HYBRID BATTERY SYSTEM, Diagnostic DTC:P0A84-123

DTC Code DTC Name
P0A84-123 Hybrid Battery Pack Cooling Fan 1 Control Circuit Low

DESCRIPTION

The battery cooling blower assembly speed is controlled by the hybrid vehicle control ECU assembly. Power is supplied to each battery cooling blower assembly when the MREL terminal of the hybrid vehicle control ECU assembly turns on the IGCT relay. The hybrid vehicle control ECU assembly sends command signals (SI) to each battery cooling blower assembly to adjust the fan speed to an appropriate speed for the HV battery temperature. The frequency (FP) of each battery cooling blower assembly is sent to the hybrid vehicle control ECU assembly via the battery voltage sensor as a monitor signal using serial communication.

B004FUUE17
DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0A84-123 Hybrid Battery Pack Cooling Fan 1 Control Circuit Low

The battery cooling blower assembly is malfunctioning and both of the following conditions are met:

(1 trip detection logic)


  • The speed calculated based on the battery cooling blower assembly output frequency (FP) is not within the target control speed range.

  • The battery cooling blower assembly speed is excessively low when a speed below a certain level is requested (possibility of open or short to ground in connected circuits, short to +B or motor locking).

  • Wire harness or connector

  • Battery cooling blower assembly

  • BATT FAN fuse

  • Battery voltage sensor

  • Hybrid vehicle control ECU assembly

 Does not come on

Master Warning Light:

Comes on
Related Data List
DTC No. Data List
P0A84-123

  • Cooling Fan 0

  • Cooling Fan Mode 1

  • Cooling Fan Frequency 1

The following items can be helpful when performing repairs:


Tech Tips

"Cooling Fan Frequency 1" is detected when the battery cooling blower assembly is operating and its value changes in proportion to the battery cooling blower assembly speed.

WIRING DIAGRAM

B004EEQE01

CAUTION / NOTICE / HINT

CAUTION:


  • Before inspecting the high-voltage system, 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


  • As the battery cooling blower assembly speed is too low, there is a possibility of open or short to ground in connected circuits, short to +B or motor locking.

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


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Active Test / Driving the Battery Cooling Fan.

    4. Select fan mode 6 and operate the battery cooling blower assembly.

  • Operation of the battery cooling blower can be confirmed by checking if air is sucked into the air intake port of the intake duct.

PROCEDURE


  1. CHECK DTC OUTPUT (HYBRID CONTROL)

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

    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. Check for and record any HV system DTCs, INF codes and freeze frame data.


      Powertrain > Hybrid Control > Trouble Codes
      Result
      Result Proceed to
      P0AFC-123 is not output. A
      P0AFC-123 is also output. B

    5. Turn the power switch off.

    6. Disconnect the GTS from the DLC3.


    B

    GO TO DTC CHART (P0AFC-123) Click here

    A

  2. PERFORM ACTIVE TEST USING GTS (Driving the Battery Cooling Fan)


    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. Clear DTCs and freeze frame data.


      Powertrain > Hybrid Control > Clear DTCs

      Note

      When DTCs are cleared, freeze frame data and INF codes are also cleared.

    5. Enter the following menus: Powertrain / Hybrid Control / Active Test / Driving the Battery Cooling Fan.


      Powertrain > Hybrid Control > Active Test
      Tester Display Measurement Item Control Range Restrict Condition
      Driving the Battery Cooling Fan Battery cooling blower assembly operation and blower volume can be checked OFF, 1, 2, 3, 4, 5, 6 -

      Powertrain > Hybrid Control > Active Test
      Tester Display
      Driving the Battery Cooling Fan

    6. Select air volume mode 6 in the "Driving the Battery Cooling Fan" Active Test to operate the battery cooling blower assembly.

      Note

      If the Active Test cannot be performed, skip it and proceed to the next step to check if the fan operates and air is sucked. In accordance with fail-safe system operation, the hybrid vehicle control ECU assembly sends a command to operate the battery cooling blower assembly.

