HYBRID BATTERY SYSTEM, Diagnostic DTC:P0AAE-123, P0AAF-123, P0AB3-123, P0AB4-123, P3103-123

DTC Code DTC Name
P0AAE-123 Hybrid Battery Pack Air Temperature Sensor "A" Circuit Low
P0AAF-123 Hybrid Battery Pack Air Temperature Sensor "A" Circuit High
P0AB3-123 Hybrid Battery Pack Air Temperature Sensor "B" Circuit Low
P0AB4-123 Hybrid Battery Pack Air Temperature Sensor "B" Circuit High
P3103-123 EV Battery Pack Air Temperature Sensor "A" / "B" Correlation

DESCRIPTION


DTC No. INF Code DTC Detection Condition Trouble Area
P0AAE 123 When the temperature indicated by the inlet air temperature sensor is lower than a predetermined limit (open circuit) or is higher than a predetermined limit (short circuit)(1 trip detection).

  • HV BATTERY

  • Battery smart unit

  • Wire harness or connector

  • Hybrid battery junction block assembly
P0AAF
P0AB3
P0AB4
P3103 The intake air temperature sensor value exceeds the upper or lower thresholds.

Tech Tips

After confirming that a DTC is output, use the GTS to check "Inhaling Air Temp" in the HV ECU data list.

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

WIRING DIAGRAM

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

Refer to the wiring diagram for DTC P0ABF-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.

Tech Tips


  • DTC P3103-123 may be stored if a heat generating object is placed near the HV battery in the console box assembly. In this case, check for DTCs after removing the object.

  • If a short to +B occurs in the battery temperature sensor, battery current sensor or intake air temperature sensor, the following DTCs may be output simultaneously.

DTC No. Relevant Diagnosis
P0ABF-123 Hybrid Battery Pack Current Sensor Circuit
P0A9E-123 Hybrid Battery Temperature Sensor "A" Circuit High
P0AC8-123 Hybrid Battery Temperature Sensor "B" Circuit High
P0ACD-123 Hybrid Battery Temperature Sensor "C" Circuit High
P0AEB-123 Hybrid Battery Temperature Sensor "D" Circuit High
P0BC5-123 Hybrid Battery Temperature Sensor "E" Circuit High
P0C36-123 Hybrid Battery Temperature Sensor "F" Circuit High
P0AAF-123 Hybrid Battery Pack Air Temperature Sensor "A" Circuit High
P0AB4-123 Hybrid Battery Pack Air Temperature Sensor "B" Circuit High

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 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. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Enter the following menus: Powertrain / Hybrid Control / Data List / Inhaling Air Temp.

      Tech Tips

      Compare the temperature of the 2 intake air temperature sensors to determine the sensor with the malfunction (Inhaling Air Temp).


    NEXT

  3. CHECK CONNECTOR CONNECTION CONDITION (INLET AIR TEMPERATURE SENSOR)

    CAUTION:

    Be sure to wear insulated gloves and protective goggles.


    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. Remove the No. 4 intake duct Click here.

    4. A005BNGE02

      Check the connections of the z24 connectors of the battery smart unit.

      OK
      The connectors are connected securely and there are no contact problems.
      Result
      Result Proceed to
      NG B
      OK Go to next step

    5. Visually check the installation condition of the inlet air temperature sensor.

      OK
      The inlet air temperature sensor is installed in the correct location and its claws are engaged securely.
      Result
      Result Proceed to
      The inlet air temperature sensor is installed in the correct location and its claws are engaged securely A
      Inlet air temperature sensor is not installed correctly or claws are damaged. C

    6. Install the No. 4 intake duct.

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


    B

    CONNECT SECURELY

    C

    REPLACE HV BATTERY Click here

    A

  4. CHECK HV BATTERY (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 battery shield sub-assembly Click here.

    3. A005BNGE02

      Disconnect the z24 battery smart unit connector.

