HYBRID CONTROL SYSTEM, Diagnostic DTC:P0AFC-150

DTC Code DTC Name
P0AFC-150 Hybrid Battery Pack Sensor Module

DESCRIPTION

The power management control ECU alerts the driver and performs fail-safe control based on error signals sent from the battery voltage sensor.

DTC NO. DTC Detection Condition Trouble Area
P0AFC-150

Abnormal battery voltage sensor power source voltage

Power source voltage of the battery voltage sensor drops during precharge.

(1 trip detection logic)

  • Battery voltage sensor

  • Wire harness or connector
Related Data List
DTC No. Data List
P0AFC-150

  • Auxiliary Battery Vol (Battery voltage sensor power source voltage)

  • +B

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0AFC-123 Click here.

INSPECTION PROCEDURE

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.

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

After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. Turn the power switch on (READY) and wait for 15 seconds or more.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (IGCT 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 front luggage compartment trim cover Click here.

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

    4. Turn the power switch on (IG).

    5. A01FVD3E03
      Text in Illustration
      *a

      Component with harness connected

      (No. 2 Hybrid Battery Pack Wire Connector)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      mT1-10 (IGCT) - mT1-11 (GND) Power switch on (IG) 11 to 14 V

      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.

    6. Turn the power switch off.

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

    8. Install the front luggage compartment trim cover.


    NG

    Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (NO. 2 HYBRID BATTERY PACK WIRE CONNECTOR - BATTERY VOLTAGE 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 upper hybrid battery cover sub-assembly Click here.

    3. Disconnect m5 connector from the battery voltage sensor.

    4. Disconnect mT1 connector from the No. 2 hybrid battery pack wire connector.

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

      A01FT8VE03
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Battery Voltage Sensor)

      		 *b

      Rear view of wire harness connector

      (to No. 2 Hybrid Battery Pack Wire Connector)
      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      m5-3 (IGCT) - mT1-10 (IGCT) Power switch off Below 1 Ω

      Note

      When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the holder.

    6. Connect the mT1 No. 2 hybrid battery pack wire connector.

    7. Connect the m5 battery voltage sensor connector.

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


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE BATTERY VOLTAGE SENSOR

  3. CHECK HARNESS AND CONNECTOR (NO. 2 HYBRID BATTERY PACK WIRE CONNECTOR - BODY GROUND)

    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 luggage compartment trim cover Click here.

    3. Disconnect mT1 connector from the No. 2 hybrid battery pack wire connector.

    4. A01FR75E01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Hybrid Battery Pack Wire Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      mT1-11 (GND) - Body ground Power switch off Below 1 Ω

    5. Connect mT1 the No. 2 hybrid battery pack wire connector.

    6. Install the front luggage compartment trim cover.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (NO. 2 HYBRID BATTERY PACK WIRE CONNECTOR - BATTERY VOLTAGE 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 upper hybrid battery cover sub-assembly Click here.

    3. Disconnect m5 connector from the battery voltage sensor.

    4. Disconnect mT1 connector from the No. 2 hybrid battery pack wire connector.

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

      A01FT8VE04
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Battery Voltage Sensor)

      		 *b

      Rear view of wire harness connector

      (to No. 2 Hybrid Battery Pack Wire Connector)
      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      m5-6 (GND) - mT1-11 (GND) Power switch off Below 1 Ω
      m5-3 (IGCT) or mT1-10 (IGCT) - Body ground and other terminals Power switch off 10 kΩ or higher

      Note

      When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the holder.

    6. Connect the mT1 No. 2 hybrid battery pack wire connector.

    7. Connect the m5 battery voltage sensor connector.

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


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 2 HYBRID BATTERY PACK WIRE CONNECTOR - BATTERY VOLTAGE SENSOR)

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (IGCT NO. 3 FUSE - NO. 2 HYBRID BATTERY PACK WIRE CONNECTOR)