HYBRID BATTERY SYSTEM, Diagnostic DTC:P0A9A-123

DTC Code DTC Name
P0A9A-123 Hybrid Battery Pack Cooling Fan 2 Control Circuit High

DESCRIPTION

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

DTC No. INF Code DTC Detection Condition Trouble Area
P0A9A 123 When the output voltage of the battery cooling blower assembly (No. 1) (VM) is too high compared to the target control voltage range (1 trip detection)

  • Wire harness or connector

  • Battery cooling blower assembly (No. 1)

  • Battery smart unit

  • HV battery

WIRING DIAGRAM

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

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

INSPECTION PROCEDURE

CAUTION:


  • Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly or electric vehicle charger assembly, turn the power switch off. Also, 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 and electric vehicle charger assembly.

  • When disposing of HV batteries and hybrid vehicle supply stack sub-assemblies, make sure to return them through an authorized collection agent who is capable of handling them safely. If they are returned via the manufacturer specified route, they will be returned properly and in a safe manner by an authorized collection agent.

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

  • Before returning the hybrid vehicle supply stack sub-assembly, make sure to perform 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 and hybrid vehicle supply stack sub-assemblies.

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 DTC OUTPUT (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 Click here.

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

    5. Disconnect the GTS from the DLC3.


    B

    GO TO DTC CHART (P0AFC-123) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (VOLTAGE)

    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 rear deck trim cover Click here.

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

    4. Turn the power switch on (IG).

      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.

      • If the power switch is turned on (IG) with the service plug grip removed, DTCs will be stored. If DTCs are output, clear the DTCs using the GTS.

    5. Using a service wire, connect terminals 3 (SI1) and 4 (GND1) of the battery cooling blower assembly (No. 1) connector.

    6. A0042OKE05
      Text in Illustration
      *a

      Component with harness connected

      (Battery Cooling Blower Assembly (No. 1))
      *b

      Rear view of wire harness connector

      (to Battery Cooling Blower Assembly (No. 1))

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      S18-2 (VM1) - S18-4 (GND1) Battery cooling blower is operating 5 V 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.

    7. Turn the power switch off.

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

    9. Install the rear deck trim cover.


    NG

    CHECK HARNESS AND CONNECTOR (VOLTAGE) Click here

    OK

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

    3. Turn the power switch on (IG).

    4. Remove the No. 1 hybrid vehicle battery shield panel Click here.

    5. A0042N6E02

      Disconnect the u2 and j2 battery smart unit connectors.

    6. A00442QE03
      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
      j2-10 (TBO) - Body ground Power switch on (IG) 1 V or less
      j2-20 (GBO) - Body ground Power switch on (IG) 1 V or less
      j2-9 (TB1) - Body ground Power switch on (IG) 1 V or less
      j2-19 (GB1) - Body ground Power switch on (IG) 1 V or less
      j2-8 (TB2) - Body ground Power switch on (IG) 1 V or less
      j2-18 (GB2) - Body ground Power switch on (IG) 1 V or less
      j2-7 (TB3) - Body ground Power switch on (IG) 1 V or less
      j2-17 (GB3) - Body ground Power switch on (IG) 1 V or less
      j2-6 (TB4) - Body ground Power switch on (IG) 1 V or less
      j2-16 (GB4) - Body ground Power switch on (IG) 1 V or less
      j2-5 (TB5) - Body ground Power switch on (IG) 1 V or less
      j2-15 (GB5) - Body ground Power switch on (IG) 1 V or less
      j2-2 (TC0) - Body ground Power switch on (IG) 1 V or less
      j2-12 (GC0) - Body ground Power switch on (IG) 1 V or less
      j2-1 (TC1) - Body ground Power switch on (IG) 1 V or less
      j2-11 (GC1) - Body ground Power switch on (IG) 1 V or less
      u2-21 (TB6) - Body ground Power switch on (IG) 1 V or less
      u2-9 (GB6) - Body ground Power switch on (IG) 1 V or less
      u2-22 (TB7) - Body ground Power switch on (IG) 1 V or less
      u2-10 (GB7) - Body ground Power switch on (IG) 1 V or less
      u2-13 (TB8) - Body ground Power switch on (IG) 1 V or less
      u2-1 (GB8) - Body ground Power switch on (IG) 1 V or less
      u2-14 (TB9) - Body ground Power switch on (IG) 1 V or less
      u2-2 (GB9) - Body ground Power switch on (IG) 1 V or less
      u2-15 (TB10) - Body ground Power switch on (IG) 1 V or less
      u2-3 (GB10) - Body ground Power switch on (IG) 1 V or less
      u2-17 (TB11) - Body ground Power switch on (IG) 1 V or less
      u2-5 (GB11) - Body ground Power switch on (IG) 1 V or less
      j2-2 (TC0) - Body ground Power switch on (IG) 1 V or less
      j2-12 (GC0) - Body ground Power switch on (IG) 1 V or less
      j2-1 (TC1) - Body ground Power switch on (IG) 1 V or less
      j2-11 (GC1) - Body ground Power switch on (IG) 1 V or less
      u2-23 (TC2) - Body ground Power switch on (IG) 1 V or less
      u2-11 (GC2) - Body ground Power switch on (IG) 1 V or less
      u2-24 (TC3) - Body ground Power switch on (IG) 1 V or less
      u2-12 (GC3) - Body ground Power switch on (IG) 1 V or less

