HYBRID BATTERY SYSTEM, Diagnostic DTC:P0A85-123

DTC Code DTC Name
P0A85-123 Hybrid Battery Pack Cooling Fan 1 Control Circuit High

DESCRIPTION

Refer to the circuit description for DTC P0A84-123 Click here.

DTC No. INF Code DTC Detection Condition Trouble Area
P0A85 123 When the output voltage of the battery cooling blower assembly (VM) is too high compared to the target control voltage range* (1 trip detection)

  • Wire harness or connector

  • Battery cooling blower assembly

  • Battery smart unit

  • HV battery

Tech Tips

*: This DTC is stored when the battery cooling blower assembly is operating. When reproducing the DTC Detection Conditions, perform the Active Test "Driving the Battery Cooling Fan" to operate the battery cooling blower assembly.

WIRING DIAGRAM

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

Refer to the wiring diagram for DTC P0A9C-123 Click here.

CAUTION / NOTICE / HINT

CAUTION:


  • Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, 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 for 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.

  • When disposing of an HV battery, make sure to return it through an authorized collection agent who is capable of handling it safely. If the HV battery is returned via the manufacturer specified route, it will be returned properly and in a safe manner by an authorized collection agent.

  • Before returning the HV battery, make sure to perform a recovery inspection Click here

  • Make a note of the output DTCs as some of them may be necessary for recovery inspection of the HV battery.

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 (HV)


    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 Click here.

      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 HARNESS AND CONNECTOR (VOLTAGE)


    1. Remove the front seat assembly RH Click here.

    2. Turn over the front floor carpet.

    3. Connect the GTS to the DLC3.

    4. Turn the power switch on (IG).

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

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

      Note

      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.

    7. B005XH6E02
      Text in Illustration
      *a

      Component with harness connected

      (Battery Cooling Blower Assembly)
      *b

      Front view of wire harness connector

      (to Battery Cooling Blower Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      S30-2 (VM0) - S30-4 (GND0) Battery cooling blower is operating Below 5 V

      Tech Tips

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

    8. Turn the power switch off.

    9. Install the front floor carpet.

    10. Install the front seat assembly RH.


    NG

    CHECK HARNESS AND CONNECTOR (VOLTAGE) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER - 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 seat assembly RH (See Click here).

    3. Turn over the front floor carpet.

    4. Remove the No. 1 hybrid battery shield sub-assembly Click here.

    5. Disconnect the S30 battery cooling blower assembly connector.

    6. B005XEOE02

      Disconnect the L144 battery smart unit connector.

    7. B005Z0QE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Battery Cooling Blower Assembly)
      *b

      Rear view of wire harness connector

      (to Battery Smart Unit)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      S30-2 (VM0) - L144-8 (VM) Power switch off Below 1 Ω
      S30-2 (VM0) or L144-8 (VM) - Body ground Power switch off 10 kΩ or higher

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

    9. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      S30-2 (VM0) - Body ground Power switch on (IG) Below 1 V

      Note

      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.

      Tech Tips

      As there might be an intermittent malfunction, inspect the following items even if the measured voltage is as specified.

      Check that each connector between the battery voltage sensor and battery cooling blower assembly is not loose or disconnected.

    11. Turn the power switch off.

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

    13. Reconnect the L144 battery smart unit connector.

    14. Reconnect the S30 battery cooling blower assembly connector.

    15. Install the No. 1 hybrid battery shield sub-assembly.

    16. Install the front floor carpet.

    17. Install the front seat assembly RH.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR AND INLET AIR TEMPERATURE SENSOR)

    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. 1 hybrid battery shield sub-assembly Click here.

    3. B005YM9E02

      Disconnect the z24 battery smart unit connector.

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

    5. Turn the power switch on (IG).

    6. B005XCCE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Battery Smart Unit)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      z24-13 (TB0) - Body ground Power switch on (IG) 1 V or less
      z24-1 (GB0) - Body ground Power switch on (IG) 1 V or less
      z24-14 (TB1) - Body ground Power switch on (IG) 1 V or less
      z24-2 (GB1) - Body ground Power switch on (IG) 1 V or less
      z24-15 (TB2) - Body ground Power switch on (IG) 1 V or less
      z24-3 (GB2) - Body ground Power switch on (IG) 1 V or less
      z24-16 (TB3) - Body ground Power switch on (IG) 1 V or less
      z24-4 (GB3) - Body ground Power switch on (IG) 1 V or less
      z24-17 (TB4) - Body ground Power switch on (IG) 1 V or less
      z24-5 (GB4) - Body ground Power switch on (IG) 1 V or less
      z24-18 (TB5) - Body ground Power switch on (IG) 1 V or less
      z24-6 (GB5) - Body ground Power switch on (IG) 1 V or less
      z24-21 (TC0) - Body ground Power switch on (IG) 1 V or less
      z24-9 (GC0) - Body ground Power switch on (IG) 1 V or less
      z24-22 (TC1) - Body ground Power switch on (IG) 1 V or less
      z24-10 (GC1) - Body ground Power switch on (IG) 1 V or less

      Note

      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 z24 battery smart unit connector.

    10. Install the No. 1 hybrid battery shield sub-assembly.


    OK

    REPLACE BATTERY SMART UNIT Click here

    NG

  5. CHECK HARNESS AND CONNECTOR (BATTERY TEMPERATURE SENSOR AND INLET AIR TEMPERATURE SENSOR)

    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. 1 hybrid battery shield sub-assembly Click here.

    3. Check the wire harness and connectors of the battery temperature sensor and inlet air temperature sensor for abnormalities by sight and touch.

      Specified Condition
      There are no open or short circuits in the wire harness and connectors. There are no short circuits to other wire harnesses.

    4. Install the No. 1 hybrid battery shield sub-assembly.


    OK

    REPLACE HV BATTERY Click here

    NG

    REPAIR HARNESS OR CONNECTOR (BATTERY TEMPERATURE SENSOR AND INLET AIR TEMPERATURE SENSOR)

  6. CHECK HARNESS AND CONNECTOR (VOLTAGE)


    1. Remove the front seat assembly RH Click here.

    2. Turn over the front floor carpet.

    3. Disconnect the S30 battery cooling blower assembly connector.

    4. Turn the power switch on (IG).

    5. B005XL6E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Battery Cooling Blower Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      S30-2 (VM0) - S30-4 (GND0) Power switch on (IG) Below 5 V

      Note

      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.

    6. Turn the power switch off.

    7. Reconnect the S30 battery cooling blower assembly connector.

    8. Install the front floor carpet.

    9. Install the front seat assembly RH.


    OK

    REPLACE BATTERY COOLING BLOWER ASSEMBLY Click here

    NG

  7. CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER - 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 seat assembly RH Click here.

    3. Turn over the front floor carpet.

    4. Disconnect the S30 battery cooling blower assembly connector.

    5. Remove the No. 1 hybrid battery shield sub-assembly Click here.

    6. B005YXRE02

      Disconnect the L144 battery smart unit connector.

    7. B005YZUE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Battery Cooling Blower Assembly)
      *b

      Rear view of wire harness connector

      (to Battery Smart Unit)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      S30-2 (VM0) and L144-8 (VM) - Other terminal Power switch off 10 kΩ or higher

    8. Reconnect the L144 battery smart unit connector.

    9. Install the No. 1 hybrid battery shield sub-assembly.

    10. Reconnect the S30 battery cooling blower assembly connector.

    11. Install the front floor carpet.

    12. Install the front seat assembly RH.


    OK

    REPLACE BATTERY SMART UNIT Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR