DTC    P0A84-123    Hybrid Battery Pack Cooling Fan 1

for Preparation Click here

DESCRIPTION

1. The speed of the battery cooling blower assembly is controlled by the power management control ECU. Battery cooling blower assembly power is supplied when the FCTL terminal of the power management control ECU turns on the battery blower relay. The power management control ECU sends command signals (SI) to the battery cooling blower assembly to get the fan speed corresponding to the HV battery temperature. Information about the voltage applied to the battery cooling blower assembly (VM) is sent to the power management control ECU as a monitor signal using serial communication via the battery smart unit.
   
   
   
   
   
   

WIRING DIAGRAM

INSPECTION PROCEDURE

CAUTION:

1. Before inspecting the high-voltage system, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
   
2. After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals.
   

   HINT:

   Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

NOTICE:

After the power switch is turned off, the display and navigation module display (HDD navigation system) records various types of memory and settings. As a result, after turning the power switch off, make sure to wait at least 60 seconds before disconnecting the cable from the negative (-) battery terminal.

1. Connect the intelligent tester to the DLC3.
   

2. Turn the power switch on (IG).
   

3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
   

4. Read output DTCs (Click here).
   

   Result:

   Result	Proceed to
   P0AFC-123 is not output.	A
   P0AFC-123 is also output.	B

5. Disconnect the intelligent tester from the DLC3.
   

B	GO TO DTC CHART

A

1. Remove the rear side seatback assembly RH (Click here).
   

2. Connect the intelligent tester to the DLC3.
   

3. Turn the power switch on (IG).
   

4. Enter the following menus: Powertrain / Hybrid Control / Active Test / Driving the Battery Cooling Fan.
   

   NOTICE:

   If the active test cannot be performed, skip it and proceed to the next step to check fan operates and air is sucked. In accordance with fail-safe system operation, the power management control ECU sends a command to operate the battery cooling fan.

5. Select air volume mode 6 in the "Driving the Battery Cooling Fan" active test to operate the battery cooling blower assembly.
   

6. Check that the fan operates and air is sucked into the inlet duct.
   

   HINT:

   The cooling fan may not stop even when turning the cooling fan off in the "Driving the Battery Cooling Fan" active test. This is due to HV system control and not a malfunction.

   OK:

   The fan operates.
   

7. Install the rear side seatback assembly RH (Click here).
   

NG	Go to step 5

OK

CAUTION:

Be sure to wear insulated gloves.

1. Disconnect the cable from the negative (-) battery terminal.
   

2. Check that the service plug grip is not installed.
   

   NOTICE:

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

3. Remove the No. 1 hybrid vehicle battery carrier bracket sub-assembly (Click here).
   

4. Disconnect the S14 connector of the battery cooling blower assembly.
   

5. Disconnect the c1 connector of the battery smart unit.
   

6. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance (Check for Open):

   Tester Connection	Switch Condition	Specified Condition
   S14-2 (VM0) - c1-7 (VM)	Power switch off	Below 1 Ω

   Standard Resistance (Check for Short):

   Tester Connection	Switch Condition	Specified Condition
   S14-2 (VM0) or c1-7 (VM) - Body ground	Power switch off	10 kΩ or higher

   Text in Illustration 

   *1	Front view of wire harness connector (to Battery Cooling Blower Assembly)
   *2	Rear view of wire harness connector (to Battery Smart Unit)

7. Connect the S14 connector of the battery cooling blower assembly.
   

8. Connect the c1 connector of the battery smart unit.
   

9. Install the No. 1 hybrid vehicle battery carrier bracket sub-assembly (Click here).
   

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

1. Disconnect the cable from the negative (-) battery terminal.
   

2. Check that the service plug grip is not installed.
   

   NOTICE:

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

3. Remove the No. 1 hybrid vehicle battery carrier bracket sub-assembly (Click here).
   

4. Connect the cable to the negative (-) battery terminal.
   

5. Connect the intelligent tester to the DLC3.
   

6. Turn the power switch on (IG).
   

   NOTICE:

   1. After removing the service plug grip, do not turn the power switch on (READY) unless instructed by the repair manual because this may cause a malfunction.
      