    7. Check that the battery cooling blower assembly operates and air is sucked into the inlet duct.

      Tech Tips

      The battery cooling blower assembly may not stop even when turning the cooling fan off in the "Driving the Battery Cooling Fan" Active Test. This is due to HV system control and not a malfunction.

    8. Turn the power switch off.

    9. Disconnect the GTS from the DLC3.

      Result
      Proceed to
      OK
      NG

    NG

    CHECK FUSE (BATT FAN) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (BATTERY VOLTAGE SENSOR - BATTERY COOLING BLOWER ASSEMBLY)

    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 luggage compartment trim cover RH.

      Click here

    3. Remove the upper No. 1 hybrid battery cover sub-assembly.

      Click here

    4. Disconnect the p1 battery voltage sensor connector.

    5. Disconnect the T35 battery cooling blower assembly connector.

    6. B004E96C28
      *a

      Rear view of wire harness connector

      (to Battery Voltage Sensor)
      *b

      Rear view of wire harness connector

      (to Battery Cooling Blower Assembly)

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      p1-8 (FP) - T35-2 (FP0) Power switch off Below 1 Ω
      p1-8 (FP) or T35-2 (FP0) - Body ground Power switch off 10 kΩ or higher

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

    8. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      T35-2 (FP0) - Body ground Power switch on (IG) Below 1 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.

      • 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.

      Tech Tips

      As there might be an intermittent malfunction, inspect the following items even if the measured voltage is as specified.

      Check that each connector between the battery voltage sensor and battery cooling blower assembly is not loose or disconnected.

    10. Turn the power switch off.

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

    12. Reconnect the T35 battery cooling blower assembly connector.

    13. Reconnect the p1 battery voltage sensor connector.

    14. Install the upper No. 1 hybrid battery cover sub-assembly.

    15. Install the luggage compartment trim cover RH.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. READ VALUE USING GTS (COOLING FAN FREQUENCY)

    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 luggage compartment trim cover RH.

      Click here

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

    4. Connect the GTS to the DLC3.

    5. Turn the power switch on (IG).

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

    7. Clear the DTCs and freeze frame data.


      Powertrain > Hybrid Control > Clear DTCs

      Note

      When DTCs are cleared, freeze frame data and INF codes are also cleared.

    8. Enter the following menus: Powertrain / Hybrid Control / Active Test / Driving the Battery Cooling Fan.


      Powertrain > Hybrid Control > Active Test
      Tester Display Measurement Item Control Range Restrict Condition
      Driving the Battery Cooling Fan Battery cooling blower assembly operation and blower volume OFF, 1, 2, 3, 4, 5, 6 -

      Powertrain > Hybrid Control > Active Test
      Tester Display
      Driving the Battery Cooling Fan

    9. Enter the following menus: Powertrain / Hybrid Control / Data List / Cooling Fan Frequency1.


      Powertrain > Hybrid Control > Data List
      Tester Display
      Cooling Fan Frequency1

    10. Select each air volume mode (1 to 6) in the "Driving the Battery Cooling Fan" Active Test to operate the battery cooling blower assembly.

      Note

      If the Active Test cannot be performed, skip it and proceed to the next step to check the frequency value. In accordance with fail-safe system operation, the hybrid vehicle control ECU assembly sends a command to operate the battery cooling fan assembly.

    11. B004FK3C03
      *a

      Component with harness connected

      (Battery Cooling Blower Assembly)
      *b

      Rear view of battery cooling blower assembly connector

      (to Wire Harness Connector)

      While the cooling fan is operating, compare the value in the Data List (Cooling Fan Frequency1) with the frequency value that was actually measured at the battery cooling blower assembly connector.

      Specified Condition
      Tester Connection Condition
      T35-2 (FP0) - T35-4 (GND0) Battery cooling blower assembly is operating

      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.

      Tech Tips

      Compare the values in each air volume mode (1 to 6). If the Active Test cannot be performed, compare the values only in the current air volume mode.

