HYBRID BATTERY SYSTEM, Diagnostic DTC:P0A9D-123, P0A9E-123, P0AC7-123, P0AC8-123, P0ACC-123, P0ACD-123, P0AEA-123, P0AEB-123, P0BC4-123, P0BC5-123, P0C35-123, P0C36-123

DTC Code DTC Name
P0A9D-123 Hybrid Battery Temperature Sensor "A" Circuit Low
P0A9E-123 Hybrid Battery Temperature Sensor "A" Circuit High
P0AC7-123 Hybrid Battery Temperature Sensor "B" Circuit Low
P0AC8-123 Hybrid Battery Temperature Sensor "B" Circuit High
P0ACC-123 Hybrid Battery Temperature Sensor "C" Circuit Low
P0ACD-123 Hybrid Battery Temperature Sensor "C" Circuit High
P0AEA-123 Hybrid Battery Temperature Sensor "D" Circuit Low
P0AEB-123 Hybrid Battery Temperature Sensor "D" Circuit High
P0BC4-123 Hybrid Battery Temperature Sensor "E" Circuit Low
P0BC5-123 Hybrid Battery Temperature Sensor "E" Circuit High
P0C35-123 Hybrid Battery Temperature Sensor "F" Circuit Low
P0C36-123 Hybrid Battery Temperature Sensor "F" Circuit High

DESCRIPTION


DTC No. DTC Detection Condition Trouble Area

P0A9D-123

P0A9E-123

P0AC7-123

P0AC8-123

P0ACC-123

P0ACD-123

P0AEA-123

P0AEB-123

P0BC4-123

P0BC5-123

P0C35-123

P0C36-123

 When the temperature of the battery temperature sensor is less than the standard value (open) or higher than the standard value (shorted) (1 trip detection).

  • HV battery assembly

  • Battery smart unit

  • Wire harness or connector

  • Hybrid battery junction block assembly

Tech Tips

After confirming that a DTC is output, use the intelligent tester to check "Temp of BATT TB 1 to 6" in the hybrid vehicle control system ECU data list.

Temperature Displayed Malfunction
Below -45°C (-49°F) Open or +B short circuit
95°C (203°F) or more GND short circuit

INSPECTION PROCEDURE

CAUTION:


  • Before inspecting the high-voltage system, take safety precautions to prevent electrical shocks, such as wearing insulated gloves and removing the service plug grip. 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 disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals.

    Tech Tips

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

Note

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 for the time specified in the following table before disconnecting the cable from the negative (-) battery terminal.

Waiting Time before Disconnecting Cable from Negative (-) Battery Terminal
Specification Waiting Time
w/o Telematics transceiver 60 sec.
w/ Telematics transceiver 120 sec.

PROCEDURE


  1. CHECK DTC OUTPUT (DTC P0AFC-123 IS OUTPUT)


    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

  2. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Data List / Temp of Batt TB 1 to 6

      Tech Tips

      Compare the temperature of the 6 battery temperature sensors to determine the sensor with the malfunction (Temp of Batt TB1 to TB6).


    NEXT

  3. CHECK CONNECTOR CONNECTION CONDITION

    CAUTION:

    Be sure to wear insulated gloves and protective goggles.


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

    2. 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.

    3. Remove the battery cover Click here.

    4. A01NFZCE02
      Text in Illustration
      *1 Battery Smart Unit

      Check the connections of the z29 connector of the battery smart unit.

      OK
      The connectors are connected securely and there are no contact problems.

    5. Install the battery cover Click here.

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


    NG

    CONNECT SECURELY

    OK

  4. CHECK HV BATTERY ASSEMBLY (BATTERY TEMPERATURE SENSOR)

    CAUTION:

    Be sure to wear insulated gloves and protective goggles.


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

    2. 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.

    3. Remove the battery cover Click here.

    4. Remove the battery smart unit.

      Tech Tips

      Disconnect the z29 and z30 connectors of the battery smart unit.

    5. A01NFH2E01
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to Battery Smart Unit)

      Measure the resistance of the circuit for the malfunctioning sensor (battery temperature sensor 0 to 5).

      Tester Connection
      Tester Connection Battery Temperature Sensor No.
      z29-7 (TB0) - z29-17 (GB0) 0
      z29-6 (TB1) - z29-16 (GB1) 1
      z29-5 (TB2) - z29-15 (GB2) 2
      z29-4 (TB3) - z29-14 (GB3) 3
      z29-3 (TB4) - z29-13 (GB4) 4
      z29-2 (TB5) - z29-12 (GB5) 5
      Standard Resistance
      Thermistor Temperature Switch Condition Specified Condition
      0°C (32°F) Power switch off 27.3 to 28.4 kΩ
      25°C (77°F) Power switch off 9.9 to 10.1 kΩ
      40°C (104°F) Power switch off 5.72 to 5.90 kΩ
    6. A01NDL9E01
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to Battery Smart Unit)

      Measure the resistance according to the conditions and value(s) in the tables below.

