HYBRID BATTERY SYSTEM, Diagnostic DTC:P0A97-123

DTC Code DTC Name
P0A97-123 Hybrid Battery Pack Cooling Fan 2 Performance / Stuck OFF

DESCRIPTION


DTC No. INF Code DTC Detection Condition Trouble Area
P0A97 123 The speed of the battery cooling blower assembly (for lower side) is not within the specified range (1 trip detection)

  • Battery cooling blower assembly (for lower side)

  • Battery smart unit

  • Power management control ECU

  • No. 1 hybrid battery intake duct RH

  • Harness or connector

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0A84-123 Click here.

CAUTION / NOTICE / HINT

CAUTION:


  • 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.

  • After removing the service plug grip, wait at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work Click here.

    Tech Tips

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

Note

After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work Click here.

PROCEDURE


  1. CHECK FOR DTCS (HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

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

    4. Read output DTCs.

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

    5. Turn the power switch off.


    B

    GO TO DTC CHART (P0AFC-123) Click here

    A

  2. CHECK DUCT AND BLOWER


    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 manual because this may cause a malfunction.

    2. A000NQUE01
      Text in Illustration
      *1 No. 1 Hybrid Battery Intake Duct RH

      Check that the No. 1 hybrid battery intake duct RH and battery cooling blower are not disconnected, damaged, or clogged with foreign objects, and that the acoustical materials have not peeled.

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

    NG

    CORRECT THE PROBLEM

    OK

  3. CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER [for Lower Side] - BATTERY SMART UNIT)

    CAUTION:

    Be sure to wear insulated gloves.


    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 manual because this may cause a malfunction.

    2. Remove the No. 4 hybrid vehicle battery carrier bracket sub-assembly Click here.

    3. Disconnect connector from the battery cooling blower assembly (for lower side).

    4. Disconnect connector from the battery smart unit.

    5. B002BD7E02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Battery Smart Unit)
      *b

      Rear view of wire harness connector

      (to Battery Cooling Blower Assembly [for Lower Side])

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      m1-2 (FP1) - m4-7 (FP1) Power switch off Below 1 Ω
      m1-2 (FP1) - Body ground and other terminals Power switch off 10 kΩ or higher

      Note

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

    6. Connect the battery smart unit connector.

    7. Connect the battery cooling blower assembly (for lower side) connector.

    8. Install the No. 4 hybrid vehicle battery carrier bracket sub-assembly.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER [for Lower Side] - POWER MANAGEMENT CONTROL ECU)


    1. Disconnect connector from the power management control ECU.

    2. Remove the front luggage compartment trim cover Click here.

    3. Disconnect connector from the battery cooling blower assembly (for lower side).

    4. A000OCBE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)
      *b

      Rear view of wire harness connector

      (to Battery Cooling Blower Assembly [for Lower Side])

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      m1-3 (SI1) or N91-18 (SI1) - Body ground Power switch off 10 kΩ or higher
      m1-3 (SI1) - N91-18 (SI1) Power switch off Below 1 Ω

      Note

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

    5. Connect the battery cooling blower assembly (for lower side) connector.

    6. Install the front luggage compartment trim cover.

    7. Connect the power management control ECU connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK POWER MANAGEMENT CONTROL ECU (GROUND SHORT CHECK)


    1. Remove the power management control ECU Click here.

    2. A000Q3XE02
      Text in Illustration
      *a

      Component without harness connected

      (Power Management Control ECU)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N91-18 (SI1) - N91-5 (E01) Always 10 kΩ or higher
      N91-18 (SI1) - N92-5 (E02) Always 10 kΩ or higher

    3. Install the power management control ECU.


    NG

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    OK

  6. READ VALUE USING GTS (COOLING FAN FREQUENCY)

    CAUTION:

    Be sure to wear insulated gloves.


    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 manual because this may cause a malfunction.

    2. Remove the front luggage compartment trim cover Click here.

    3. Connect the cable to the negative (-) auxiliary battery terminal.

    4. Connect the GTS to the DLC3.

    5. Turn the power switch on (IG).

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

    7. Clear the DTCs and freeze frame data.

      Tech Tips

      When DTCs are cleared, freeze frame data and INF codes are also cleared.

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

    9. Enter the following menus: Powertrain / Hybrid Control / Data List / Cooling Fan Frequency2.

    10. Select each air volume mode (1 to 6) in the "Driving the Battery Cooling Fan" Active Test to operate the battery cooling blower assembly (for lower side).