      Result
      Result Proceed to
      The value in the Data List (Cooling Fan Frequency1) and the actual measured value at the battery cooling blower assembly connector are 0 Hz. A
      Other than above B

    12. Turn the power switch off.

    13. Disconnect the GTS from the DLC3.

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

    15. Install the luggage compartment trim cover RH.


    B

    CHECK BATTERY VOLTAGE SENSOR (FREQUENCY) Click here

    A

  5. CHECK BATTERY VOLTAGE SENSOR


    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 luggage compartment trim cover RH.

      Click here

    3. Disconnect the T35 battery cooling blower assembly connector.

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

    5. Turn the power switch on (IG).

      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.

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

        Click here

    6. B004G1IC07
      *a

      Rear view of wire harness connector

      (to Battery Cooling Blower Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      T35-2 (FP0) - T35-4 (GND0) Power switch on (IG) 4.5 to 5.5 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.

    7. Turn the power switch off.

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

    9. Reconnect the T35 battery cooling blower assembly connector.

    10. Install the luggage compartment trim cover RH.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BATTERY COOLING BLOWER ASSEMBLY Click here

    NG

    REPLACE BATTERY VOLTAGE SENSOR Click here

  6. CHECK BATTERY VOLTAGE SENSOR (FREQUENCY)

    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 luggage compartment trim cover RH.

      Click here

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

    4. Connect the GTS to the DLC3.

    5. Turn the power switch on (IG).

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

    7. Clear DTCs and freeze frame data.


      Powertrain > Hybrid Control > Clear DTCs

      Note

      When DTCs are cleared, freeze frame data and INF codes are also cleared.

    8. Enter the following menus: Powertrain / Hybrid Control / Active Test / Driving the Battery Cooling Fan.


      Powertrain > Hybrid Control > Active Test
      Tester Display Measurement Item Control Range Restrict Condition
      Driving the Battery Cooling Fan Battery cooling blower assembly operation and blower volume can be checked OFF, 1, 2, 3, 4, 5, 6 -

      Powertrain > Hybrid Control > Active Test
      Tester Display
      Driving the Battery Cooling Fan

    9. Enter the following menus: Data List / Cooling Fan Frequency1.


      Powertrain > Hybrid Control > Data List
      Tester Display
      Cooling Fan Frequency1

    10. Select each air volume mode (1 to 6) in the "Driving the Battery Cooling Fan" Active Test to operate the battery cooling blower assembly.

      Note

      If the Active Test cannot be performed, skip it and proceed to the next step to check the frequency. In accordance with fail-safe system operation, the hybrid vehicle control ECU assembly sends a command to operate the battery cooling fan.

    11. B004FK3C04
      *a

      Component with harness connected

      (Battery Cooling Blower Assembly)
      *b

      Rear view of battery cooling blower assembly connector

      (to Wire Harness Connector)

      While the cooling fan is operating, compare the value in the Data List (Cooling Fan Frequency1) with the frequency value that was actually measured at the battery cooling blower assembly connector.

      Specified Condition
      Tester Connection Condition Specified Condition
      T35-2 (FP0) - T35-4 (GND0) Battery cooling blower assembly is operating Difference between the value in the Data List (Cooling Fan Frequency1) and the actual measurement value is 10% or less.

      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.

      Tech Tips

      Compare the values in each air volume mode (1 to 6). If the Active Test cannot be performed, compare the values only in the current air volume mode.

    12. Turn the power switch off.

    13. Disconnect the GTS from the DLC3.

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

    15. Install the luggage compartment trim cover RH.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BATTERY COOLING BLOWER ASSEMBLY Click here

    NG

    REPLACE BATTERY VOLTAGE SENSOR Click here

  7. CHECK FUSE (BATT FAN)


    1. B004F35C04
      *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
      *2 BATT FAN Fuse

      Remove the BATT FAN fuse from the No. 1 engine room relay block and No. 1 junction block assembly.

    2. Measure the resistance of the BATT FAN fuse.

      Standard Resistance
      Tester Connection Condition Specified Condition
      BATT FAN fuse Power switch off Below 1 Ω

    3. Install the BATT FAN fuse.

      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER ASSEMBLY - BATT FAN FUSE) Click here

    OK

  8. CHECK HARNESS AND CONNECTOR (IGCT RELAY - BATTERY COOLING BLOWER ASSEMBLY) (VOLTAGE)


    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 luggage compartment trim cover RH.

