HYBRID BATTERY SYSTEM, Diagnostic DTC:P0A97-123

DTC Code DTC Name
P0A97-123 Hybrid Battery Pack Cooling Fan 2 Performance / Stuck OFF

DESCRIPTION

Refer to the description for DTC P0A99-123 Click here.

DTC Code DTC Detection Condition Trouble Area
P0A97-123

  • The battery cooling blower assembly (for lower side) speed is not within the specified range calculated by the hybrid vehicle control ECU. (1 trip detection)

  • A difference between the actual battery temperature and the battery temperature estimated based on the cooling capacity of the battery blower assembly. (2 trip detection)

  • Battery cooling blower assembly (for lower side)

  • Battery smart unit

  • Hybrid vehicle control ECU

  • HV battery intake duct

  • Harness or connector

  • Air conditioning system

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0A99-123 Click here.

INSPECTION PROCEDURE

PROCEDURE


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


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

    4. Check if DTCs are output.

      Result
      Result Proceed to
      P0AFC-123 is not output A
      P0AFC-123 is output. B

    B

    GO TO DTC (P0AFC-123) Click here

    A

  2. CHECK REAR COOLING UNIT


    1. A01H1GN

      Inspect rear air conditioning blower operation. (w/ Rear Cooler)


      1. Remove the air duct RH.

        Tech Tips

        For the removal and installation procedures related to the air duct RH, Click here.

      2. Check if cool air comes out from the hole shown in the illustration when the rear air conditioning blower is operated using the rear air conditioning control panel.

        OK
        Cool air comes out.

    2. Inspect rear air conditioning blower operation. (w/o Rear Cooler)


      1. Connect the intelligent tester to the DLC3.

      2. Turn the power switch on (IG).

      3. Select the following menu items: Body / Air conditioner / Utility / Rear Cooling Unit Check / Next.

      4. Remove the screw and 2 clips.

        A01GX1T

      5. Insert a screwdriver at the position shown in the illustration and make a gap between the parts.

        A01GZEY

        Tech Tips

        Do not widen the gap excessively to avoid damaging the rear cooling unit.

      6. Check if cool air comes out from the gap shown in the illustration when the rear air conditioning is operated using the "Rear Cooling Unit Check" function of the intelligent tester.

        OK
        Cool air comes out.

    NG

    GO TO AIR CONDITIONING SYSTEM Click here

    OK

  3. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (HV BATTERY COOL DOWN SERVO MOTOR)


    1. A01GW5LE01

      Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Select the following menu items: Body / Air Conditioner / Active Test / Batt Cool Down Servo Targ Pls.

    4. Activate the HV battery cool down servo motor.

      OK
      The HV battery cool down servo motor moves to the interior intake air position or A/C intake air position as commanded.

    NG

    GO TO AIR CONDITIONING SYSTEM Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (NO. 1 BATTERY PACK WIRE CONNECTOR [A AND B SIDE] - HYBRID VEHICLE CONTROL ECU AND BODY GROUND)


    1. Disconnect the zR3 No. 1 battery pack wire connector.

      A01GZLJE13

      Tech Tips

      For the removal and installation procedures related to the No. 1 battery pack wire connector inspection, Click here.

    2. Disconnect the A77 hybrid vehicle control ECU connector.

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

      Standard Resistance
      A Side
      Tester Connection Switch Condition Specified Condition
      zR3-17 (SI1) or A77-35 (SI1) - Body ground Power switch off 10 kΩ or higher
      B Side
      Tester Connection Switch Condition Specified Condition
      zR3-17 (SI1) - Body ground Power switch off 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT HYBRID VEHICLE CONTROL ECU (GND SHORT)