   2. If the power switch is turned on (IG) with the service plug grip removed, DTC P0A0D-350 for the interlock switch system will be stored. If this DTC is output, clear the DTC using the intelligent tester (Click here).
      

7. Enter the following menus: Powertrain / Hybrid Control / Active Test / Driving the Battery Cooling Fan.
   

   NOTICE:

   If the active test cannot be performed, skip it and proceed to the next step to check voltage. In accordance with fail-safe system operation, the power management control ECU sends a command to operate the battery cooling fan.

8. Enter the following menus: All Data / VMF Fan Motor Voltage 1.
   

9. Select each air volume mode (1 to 6) in the "Driving the Battery Cooling Fan" active test to operate the battery cooling blower assembly.
   

10. 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.
    

    Standard:

    Tester Connection	Condition	Specified Condition
    S14-2 (VM0) - S14-4 (GND0)	Battery cooling blower is operating	Difference between the value in the Data List (VMF Fan Motor Voltage 1) and the actual measurement value is 1 V or less.

    Text in Illustration 

    *1	Component with harness connected (Battery Cooling Blower assembly)

HINT:

Compare the values in each air volume mode (1 to 6). If the active test cannot be performed, compare the values only in the current air volume mode.

11. Install the No. 1 hybrid vehicle battery carrier bracket sub-assembly (Click here).
    

NG	REPLACE BATTERY SMART UNIT (Click here)

OK
REPLACE BATTERY COOLING BLOWER ASSEMBLY (Click here)

1. Remove the integration relay from the engine room junction block assembly (Click here).
   

2. Measure the resistance according to the value(s) in the table below.
   

   
   
   
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   1C-1 - 1A-8	Battery voltage is applied across terminals 1A-6 and 1A-7	Below 1 Ω
   	No battery voltage is applied across terminals 1A-6 and 1A-7	10 kΩ or higher

   
   

   Text in Illustration 

   *1	Integration Relay	*2	BATT FAN Fuse
   *3	BATT FAN Relay	-	-

3. Install the integration relay (Click here).
   

NG	Go to step 13

OK

1. Disconnect the cable from the negative (-) battery terminal.
   

2. Check that the service plug grip is not installed.
   

   NOTICE:

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

3. Remove the No. 1 hybrid vehicle battery carrier bracket sub-assembly (Click here).
   

4. Connect the cable to the negative (-) battery terminal.
   

5. Connect the intelligent tester to the DLC3.
   

6. Turn the power switch on (IG).
   

   NOTICE:

   1. After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
      
   2. If the power switch is turned on (IG) with the service plug grip removed, DTC P0A0D-350 for the interlock switch system will be stored. If this DTC is output, clear the DTC using the intelligent tester (Click here).
      

7. Enter the following menus: Powertrain / Hybrid Control / Active Test / Driving the Battery Cooling Fan.
   

   NOTICE:

   If the active test cannot be performed, skip it and proceed to the next step to check voltage. In accordance with fail-safe system operation, the power management control ECU sends a command to operate the battery cooling fan.

8. Enter the following menus: All Data / VMF Fan Motor Voltage 1.
   

9. Select each air volume mode (1 to 6) in the "Driving the Battery Cooling Fan" active test to operate the battery cooling blower assembly.
   

10. Measure the voltage according to the value(s) in the table below.
    

    Standard Voltage:

    Tester Connection	Condition	Specified Condition
    S14-1 (IG0) - Body ground	Battery cooling blower is operating	11 to 14 V

    Text in Illustration 

    *1	Component with harness connected (Battery Cooling Blower Assembly)

    HINT:

    Measure the voltage on the wire side of the connector that is part of the battery cooling blower assembly.

