Turn the power switch off.
2. Remove the service plug grip. Refer to PRECAUTION .
   NOTE:

   After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair information because this may cause a malfunction.

3. Check the connection of the low voltage connector of the hybrid vehicle converter.
   Fig 1: Locating Low Voltage Connector Of Hybrid Vehicle Converter

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK

   The connector is connected securely and there are no contact problems.

   HINT: 

   For the removal and installation procedures related to inspection of the connection of the low voltage connector of the hybrid vehicle converter. Refer to REMOVAL .

NG → CONNECT SECURELY 

OK: Go to next step 

1. Check the connection of the battery smart unit connector.
   Fig 2: Identifying Battery Smart Unit Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK

   The connector is connected securely and there are no contact problems.

   HINT: 

   It is necessary to move the HV battery to access the hybrid vehicle converter connector. For the removal and installation procedures related to inspection of the connection of the battery smart unit connector. Refer to REMOVAL .

NG → CONNECT SECURELY 

OK: Go to next step 

1. Check that the service plug grip is not installed.
2. With the battery in an accessible position, connect the battery smart unit and hybrid vehicle converter connectors.
3. Connect the 2 floor wires to the luggage room junction block assembly.
   Fig 3: Locating Floor Wires

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Insulate the AMD terminal of the removed wire with insulating tape to prevent a short to body ground.
5. Connect the battery pack wire connector.

   HINT: 

   Connecting the battery wire connector will allow power to be supplied to the battery smart unit when the power switch is turned on (IG).

   Fig 4: Connecting Battery Pack Wire Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Disconnect the low voltage connector from the hybrid vehicle converter.
   Fig 5: Identifying z35 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
7. Turn the power switch on (IG).
8. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   z35-5 (IDH) - Body ground	Power switch on (IG)	10 to 14 V

NG → See step   5 

OK → See step   7 

1. Turn the power switch off.
2. Check that the service plug grip is not installed.
3. Disconnect the battery pack wire connector.
   Fig 6: Disconnecting Battery Pack Wire Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Disconnect connector z36 from the battery smart unit.
   Fig 7: Checking Harness And Connector (Battery Smart Unit - Hybrid Vehicle Converter)

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

   Standard resistance (Check for open)

   Tester Connection	Switch Condition	Specified Condition
   z36-4 (IDH) - z35-5 (IDH)	Power switch off	Below 1 Ω

   Standard resistance (Check for short)

   Tester Connection	Switch Condition	Specified Condition
   z36-4 (IDH) or z35-5 (IDH) - Body ground and other terminals	Power switch off	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   6