      Note

      If the Active Test cannot be performed, skip it and proceed to the next step to check the frequency value. In accordance with fail-safe system operation, the hybrid vehicle control ECU assembly sends a command to operate the battery cooling fan assembly (for upper side).

    11. B002BZ6E01
      Text in Illustration
      *a

      Component with harness connected

      (Battery Cooling Blower Assembly [for Lower Side])
      *b

      Rear view of wire harness connector

      (to Battery Cooling Blower Assembly [for Lower Side])

      While the cooling fan is operating, compare the value in the Data List (Cooling Fan Frequency 2) with the Frequency value that was actually measured at the battery cooling blower assembly connector.

      Standard
      Tester Connection Condition
      m1-2 (FP1) - m1-4 (GND1) Battery cooling blower is operating

      Note

      Turning the power switch on (IG) with the service grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

      Tech Tips

      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.

    12. Turn the power switch off.

    13. Disconnect the GTS from the DLC3.

    14. Disconnect the cable from the negative (-) auxiliary battery terminal.

    15. Install the front luggage compartment trim cover.

      Result
      Result Proceed to
      The value in the Data List (Cooling Fan Frequency1) and the actual measured value at the battery cooling blower assembly (for Lower Side) connector are 0 Hz. A
      Other than above. B

    B

    CHECK BATTERY SMART UNIT (FREQUENCY) Click here

    A

  7. CHECK BATTERY SMART UNIT

    CAUTION:

    Be sure to wear insulated gloves.


    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 manual because this may cause a malfunction.

    2. Remove the front luggage compartment trim cover Click here.

    3. Disconnect the battery cooling blower assembly (for Lower Side) connector.

      Tech Tips

      Before disconnecting the connector, check that it is not loose or disconnected.

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

    5. Turn the power switch on (IG).

    6. B002BJXE01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (Battery Cooling Blower Assembly [for Lower Side])

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

      Standard
      Tester Connection Condition Condition
      m1-2 (FP1) - m1-4 (GND1) Power switch on (IG) 4.5 to 5.5 V

      Note


      • Turning the power switch on (IG) with the service grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

      • If the power switch is turned on (IG) with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.

    7. Turn the power switch off.

    8. Disconnect the cable from the negative (-) auxiliary battery terminal.

    9. Reconnect the battery cooling blower assembly (for Lower Side) connector.

    10. Install the front luggage compartment trim cover.


    OK

    REPLACE BATTERY COOLING BLOWER ASSEMBLY (for Lower Side) Click here

    NG

    REPLACE BATTERY SMART UNIT Click here

  8. CHECK BATTERY SMART UNIT (FREQUENCY)

    CAUTION:

    Be sure to wear insulated gloves.


    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 manual because this may cause a malfunction.

    2. Remove the front luggage compartment trim cover Click here.

    3. Connect the cable to the negative (-) auxiliary battery terminal.

    4. Connect the GTS to the DLC3.

    5. Turn the power switch on (IG).

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

      Note

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

    7. Enter the following menus: All Data / Cooling Fan Frequency 2.

    8. Select each air volume mode (1 to 6) in the "Driving the Battery Cooling Fan" Active Test to operate the battery cooling blower assembly.

    9. B002BZ6E01
      Text in Illustration
      *a

      Component with harness connected

      (Battery Cooling Blower Assembly [for Lower Side])
      *b

      Rear view of wire harness connector

      (to Battery Cooling Blower Assembly [for Lower Side])

      While the cooling fan is operating, compare the value in the Data List (Cooling Fan Frequency 2) with the Frequency value that was actually measured at the battery cooling blower assembly connector.

      Standard
      Tester Connection Condition Specified Condition
      m1-2 (FP1) - m1-4 (GND1) Battery cooling blower is operating Difference between the value in the Data List (Cooling Fan Frequency 2) and the actual measurement value is 10 % or less.

      Note

      Turning the power switch on (IG) with the service grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

      Tech Tips

      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.

    10. Turn the power switch off.

    11. Disconnect the cable from the negative (-) auxiliary battery terminal.

    12. Install the front luggage compartment trim cover.


    OK

    REPLACE BATTERY COOLING BLOWER ASSEMBLY (for Lower Side) Click here

    NG

    REPLACE BATTERY SMART UNIT Click here