11. Turn the power switch off.
    

12. Install the No. 1 hybrid vehicle battery carrier bracket sub-assembly (Click here).
    

NG	Go to step 9

OK

1. Disconnect the cable from the negative (-) battery terminal.
   

2. Check that the service plug grip is not installed.
   

   NOTICE:

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

3. Remove the No. 1 hybrid vehicle battery carrier bracket sub-assembly (Click here).
   

4. Connect the cable to the negative (-) battery terminal.
   

5. Turn the power switch on (IG).
   

   NOTICE:

   1. After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
      
   2. If the power switch is turned on (IG) with the service plug grip removed, DTC P0A0D-350 for the interlock switch system will be stored. If this DTC is output, clear the DTC using the intelligent tester (Click here).
      

6. Using a service wire, connect terminals 3 (SI0) and 4 (GND0) of the battery cooling blower assembly connector.
   

   Standard Voltage:

   Tester Connection	Switch Condition	Specified Condition
   S14-3 (SI0) - S14-4 (GND0)	Power switch on (IG)	Fan operates

   Text in Illustration 

   *1	Component with harness connected (Battery Cooling Blower Assembly)

   HINT:

   If DTCs are output after the check, clear the DTCs using the intelligent tester.

7. Turn the power switch off.
   

8. Install the No. 1 hybrid vehicle battery carrier bracket sub-assembly (Click here).
   

NG	REPLACE BATTERY COOLING BLOWER ASSEMBLY (Click here)

OK

1. Disconnect the cable from the negative (-) battery terminal.
   

2. Check that the service plug grip is not installed.
   

   NOTICE:

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

3. Remove the No. 1 hybrid vehicle battery carrier bracket sub-assembly (Click here).
   

4. Remove the S14 connector of the battery cooling blower assembly.
   

5. Disconnect the A21 connector of the power management control ECU (Click here).
   

6. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance (Check for Open):

   Tester Connection	Switch Condition	Specified Condition
   S14-3 (SI0) - A21-29 (SI0)	Power switch off	Below 1 Ω

   Standard Resistance (Check for Short):

   Tester Connection	Switch Condition	Specified Condition
   S14-3 (SI0) or A21-29 (SI0) - Body ground	Power switch off	10 kΩ or higher

   Text in Illustration 

   *1	Front view of wire harness connector (to Battery Cooling Blower Assembly)
   *2	Rear view of wire harness connector (to Power Management Control ECU)

   NOTICE:

   When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the holder.

7. Connect the cable to the negative (-) battery terminal.
   

8. Turn the power switch on (IG).
   

   NOTICE:

   1. After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
      
   2. If the power switch is turned on (IG) with the service plug grip removed, DTC P0A0D-350 for the interlock switch system will be stored. If this DTC is output, clear the DTC using the intelligent tester (Click here).
      

9. Measure the voltage according to the value(s) in the table below.
   

   Standard Voltage:

   Tester Connection	Switch Condition	Specified Condition
   S14-3 (SI0) - Body ground	Power switch on (IG)	Below 1 V

10. Turn the power switch off.
    

11. Connect the S14 connector of the battery cooling blower assembly.
    

12. Install the No. 1 hybrid vehicle battery carrier bracket sub-assembly (Click here).
    

13. Connect the A21 connector of the power management control ECU (Click here).
    

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
REPLACE POWER MANAGEMENT CONTROL ECU (Click here)

1. Disconnect the cable from the negative (-) battery terminal.
   

2. Disconnect the A21 connector of the power management control ECU (Click here).
   

3. Remove the integration relay (Click here).
   

4. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Switch Condition	Specified Condition
   1A-7 - A21-4 (FCTL)	Power switch off	Below 1 Ω

   Text in Illustration 

   *1	Front view of wire harness connector (to Integration Relay)
   *2	Rear view of wire harness connector (to Power Management Control ECU)

   NOTICE:

   When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the holder.

5. Connect the cable to the negative (-) battery terminal.
   

6. Measure the voltage according to the value(s) in the table below.
   

   Standard Voltage:

   Tester Connection	Switch Condition	Specified Condition
   A21-4 (FCTL) - Body ground	Power switch off	Below 1 V
   	Power switch on (IG)	Below 1 V

   NOTICE:

   If the power switch is turned on (IG) with the connector disconnected, DTCs will be stored. If DTCs are output, clear them using the intelligent tester (Click here).

