DTC P0A82-123: Hybrid Battery Pack Cooling Fan 1: 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

   DTC P0A1F-123 is output.

YES → GO TO INSPECTION PROCEDURE RELEVANT TO OUTPUT DTC 

NO: Go to next step 

1. Remove the luggage compartment front trim cover. Refer to REMOVAL .
2. Remove the luggage compartment rear trim cover. Refer to REMOVAL .
3. Check that the intake ducts and battery cooling blower are not disconnected, damaged, or clogged with foreign objects, and that the acoustical materials have not peeled.
   Fig 1: Identifying Intake Ducts And Battery Cooling Blower Components

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK

   The ducts and blower are not disconnected, damaged, or clogged with foreign objects and the acoustical materials have not peeled.

NG → CORRECT THE PROBLEM 

OK: Go to next step 

1. Disconnect the battery cooling blower assembly connector.
2. Disconnect connector A61 from the hybrid vehicle control ECU.
3. Measure the resistance according to the value(s) in the table below.
   Fig 2: Identifying Battery Cooling Blower Assembly And Hybrid Vehicle Control ECU A61 Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance (Check for short)

   Tester Connection	Specified Condition
   SI0 (N38-3) or SI0 (A61-46) - Body ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the hybrid vehicle control ECU. Refer to REMOVAL .
2. Measure the resistance according to the value(s) in the table below.
   Fig 3: Identifying Hybrid Vehicle Control ECU Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance (Check for short)

   Tester Connection	Specified Condition
   SI0 (A61-46) - E02 (C64-65)	10 kΩ or higher
   SI0 (A61-46) - ME01 (C64-13)	10 kΩ or higher
   SI0 (A61-46) - E03 (C64-25)	10 kΩ or higher
   SI0 (A61-46) - E04 (C64-48)	10 kΩ or higher
   SI0 (A61-46) - E01 (C64-51)	10 kΩ or higher
   SI0 (A61-46) - E1 (C64-14)	10 kΩ or higher
   SI0 (A61-46) - E12 (C64-28)	10 kΩ or higher

NG → REPLACE HYBRID VEHICLE CONTROL ECU 

OK: Go to next step 

1. Connect the battery cooling blower assembly connector.
2. Connect connector A61 to the hybrid vehicle control ECU.
3. Connect the Techstream to the DLC3.
4. Turn the power switch on (IG).
5. Select the following menu items: Powertrain / Hybrid Control / Active Test / Driving the Battery Cooling Fan.

   HINT: 

   Check "Cooling Fan Mode 1" in the data list using the Techstream. If the "Cooling Fan Mode 1" is 1 to 6, it is not necessary to perform the Active Test.

6. Select the following menu items: All Data / VMF Fan Motor Voltage 1.
7. Select each air volume mode (1 to 6) in the "Driving the Battery Cooling Fan" active test to operate the battery cooling blower assembly.
8. While the cooling fan is operating, compare the value in the data list (VMF Fan Motor Voltage 1) with the voltage value that was actually measured at the battery cooling blower assembly connector.
   Fig 4: Identifying Battery Cooling Blower Assembly Connector N38 Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard

   Tester Connection	Specified Condition
   N38-2 - N38-4	There is no difference between the value in the data list (cooling fan voltage) and the voltage value that was actually measured at the battery cooling blower assembly connector.

   OK

   Difference of voltage is 1 V or less.

NG → See step   7 

OK → See step   6