    4. A005DYBE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Battery Smart Unit)

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

      Tester Connection
      Tester Connection Inlet Air Temperature Sensor No.
      z24-21 (TC0) - z24-9 (GC0) 0
      z24-22 (TC1) - z24-10 (GC1) 1
      Standard Resistance
      Condition Condition Specified Condition
      0 °C (32 °F) Power switch off 26.7 to 27.8 kΩ
      25 °C (77 °F) Power switch off 9.9 to 10.1 kΩ
      40 °C (104 °F) Power switch off 5.73 to 5.92 kΩ

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z24-21 (TC0) - Body ground and other terminals Power switch off 10 kΩ or higher
      z24-9 (GC0) - Body ground and other terminals Power switch off 10 kΩ or higher
      z24-22 (TC1) - Body ground and other terminals Power switch off 10 kΩ or higher
      z24-10 (GC1) - Body ground and other terminals Power switch off 10 kΩ or higher
      z24-13 (TB0) - Body ground and other terminals Power switch off 10 kΩ or higher
      z24-1 (GB0) - Body ground and other terminals Power switch off 10 kΩ or higher
      z24-14 (TB1) - Body ground and other terminals Power switch off 10 kΩ or higher
      z24-2 (GB1) - Body ground and other terminals Power switch off 10 kΩ or higher
      z24-15 (TB2) - Body ground and other terminals Power switch off 10 kΩ or higher
      z24-3 (GB2) - Body ground and other terminals Power switch off 10 kΩ or higher
      z24-16 (TB3) - Body ground and other terminals Power switch off 10 kΩ or higher
      z24-4 (GB3) - Body ground and other terminals Power switch off 10 kΩ or higher
      z24-17 (TB4) - Body ground and other terminals Power switch off 10 kΩ or higher
      z24-5 (GB4) - Body ground and other terminals Power switch off 10 kΩ or higher
      z24-18 (TB5) - Body ground and other terminals Power switch off 10 kΩ or higher
      z24-6 (GB5) - Body ground and other terminals Power switch off 10 kΩ or higher

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

    7. Turn the power switch on (IG).

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

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

    9. Turn the power switch off.

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

    11. Reconnect the z24 battery smart unit connector.

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


    NG

    REPLACE HV BATTERY Click here

    OK

  5. CHECK BATTERY SMART UNIT (VIB VOLTAGE)

    Note

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

    4. Turn the power switch on (IG).

      Note

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

    5. A005B5ZE02
      Text in Illustration
      *a

      Component with harness connected

      (Battery Smart Unit)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      z24-24 (VIB) - z24-12 (GIB) Power switch on (IG) 4.6 to 5.4 V

    6. Turn the power switch off.

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

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


    OK

    REPLACE BATTERY SMART UNIT Click here

    NG

  6. CHECK HYBRID BATTERY JUNCTION BLOCK ASSEMBLY (BATTERY CURRENT 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. 2 hybrid battery shield sub-assembly Click here.

    3. Disconnect the z25 hybrid battery junction block assembly connector.

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

    5. Turn the power switch on (IG).

      Note

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

    6. A005CDGE01
      Text in Illustration
      *a

      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 Condition Specified Condition
      z25-1 (VIB) - z25-3 (GIB) Power switch on (IG) 4.6 to 5.4 V

    7. Turn the power switch off.

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

    9. Reconnect the z25 hybrid battery junction block assembly connector.

    10. Install the No. 2 hybrid battery shield sub-assembly.


    OK

    REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY Click here

    NG

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

    Note

    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. 2 hybrid battery shield sub-assembly Click here.

    3. Disconnect the z25 hybrid battery junction block assembly connector.

    4. A005CXYE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Battery Smart Unit)
      *b

      Front view of wire harness connector

      (to Hybrid Battery Junction Block Assembly)

      Disconnect the z24 battery smart unit connector.

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

      A0059XWE01
      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      z24-11 (IB1) - z25- 2 (IB1) Power switch off Below 1 Ω
      z24-12 (GIB) - z25- 3 (GIB) Power switch off Below 1 Ω
      z24-23 (IB0) - z25- 4 (IB0) Power switch off Below 1 Ω
      z24-24 (VIB) - z25- 1 (VIB) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      z24-11 (IB1) or z25- 2 (IB1) - Body ground and other terminals Power switch off 10 kΩ or higher
      z24-12 (GIB) or z25- 3 (GIB) - Body ground and other terminals Power switch off 10 kΩ or higher
      z24-23 (IB0) or z25- 4 (IB0) - Body ground and other terminals Power switch off 10 kΩ or higher
      z24-24 (VIB) or z25- 1 (VIB) - Body ground and other terminals Power switch off 10 kΩ or higher

    6. Reconnect the z25 hybrid battery junction block assembly connector.

    7. Reconnect the z24 battery smart unit connector.

    8. Install the No. 2 hybrid battery shield sub-assembly.


    OK

    REPLACE BATTERY SMART UNIT Click here

    NG

    REPAIR HARNESS OR CONNECTOR OR REPLACE HV BATTERY