7. Connect the A21 connector of the power management control ECU (Click here).
   

8. Install the integration relay (Click here).
   

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

1. Disconnect the cable from the negative (-) battery terminal.
   

2. Disconnect the L5 connector of the power management control ECU (Click here).
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Switch Condition	Specified Condition
   L5-5 (E01) - Body ground	Power switch off	Below 1 Ω

   Text in Illustration 

   *1	Rear view of wire harness connector (to Power Management Control ECU)

   NOTICE:

   When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the holder.

4. Connect the L5 connector of the power management control ECU (Click here).
   

5. Connect the cable to the negative (-) battery terminal.
   

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

1. Disconnect the cable from the negative (-) battery terminal.
   

2. Disconnect the L6 connector of the power management control ECU (Click here).
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Switch Condition	Specified Condition
   L6-5 (E02) - Body ground	Power switch off	Below 1 Ω

   Text in Illustration 

   *1	Rear view of wire harness connector (to Power Management Control ECU)

   NOTICE:

   When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the holder.

4. Connect the L6 connector of the power management control ECU (Click here).
   

5. Connect the cable to the negative (-) battery terminal.
   

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

1. Disconnect the cable from the negative (-) battery terminal.
   

2. Remove the integration relay (Click here).
   

3. Remove the No. 1 hybrid vehicle battery carrier bracket sub-assembly (Click here).
   

4. Disconnect the S14 connector of the battery cooling blower assembly.
   

5. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Switch Condition	Specified Condition
   1A-8 - S14-1 (IG0)	Power switch off	Below 1 Ω

   Text in Illustration 

   *1	Front view of wire harness connector (to Battery Cooling Blower Assembly)
   *2	Front view of wire harness connector (to Integration Relay)

6. Install the integration relay (Click here).
   

7. Connect the S14 connector of the battery cooling blower assembly.
   

8. Install the No. 1 hybrid vehicle battery carrier bracket sub-assembly (Click here).
   

9. Connect the cable to the negative (-) battery terminal.
   

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
REPLACE POWER MANAGEMENT CONTROL ECU (Click here)

1. Replace the integration relay (Click here).
   

NEXT

1. Disconnect the cable from the negative (-) battery terminal.
   

2. Remove the integration relay (Click here).
   

3. Remove the No. 1 hybrid vehicle battery carrier bracket sub-assembly (Click here).
   

4. Disconnect the S14 connector of the battery cooling blower assembly.
   

5. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Switch Condition	Specified Condition
   S14-1 (IG0) - Terminals other than 1A-8 and body ground	Power switch off	10 kΩ or higher

   Text in Illustration 

   *1	Front view of wire harness connector (to Battery Cooling Blower Assembly)
   *2	Front view of wire harness connector (to Integration Relay)

6. Install the integration relay (Click here).
   

7. Connect the S14 connector of the battery cooling blower assembly.
   

8. Install the No. 1 hybrid vehicle battery carrier bracket sub-assembly (Click here).
   

9. Connect the cable to the negative (-) battery terminal.
   

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

1. Disconnect the cable from the negative (-) battery terminal.
   

2. Remove the No. 1 hybrid vehicle battery carrier bracket sub-assembly (Click here).
   

3. Disconnect the S14 connector of the battery cooling blower assembly.
   

4. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Switch Condition	Specified Condition
   S14-1 (IG0) - S14-4 (GND0) and body ground	Power switch off	10 kΩ or higher

   Text in Illustration 

   *1	Component without harness connected (Battery Cooling Blower Assembly)

5. Connect the S14 connector of the battery cooling blower assembly.
   

6. Install the No. 1 hybrid vehicle battery carrier bracket sub-assembly (Click here).
   

7. Connect the cable to the negative (-) battery terminal.
   

NG	REPLACE BATTERY COOLING BLOWER ASSEMBLY (Click here)

OK
RECOVERY TO NORMAL