      Click here

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

    4. Connect the GTS to the DLC3.

    5. Turn the power switch on (IG).

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

    7. Clear DTCs and freeze frame data.


      Powertrain > Hybrid Control > Clear DTCs

      Note

      When DTCs are cleared, freeze frame data and INF codes are also cleared.

    8. B004FK3C10
      *a

      Component with harness connected

      (Battery Cooling Blower Assembly)
      *b

      Rear view of battery cooling blower assembly connector

      (to Wire Harness Connector)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      T35-1 (IG0) - T35-4(GND0) 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.

      Tech Tips

      Perform this inspection with the battery cooling blower assembly connectors connected.

    9. Turn the power switch off.

    10. Disconnect the GTS from the DLC3.

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

    12. Install the luggage compartment trim cover RH.

      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER ASSEMBLY - BODY GROUND) Click here

    OK

  9. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - BATTERY COOLING BLOWER ASSEMBLY)


    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 luggage compartment trim cover RH.

      Click here

    3. Disconnect the O142 hybrid vehicle control ECU assembly connector.

    4. Disconnect the T35 battery cooling blower assembly connector.

    5. B004FPOC10
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)
      *b

      Rear view of wire harness connector

      (to Battery Cooling Blower Assembly)

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      O142-29 (SI0) - T35-3 (SI0) Power switch off Below 1 Ω
      O142-29 (SI0) or T35-3 (SI0) - Body ground 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
      T35-3 (SI0) - 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 T35 battery cooling blower assembly connector.

    12. Reconnect the O142 hybrid vehicle control ECU assembly connector.

    13. Install the luggage compartment trim cover RH.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK HYBRID VEHICLE CONTROL ECU ASSEMBLY


    1. Remove the hybrid vehicle control ECU assembly.

      Click here

    2. B004EKBC47
      *a

      Component without harness connected

      (Hybrid Vehicle Control ECU Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O142-29 (SI0) - O141-5 (E01) Power switch off 10 kΩ or higher

    3. Install the hybrid vehicle control ECU assembly.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY Click here

    OK

  11. CHECK HYBRID VEHICLE CONTROL ECU ASSEMBLY (SI0 VOLTAGE)


    1. Turn the power switch on (IG).

    2. B004GFCC24
      *a

      Component with harness connected

      (Hybrid Vehicle Control ECU Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      O142-29 (SI0) - O141-5 (E01) Power switch on (IG) 4.5 to 5.5 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE BATTERY COOLING BLOWER ASSEMBLY Click here

    OK

  12. CHECK BATTERY COOLING BLOWER ASSEMBLY


    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 luggage compartment trim cover RH.

      Click here

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

    4. Connect the GTS to the DLC3.

    5. Turn the power switch on (IG).

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

    7. Clear the DTCs and freeze frame data.


      Powertrain > Hybrid Control > Clear DTCs

      Note

      When DTCs are cleared, freeze frame data and INF codes are also cleared.

    8. Enter the following menus: Powertrain / Hybrid Control / Active Test / Driving the Battery Cooling Fan.


      Powertrain > Hybrid Control > Active Test
      Tester Display Measurement Item Control Range Restrict Condition
      Driving the Battery Cooling Fan Battery cooling blower assembly operation and blower volume OFF, 1, 2, 3, 4, 5, 6 -

      Powertrain > Hybrid Control > Active Test
      Tester Display
      Driving the Battery Cooling Fan

    9. Select each air volume mode (1 to 6) in the "Driving the Battery Cooling Fan" Active Test to operate the battery cooling blower assembly.

      Note

      If the Active Test cannot be performed, skip it and proceed to the next step to check the waveform. In accordance with fail-safe system operation, the hybrid vehicle control ECU assembly sends a command to operate the battery cooling blower assembly.