      Standard Resistance
      Tester Connection Switch Condition Standard Resistance
      z29-7 (TB0) - z30-1 (IGCT) Power switch off 10 kΩ or more
      z29-7 (TB0) - z30-5 (GND) Power switch off 10 kΩ or more
      z29-17 (GB0) - z30-1 (IGCT) Power switch off 10 kΩ or more
      z29-17 (GB0) - z30-5 (GND) Power switch off 10 kΩ or more
      z29-6 (TB1) - z30-1 (IGCT) Power switch off 10 kΩ or more
      z29-6 (TB1) - z30-5 (GND) Power switch off 10 kΩ or more
      z29-16 (GB1) - z30-1 (IGCT) Power switch off 10 kΩ or more
      z29-16 (GB1) - z30-5 (GND) Power switch off 10 kΩ or more
      z29-5 (TB2) - z30-1 (IGCT) Power switch off 10 kΩ or more
      z29-5 (TB2) - z30-5 (GND) Power switch off 10 kΩ or more
      z29-15 (GB2) - z30-1 (IGCT) Power switch off 10 kΩ or more
      z29-15 (GB2) - z30-5 (GND) Power switch off 10 kΩ or more
      z29-4 (TB3) - z30-1 (IGCT) Power switch off 10 kΩ or more
      z29-4 (TB3) - z30-5 (GND) Power switch off 10 kΩ or more
      z29-14 (GB3) - z30-1 (IGCT) Power switch off 10 kΩ or more
      z29-14 (GB3) - z30-5 (GND) Power switch off 10 kΩ or more
      z29-3 (TB4) - z30-1 (IGCT) Power switch off 10 kΩ or more
      z29-3 (TB4) - z30-5 (GND) Power switch off 10 kΩ or more
      z29-13 (GB4) - z30-1 (IGCT) Power switch off 10 kΩ or more
      z29-13 (GB4) - z30-5 (GND) Power switch off 10 kΩ or more
      z29-2 (TB5) - z30-1 (IGCT) Power switch off 10 kΩ or more
      z29-2 (TB5) - z30-5 (GND) Power switch off 10 kΩ or more
      z29-12 (GB5) - z30-1 (IGCT) Power switch off 10 kΩ or more
      z29-12 (GB5) - z30-5 (GND) Power switch off 10 kΩ or more

    7. Install the battery smart unit Click here.

    8. Install the battery cover.

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


    NG

    Click here

    OK

  5. CHECK BATTERY SMART UNIT

    CAUTION:

    Be sure to wear insulated gloves and protective goggles.


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

    2. 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.

    3. Remove the battery cover Click here.

    4. Remove the battery smart unit

      Tech Tips

      Do not disconnect the battery smart unit connector.

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

    6. Turn the power switch on (IG).

    7. A01NFZCE01
      Text in Illustration
      *1

      Component with harness connected

      (Battery Smart Unit)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      z29-10 (VIB) - z29-20 (GIB) Power switch on (IG) 4.6 to 5.4V

      Tech Tips

      Turning the power switch on (IG) with the service plug grip removed causes an interlock switch system DTC (P0A0D-350) to be set. Use the intelligent tester to clear the DTCs Click here.

    8. Turn the power switch off.

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

    10. Install the battery smart unit Click here.

    11. Install the battery cover.

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


    NG

    Click here

    OK

    REPLACE BATTERY SMART UNIT Click here

  6. CHECK HYBRID BATTERY JUNCTION BLOCK ASSEMBLY

    CAUTION:

    Be sure to wear insulated gloves and protective goggles.


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

    2. 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.

    3. Remove the battery cover Click here.

    4. A01NFQ0

      Disconnect the z33 battery current sensor connector from the hybrid battery junction block assembly.

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

    6. Turn the power switch on (IG).

    7. A01NDG1E07
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Hybrid Battery Junction Block Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      z33-1 (VIB) - z33-2 (GIB) Power switch on (IG) 4.6 to 5.4 V

      Note

      Turning the power switch on (IG) with the HV relay assembly (battery current sensor) connector disconnected causes DTC P0AC2-123 to be set. Use the intelligent tester to clear the DTCs Click here.

    8. Connect the z33 battery current sensor connector to the hybrid battery junction block assembly.

    9. Install the battery cover Click here.


    NG

    Click here

    OK

    REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY Click here

  7. CHECK HARNESS AND CONNECTOR (BATTERY SMART UNIT - HYBRID BATTERY JUNCTION BLOCK ASSEMBLY)

    CAUTION:

    Be sure to wear insulated gloves and protective goggles.


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

    2. 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.

    3. Remove the battery cover Click here.

    4. Remove the battery smart unit.

      Tech Tips

      Disconnect only the z29 connector of the battery smart unit.

    5. A01NFQ0

      Disconnect the z33 battery current sensor connector from the hybrid battery junction block assembly .

    6. A01NDCSE01
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to Battery Smart Unit)
      *2

      Front view of wire harness connector

      (to Hybrid Battery Junction Block Assembly)

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

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      z29-9 (IB) - z33-3 (IB) Power switch off Below 1 Ω
      z29-20 (GIB) - z33-2 (GIB) Power switch off Below 1 Ω
      z29-10 (VIB) - z33-1 (VIB) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      z29-9 (IB) or z33-3 (IB) - Body ground and other terminals Power switch off 10 kΩ or higher
      z29-20 (GIB) or z33-2 (GIB) - Body ground and other terminals Power switch off 10 kΩ or higher
      z29-10 (VIB) or z33-1 (VIB) - Body ground and other terminals Power switch off 10 kΩ or higher

    7. Connect the z33 battery current sensor connector to the hybrid battery junction block assembly.

    8. Install the battery smart unit Click here.

    9. Install the battery cover.

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


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE BATTERY SMART UNIT Click here

  8. CHECK HARNESS AND CONNECTOR (BATTERY TEMPERATURE SENSOR)

    CAUTION:

    Be sure to wear insulated gloves and protective goggles.


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

    2. 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.

    3. Remove the battery cover Click here.

    4. Remove the group of HV battery modules which includes the malfunctioning battery temperature sensor.

    5. Turn the group of HV battery modules over. Check the wire harness and connectors of the battery 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.

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE HV BATTERY ASSEMBLY Click here