HYBRID BATTERY SYSTEM, Diagnostic DTC:P0A9C-123, P0AC6-123

DTC Code DTC Name
P0A9C-123 Hybrid Battery Temperature Sensor "A" Range / Performance
P0AC6-123 Hybrid Battery Temperature Sensor "B" Range / Performance

DESCRIPTION

Refer to the description for DTC P0A9D-123 Click here.

DTC No. INF Code DTC Detection Condition Trouble Area

P0A9C

P0AC6

 123 When the battery temperature sensor performance is abnormal (1 trip detection/2 trip detection)

  • HV battery

  • Battery smart unit

  • Harness or connector

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0A9D-123 Click here.

CAUTION / NOTICE / HINT

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 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

    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.

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 INSTALLATION OF BATTERY 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 upper hybrid battery cover sub-assembly Click here.

    3. A000Q3IE02
      Text in Illustration
      *1 Battery Temperature Sensor 0
      *2 Battery Temperature Sensor 1

      Visually check the installation condition of the relevant battery temperature sensor.

      Standard Condition
      The battery temperature sensor is installed in the correct location with the correct orientation and its claws are engaged securely.
      Result
      Result Proceed to
      The battery temperature sensor is installed in the correct location with the correct orientation and its claws are engaged securely. A
      Claws are damaged. B
      Battery temperature sensor is not installed correctly, but claws are not damaged. C

      Note

      Do not use a stick or similar object to push on the sensors when inspecting them. Doing so may result in damage to the sensors.

    4. Install the upper hybrid battery cover sub-assembly.


    B

    REPLACE HV BATTERY Click here

    C

    INSTALL PARTS CORRECTLY

    A

  3. 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. 4 hybrid vehicle battery carrier bracket sub-assembly Click here.

    3. Disconnect connectors from the battery smart unit.

    4. A000NDHE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Battery Smart Unit)

      Measure the resistance according to the values in the table below.

      Tester Connection
      Tester Connection Battery Temperature Sensor No.
      z16-7 (TB0) - z16-17 (GB0) 0
      z16-6 (TB1) - z16-16 (GB1) 1
      Standard Resistance
      Thermistor Temperature Switch 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. A000NJ1E02
      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.

      Standard Resistance
      Tester Connection Switch Condition Standard Resistance
      z16-7 (TB0) - m4-1 (IGCT) Power switch off 10 kΩ or higher
      z16-7 (TB0) - m4-5 (GND) Power switch off 10 kΩ or higher
      z16-17 (GB0) - m4-1 (IGCT) Power switch off 10 kΩ or higher
      z16-17 (GB0) - m4-5 (GND) Power switch off 10 kΩ or higher
      z16-6 (TB1) - m4-1 (IGCT) Power switch off 10 kΩ or higher
      z16-6 (TB1) - m4-5 (GND) Power switch off 10 kΩ or higher
      z16-16 (GB1) - m4-1 (IGCT) Power switch off 10 kΩ or higher
      z16-16 (GB1) - m4-5 (GND) Power switch off 10 kΩ or higher

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

      Standard Resistance
      Tester Connection Switch Condition Standard Resistance
      z16-1 (TC0) - m4-1 (IGCT) Power switch off 10 kΩ or higher
      z16-1 (TC0) - m4-5 (GND) Power switch off 10 kΩ or higher
      z16-11 (GC0) - m4-1 (IGCT) Power switch off 10 kΩ or higher
      z16-11 (GC0) - m4-5 (GND) Power switch off 10 kΩ or higher

    7. Connect the battery smart unit connectors.

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


    OK

    REPLACE BATTERY SMART UNIT Click here

    NG

  4. CHECK HARNESS AND CONNECTOR (BATTERY 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. 4 hybrid vehicle battery carrier bracket sub-assembly Click here.

    3. 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.

      Tech Tips

      Because the battery harness is not available as a supply part, if the harness cannot be repaired, replace the HV battery assembly.

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


    OK

    REPLACE HV BATTERY Click here

    NG

    REPAIR HARNESS OR CONNECTOR (BATTERY TEMPERATURE SENSOR)