    7. Turn the power switch off.

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

    9. Reconnect the u2 and j2 battery smart unit connectors.

    10. Install the No. 1 hybrid vehicle battery shield panel.


    NG

    Click here

    OK

    REPLACE BATTERY SMART UNIT Click here

  4. CHECK HARNESS AND CONNECTOR (INLET AIR TEMPERATURE SENSOR AND BATTERY 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 vehicle battery shield panel Click here.

    3. Remove the No. 1 hybrid battery intake duct Click here.

    4. Remove the rear deck trim cover Click here.

    5. Disconnect the S14 battery cooling blower assembly (No. 0) connector.

    6. A00437AE02

      Disconnect the c5 battery smart unit connector.

    7. A004002E06
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Battery Cooling Blower Assembly (No. 0))
      *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 (Check for Open)
      Tester Connection Condition Specified Condition
      S14-2 (VM0) - c5-10 (VM0) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      S14-2 (VM0) or c5-10 (VM0) - Body ground Power switch off 10 kΩ or higher

    8. Reconnect the S14 battery cooling blower assembly (No. 0) connector.

    9. Reconnect the c5 battery smart unit connector.

    10. Install the rear deck trim cover.

    11. Install the No. 1 hybrid battery intake duct.

    12. Install the No. 1 hybrid vehicle battery shield panel.


    NG

    REPAIR HARNESS OR CONNECTOR

    OK

    REPLACE HV BATTERY Click here

  5. CHECK HARNESS AND CONNECTOR (VOLTAGE)

    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 rear deck trim cover Click here.

    3. Disconnect the S18 battery cooling blower assembly (No. 1) connector.

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

    5. Turn the power switch on (IG).

    6. A00434DE22
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Battery Cooling Blower Assembly (No. 1))

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      S18-2 (VM1) - S18-4 (GND1) Power switch on (IG) 10 V or less

      Note

      If the power switch is turned on (IG) with the battery cooling blower assembly connector removed, DTCs will be stored. If DTCs are output, clear the DTCs using the GTS.

    7. Turn the power switch off.

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

    9. Reconnect the S18 battery cooling blower assembly (No. 1) connector.

    10. Install the rear deck trim cover.


    NG

    CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER ASSEMBLY (NO. 1) - BATTERY SMART UNIT) Click here

    OK

    REPLACE BATTERY COOLING BLOWER ASSEMBLY (NO. 1) Click here

  6. CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER ASSEMBLY (NO. 1) - 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 rear deck trim cover Click here.

    3. Remove the No. 1 hybrid vehicle battery shield panel Click here.

    4. Disconnect the S18 battery cooling blower assembly (No. 1) connector.

    5. A00437AE02

      Disconnect the c5 battery smart unit connector.

    6. A004002E09
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Battery Cooling Blower Assembly (No. 1))
      *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
      S18-2 (VM1) and c5-11 (VM1) - Other terminal Power switch off 10 kΩ or higher

    7. Reconnect the c5 battery smart unit connector.

    8. Reconnect the S18 battery cooling blower assembly (No. 1) connector.

    9. Install the No. 1 hybrid vehicle battery shield panel.

    10. Install the rear deck trim cover.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE BATTERY SMART UNIT Click here