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 smart unit.

DTC NO. INF Code DTC Detection Condition Trouble Area
P0AFC 150

Abnormal battery smart unit power source voltage:

Power source voltage of the battery smart unit drops during precharge.

(1 trip detection logic)

  • Battery smart unit

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

  • Auxiliary Battery Vol (Battery smart unit power source voltage)

  • +B

MONITOR DESCRIPTION

When the power management control ECU detects a low power supply voltage for the battery smart unit while pre-charge is occurring, it determines that there is a malfunction in the battery smart unit circuit. If the power management control ECU detects a malfunction, it will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs P0AFC (INF 150): Power supply circuit malfunction
Required sensors / components Battery smart unit
Frequency of operation Continuous
Duration TMC's intellectual property
MIL operation 1 driving cycle
Sequence of operation None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not present TMC's intellectual property
Other conditions belong to TMC's intellectual property -

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property -

COMPONENT OPERATING RANGE

Power management control ECU DTC P0AFC (INF 150) is not detected

CONFIRMATION DRIVING PATTERN


  1. Connect the Techstream to the DLC3.

  2. Turn the power switch on (IG) and turn the Techstream on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the power switch off and wait for 30 seconds or more.

  5. Turn the power switch on (READY).

  6. Wait for 15 seconds or more.

  7. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

  8. Read the current DTCs.

    Tech Tips


    • If a current DTC is output, the system is malfunctioning.

    • If current DTCs are not output, perform the following steps to check for permanent DTCs.

  9. Check that the permanent DTCs are cleared.

  10. If the permanent DTCs are not cleared, perform the universal trip, and then check for permanent DTCs again.

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 rear side seatback assembly LH Click here.

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

    4. Turn the power switch on (IG).

    5. A01I2VAE01
      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 Switch Condition Specified Condition
      N18-3 (IGCT) - N18-6 (GND) Power switch on (IG) 11 to 14 V

      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. Turn the power switch off.

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

    8. Install the rear side seatback assembly LH.


    NG

    Click here

    OK

    REPLACE BATTERY SMART UNIT Click here

  2. CHECK HARNESS AND CONNECTOR (GND - 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 rear side seatback assembly LH Click here.

    3. A01I2VAE02
      Text in Illustration
      *a

      Component with harness connected

      (Battery Smart Unit)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      N18-6 (GND) - Body ground Power switch off Below 1 Ω

    4. Install the rear side seatback assembly LH.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (GND - BODY GROUND)

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (BATT VL SSR FUSE - BATTERY SMART UNIT)