    1. A01GZH4E14

      Connect connector A77 to the hybrid vehicle control ECU.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A77-35 (SI1) - E58-7 (GND1) Power switch off 10 kΩ or higher
      A77-35 (SI1) - E58-6 (GND2) Power switch off 10 kΩ or higher
      A77-35 (SI1) - A77-7 (E1) Power switch off 10 kΩ or higher
      A77-35 (SI1) - A77-6 (E12) Power switch off 10 kΩ or higher
      A77-35 (SI1) - A76-6 (EC) Power switch off 10 kΩ or higher
      A77-35 (SI1) - A76-5 (E2) Power switch off 10 kΩ or higher
      E58-7 (GND1) - Body ground Power switch off Below 1 Ω

    NG

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    OK

  6. CHECK DUCT AND BLOWER

    CAUTION:

    Be sure to wear insulated gloves.


    1. Remove the HV battery Click here.

      A01GXL7E01

    2. Check if the HV battery intake ducts and battery cooling blower assembly (for lower side) are disconnected, damaged, or clogged with foreign objects.

      Tech Tips

      For the removal and installation procedures related to the HV battery intake duct and battery cooling blower assembly (for lower side), Click here.

      OK
      The ducts and blower are not disconnected, damaged, or clogged with foreign objects.

    NG

    REPAIR OR REPLACE DUCT OR BLOWER Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (NO. 1 BATTERY PACK WIRE CONNECTOR [B SIDE] - BATTERY COOLING BLOWER [FOR LOWER SIDE])

    CAUTION:

    Be sure to wear insulated gloves.


    1. A01GZ57E04

      Disconnect the z77 battery cooling blower assembly (for lower side) connector.

      Tech Tips

      For the removal and installation procedures related to the battery cooling blower assembly (for lower side) connector inspection, Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      zR3-17 (SI1) - z77-3 (SI1) Always Below 1 Ω
      zR3-18 (GND1) - z77-4 (GND1) Always Below 1 Ω
      zR3-17 (SI1) - z77-4 (GND1) Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK BATTERY COOLING BLOWER ASSEMBLY (for Lower Side) (VM1 VOLTAGE)

    CAUTION:

    Be sure to wear insulated gloves.


    1. A01H0BTE01

      Place the HV battery in the vehicle so that measurements can be made at the battery cooling blower assembly (for lower side) connector.

      Note

      Make sure all the covers are installed to the HV battery when placing it in the vehicle, and then remove the covers again after the HV battery is in place.

      Tech Tips


      • Follow the installation procedures to the point where the HV battery is set in the vehicle Click here.

      • Do not install the service plug grip.

    2. Reconnect all the connectors that were disconnected when the HV battery was removed.

    3. Connect the intelligent tester to the DLC3.

    4. Turn the power switch on (IG).

    5. Select the following menu items: Powertrain / Hybrid Control / Data List / VMF Fan Motor Voltage 2.

    6. Using a service wire, connect terminals z77-3 (SI1) and z77-4 (GND1) of the battery cooling blower assembly (for lower side) connector.

      CAUTION:

      Do not touch the fan while it is operating.

    7. While the battery cooling blower assembly (for lower side) is operating, compare the value in the data list ("VMF Fan Motor Voltage 2") with the voltage value that was actually measured at the battery cooling blower assembly (for lower side) connector.

      OK
      Tester Connection Switch Condition Specified Condition
      z77-2 (VM1) - z77-4 (GND1) Power switch on (IG) Difference between the value in the data list ("VMF Fan Motor Voltage 2") and the actual measurement value is 1 V or less.

      Tech Tips


      • When the battery smart unit is functioning normally, it will control the voltage to within 1 V of the actual measurement value.

      • Perform this inspection with the battery cooling blower assembly (for lower side) connector connected.

      • If the power switch is turned on (IG) with the service plug grip removed, DTC P0A0D-350 for the interlock switch system will be set. If this DTC is output, clear the DTC using the intelligent tester Click here.


    NG

    REPLACE BATTERY SMART UNIT Click here

    OK

    REPLACE BATTERY COOLING BLOWER ASSEMBLY (for Lower Side) Click here