    10. B004EY2C22
      *a

      Component with harness connected

      (Battery Cooling Blower Assembly)
      *b

      Rear view of wire harness connector

      (to Battery Cooling Blower Assembly)

      Connect an oscilloscope to the T35 battery cooling blower assembly connector and check the waveform.

      Item Content
      Tester Connection T35-3 (SI0) - T35-4 (GND0)
      Equipment Setting 10 V/DIV., 1 ms/DIV.
      Condition Power switch on (IG) during Active Test

      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.

      Tech Tips


      • Perform this inspection with the battery cooling blower assembly connector connected.

      • The wave length will vary with the operating speed of the battery cooling blower assembly.

    11. Turn the power switch off.

    12. Disconnect the GTS from the DLC3.

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

    14. B004G1HC01
      *a Waveform 1

      Install the luggage compartment trim cover RH.

      Result
      Result Proceed to
      Normal (The pulse output of waveform 1) A
      No pulse generation B

    A

    REPLACE BATTERY COOLING BLOWER ASSEMBLY Click here

    B

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY Click here

  13. CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER ASSEMBLY - BODY GROUND)


    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 luggage compartment trim cover RH.

      Click here

    3. B004FK3C11
      *a

      Component with harness connected

      (Battery Cooling Blower Assembly)
      *b

      Rear view of battery cooling blower assembly connector

      (to Wire Harness Connector)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T35-4(GND0) - Body ground Power switch off Below 1 Ω

    4. Install the luggage compartment trim cover RH.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  14. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - BODY GROUND)


    1. Disconnect the O141 hybrid vehicle control ECU assembly connector.

    2. B004EO6C57
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O141-5 (E01) - Body ground Power switch off Below 1 Ω

    3. Reconnect the O141 hybrid vehicle control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  15. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - BODY GROUND)


    1. Disconnect the O142 hybrid vehicle control ECU assembly connector.

    2. B004FRPC58
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O142-5 (E02) - Body ground Power switch off Below 1 Ω

    3. Reconnect the O142 hybrid vehicle control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  16. CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER ASSEMBLY - IGCT RELAY)


    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 luggage compartment trim cover RH.

      Click here

    3. Disconnect the T35 battery cooling blower assembly connector.

    4. Remove the IGCT relay.

    5. B004E8SC09
      *a

      Rear view of wire harness connector

      (to Battery Cooling Blower Assembly)
      *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
      *2 IGCT relay

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T35-1 (IG0) - 5 (IGCT relay) 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. Install the IGCT relay.

    7. Reconnect the T35 battery cooling blower assembly connector.

    8. Install the luggage compartment trim cover RH.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  17. CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER ASSEMBLY - BATT FAN FUSE)


    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 luggage compartment trim cover RH.

      Click here

    3. Disconnect the T35 battery cooling blower assembly connector.

    4. Remove the BATT FAN fuse.

    5. B004E60C08
      *a

      Rear view of wire harness connector

      (to Battery Cooling Blower Assembly)
      *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
      *2 BATT FAN Fuse

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T35-1 (IG0) - Terminals other than 2 (BATT FAN fuse) and body ground 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. Install the BATT FAN fuse.

    7. Reconnect the T35 battery cooling blower assembly connector.

    8. Install the luggage compartment trim cover RH.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  18. CHECK BATTERY COOLING BLOWER ASSEMBLY


    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 luggage compartment trim cover RH.

      Click here

    3. Disconnect the T35 battery cooling blower assembly connector.

    4. B004ENLC66
      *a

      Component without harness connected

      (Battery Cooling Blower Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T35-1 (IG0) - T35-4 (GND0) and body ground 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.

    5. Reconnect the T35 battery cooling blower assembly connector.

    6. Install the luggage compartment trim cover RH.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FUSE (BATT FAN)

    NG

  19. REPLACE BATTERY COOLING BLOWER ASSEMBLY

    Click here

    Result
    Proceed to
    NEXT

    NEXT

    REPLACE FUSE (BATT FAN)

  20. REPAIR OR REPLACE HARNESS OR CONNECTOR

    Result
    Proceed to
    NEXT

    NEXT

    REPLACE FUSE (BATT FAN)