DTC    P0A9C-123    Hybrid Battery Temperature Sensor "A" Range / Performance

DTC    P0AC6-123    Hybrid Battery Temperature Sensor "B" Range / Performance

DTC    P0ACB-123    Hybrid Battery Temperature Sensor "C" Range / Performance

DTC    P3065-123    Hybrid Battery Temperature Sensor Range/Performance Stuck "A"

for Preparation Click here


DESCRIPTION


  1. The battery temperature sensors are provided at 3 locations of the HV battery. The resistance of the thermistor, which is built into each battery temperature sensor, varies in accordance with changes in the HV battery temperature. The lower the battery temperature, the higher the thermistor resistance. Conversely, the higher the temperature, the lower the resistance. The battery smart unit uses the battery temperature sensors to detect the HV battery temperature, and sends the detected value to the power management control ECU. Based on the results of this detection, the power management control ECU controls the blower fan. (The blower fan starts when HV battery temperature rises above a predetermined level.)

    Temperature Sensor Identification Cross Reference Table:
    DTC Title Sensor
    		Battery Temperature Sensor
    		Intelligent tester Display
    A
    		0
    		1
    B
    		1
    		2
    C
    		2
    		3

    HINT:
    For example, sensor A in the DTC title is battery temperature sensor (No. 0). This sensor is displayed as Temp of Batt TB1 in the Data List.



    A171806E02


DTC No.
DTC Detection Condition
Trouble Area
P0A9C-123
P0AC6-123
P0ACB-123
P3065-123
When the battery temperature sensor performance is abnormal (1 trip detection/2 trip detection)
  1. HV battery
  2. Battery smart unit
  3. Wire harness or connector

WIRING DIAGRAM


A250961E01


INSPECTION PROCEDURE

CAUTION:
  1. 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.
  2. 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).

HINT:
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

NOTICE:
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).

1.CHECK DTC OUTPUT (HV)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Enter the following menus: Powertrain / Hybrid Control / DTC.

  1. Check if DTCs are output.

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

  1. Turn the power switch off.



B
GO TO DTC CHART (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.

    NOTICE:
    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.



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


    A236578E01


    Text in Illustration 
    *1
    		Battery Temperature Sensor 0
    		*2
    		Battery Temperature Sensor 1
    *3
    		Battery Temperature Sensor 2
    		-
    		-

    Standard Condition:
    Each battery temperature sensor is installed in the correct location with the correct orientation and its claws are engaged securely.

    Result:
    Result
    		Proceed to
    Each battery temperature sensor is installed in the correct location with the correct orientation and its claws are engaged securely.
    		A
    Claws are damaged.
    		B
    Any of battery temperature sensors are not installed correctly, but claws are not damaged.
    		C

    NOTICE:
    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.



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.

    NOTICE:
    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.



    A217836E14

  1. Disconnect connectors z10 and i1 from the battery smart unit.



    A216736E05

  1. Measure the resistance of the circuit for the malfunctioning sensor (battery temperature sensor 0 to 2).
    Tester Connection 
    Tester Connection
    		Battery Temperature Sensor No.
    z10-6 (TBO) - z10-12 (GBO)
    		0
    z10-5 (TB1) - z10-11 (GB1)
    		1
    z10-4 (TB2) - z10-10 (GB2)
    		2

    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

    Text in Illustration 
    *a
    		Rear view of wire harness connector
    (to Battery Smart Unit)



    A216735E10

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Standard Resistance
    z10-6 (TBO) - i1-4 (IGCT)
    		Power switch off
    		10 kΩ or higher
    z10-6 (TBO) - i1-8 (GND)
    		Power switch off
    		10 kΩ or higher
    z10-12 (GBO) - i1-4 (IGCT)
    		Power switch off
    		10 kΩ or higher
    z10-12 (GBO) - i1-8 (GND)
    		Power switch off
    		10 kΩ or higher
    z10-5 (TB1) - i1-4 (IGCT)
    		Power switch off
    		10 kΩ or higher
    z10-5 (TB1) - i1-8 (GND)
    		Power switch off
    		10 kΩ or higher
    z10-11 (GB1) - i1-4 (IGCT)
    		Power switch off
    		10 kΩ or higher
    z10-11 (GB1) - i1-8 (GND)
    		Power switch off
    		10 kΩ or higher
    z10-4 (TB2) - i1-4 (IGCT)
    		Power switch off
    		10 kΩ or higher
    z10-4 (TB2) - i1-8 (GND)
    		Power switch off
    		10 kΩ or higher
    z10-10 (GB2) - i1-4 (IGCT)
    		Power switch off
    		10 kΩ or higher
    z10-10 (GB2) - i1-8 (GND)
    		Power switch off
    		10 kΩ or higher
    z10-1 (TCO) - i1-4 (IGCT)
    		Power switch off
    		10 kΩ or higher
    z10-1 (TCO) - i1-8 (GND)
    		Power switch off
    		10 kΩ or higher
    z10-7 (GCO) - i1-4 (IGCT)
    		Power switch off
    		10 kΩ or higher
    z10-7 (GCO) - i1-8 (GND)
    		Power switch off
    		10 kΩ or higher

    Text in Illustration 
    *a
    		Rear view of wire harness connector
    (to Battery Smart Unit)

  1. Connect the battery smart unit connectors.



NG
Go to step 4
OK

REPLACE BATTERY SMART UNIT (Click here)  

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.

    NOTICE:
    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.



  1. Check the wire harness and connectors of the battery temperature sensor for abnormalities by sight and touch.


    A241555

    Specified Condition:
    There are no open or short circuits in the wire harness and connectors. There are no short circuits to other wire harnesses.



NG
REPAIR HARNESS OR CONNECTOR
OK

REPLACE HV BATTERY (Click here)