Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM1000000014UF1
Model Year Start: 2018 Model: Camry HV Prod Date Range: [07/2017 -           ]
Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): P0AFC62; Hybrid/EV Battery Sensor Module Signal Compare Failure; 2018 - 2024 MY Camry HV [07/2017 -        ]

DTC

P0AFC62

Hybrid/EV Battery Sensor Module Signal Compare Failure

DESCRIPTION

Refer to the description for DTC P1AC000.

Click here 2018 - 2024 MY Camry HV [07/2017 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): P1AC000; Hybrid/EV Battery Cell Low Voltage+

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

P0AFC62

Hybrid/EV Battery Sensor Module Signal Compare Failure

The difference between the voltage output by detection circuit C and the total of the voltage output by detection circuits A and B exceeds a threshold.

HINT: The battery voltage sensor uses 3 voltage detection circuits (A, B and C) to detect the voltage of the battery blocks.

(1 trip detection logic)

Battery voltage sensor

Comes on

Master Warning Light:

Comes on

HINT:

Hybrid Battery Block 1 to 11 Voltage values smaller than 2.0 V may not be shown in the Data List because a fail-safe value is substituted.

Related Data List

DTC No.

Data List

P0AFC62

Hybrid Battery Block 1 to 11 Voltage*1

HINT:

  • *1: Under normal conditions, the values of Hybrid Battery Block 1, 2, 9, 10 and 11 Voltage will be approximately 16 V and Hybrid Battery Block 3, 4, 5, 6, 7 and 8 Voltage will be approximately 32 V.
  • If there is a short or open in a battery block voltage detection line, the value of Hybrid Battery Block Voltage for the corresponding battery block will be lower than 8 V.

MONITOR DESCRIPTION

If the battery voltage sensor detects a voltage drop in a battery block, the hybrid vehicle control ECU assembly will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs

P0AFC (INF P0AFC62): Battery voltage sensor circuit malfunction (open)

Required sensors/components

Battery voltage sensor

Frequency of operation

Continuous

Duration

TMC's intellectual property

MIL operation

Immediately

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored

TMC's intellectual property

Other conditions belong to TMC's intellectual property

-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

-

COMPONENT OPERATING RANGE

Battery voltage sensor

DTC P0AFC (INF P0AFC62) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

  • After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

    Click here 2018 - 2024 MY Camry HV [07/2017 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): UTILITY

  • When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

    Click here 2018 - 2022 MY Camry HV [07/2017 - 08/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): DTC CHECK / CLEAR 2023 - 2024 MY Camry HV [08/2022 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): DTC CHECK / CLEAR

  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 2 minutes or more.
  5. Turn the power switch on (IG) and turn the Techstream on.
  6. With power switch on (IG) and wait for 20 seconds or more.[*1]

    HINT:

    [*1]: Normal judgment procedure.

    The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

  7. Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
  8. Check the DTC judgment result.

    HINT:

    • If the judgment result shows NORMAL, the system is normal.
    • If the judgment result shows ABNORMAL, the system has a malfunction.
    • If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

CAUTION / NOTICE / HINT

CAUTION:

  • Before the following operations are conducted, take precautions to prevent electric shock by turning the power switch off, wearing insulated gloves, and removing the service plug grip from HV battery.
    • Inspecting the high-voltage system
    • Disconnecting the low voltage connector of the inverter with converter assembly
    • Disconnecting the low voltage connector of the HV battery
  • To prevent electric shock, make sure to remove the service plug grip to cut off the high voltage circuit before servicing the vehicle.
  • After removing the service plug grip from the HV battery, 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 2018 - 2020 MY Camry HV [07/2017 - 10/2020]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): PRECAUTION 2021 - 2024 MY Camry HV [10/2020 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): PRECAUTION

    HINT:

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

    *a

    Without waiting for 10 minutes

  • Make sure to insulate the high-voltage connectors and terminals of the HV battery with insulating tape after removing it.

    If the HV battery stored without insulating the connectors and terminals, electric shock or fire may result.

  • When disposing of an HV battery, make sure to return it through an authorized collection agent who is capable of handling it safely. If the HV battery is returned via the manufacturer specified route, it will be returned properly and in a safe manner by an authorized collection agent.

    *a

    Dealer

    *b

    Battery Collection Agent

    • Accidents such as electric shock may result if the HV battery is disposed of improperly or abandoned. Therefore, make sure to return all HV batteries through an authorized collection agent.
  • After removing the HV battery, keep it away from water. Exposure to water may cause the HV battery to produce heat, resulting in a fire.

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 2018 - 2019 MY Camry HV [07/2017 - 09/2019]; INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION 2020 - 2024 MY Camry HV [09/2019 -        ]; INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION

PROCEDURE

1.

CHECK DTC OUTPUT (HYBRID CONTROL)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

(d) Check and record any HV system DTCs and freeze frame data.

(e) Read output DTCs.

Powertrain > Hybrid Control > Trouble Codes

Result

Proceed to

"P0AFC00, P0AFC96 or P308A12" is not output.

A

"P0AFC00, P0AFC96 or P308A12" is also output.

B

(f) Turn the power switch off.

B

GO TO DTC CHART (HYBRID CONTROL SYSTEM) 2018 MY Camry HV [07/2017 - 09/2018]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): DIAGNOSTIC TROUBLE CODE CHART 2019 - 2020 MY Camry HV [09/2018 - 10/2020]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): DIAGNOSTIC TROUBLE CODE CHART 2021 - 2024 MY Camry HV [10/2020 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): DIAGNOSTIC TROUBLE CODE CHART

A

2.

CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR)

CAUTION:

Be sure to wear insulated gloves.

(a) 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.

(b) Remove the No. 1 hybrid battery exhaust duct.

Click here 2018 - 2020 MY Camry HV [07/2017 - 10/2020]; HYBRID / BATTERY CONTROL: HV BATTERY (for NICKEL METAL HYDRIDE BATTERY): REMOVAL+ 2021 - 2024 MY Camry HV [10/2020 -        ]; HYBRID / BATTERY CONTROL: HV BATTERY (for NICKEL METAL HYDRIDE BATTERY): REMOVAL+

(c) Check the connections of the battery voltage sensor connector.

Click here 2018 - 2024 MY Camry HV [07/2017 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: ELECTRONIC CIRCUIT INSPECTION PROCEDURE

OK:

The connector is connected securely and there are no contact problems.

(d) Remove the No. 1 HV battery shield panel.

Click here 2018 - 2020 MY Camry HV [07/2017 - 10/2020]; HYBRID / BATTERY CONTROL: BATTERY VOLTAGE SENSOR(for NICKEL METAL HYDRIDE BATTERY): REMOVAL+ 2021 - 2024 MY Camry HV [10/2020 -        ]; HYBRID / BATTERY CONTROL: BATTERY VOLTAGE SENSOR(for NICKEL METAL HYDRIDE BATTERY): REMOVAL+

(e) Check the connections of the battery voltage sensor connector.

Click here 2018 - 2024 MY Camry HV [07/2017 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: ELECTRONIC CIRCUIT INSPECTION PROCEDURE

OK:

The connector is connected securely and there are no contact problems.

(f) Install the No. 1 HV battery shield panel.

(g) Install the No. 1 hybrid battery exhaust duct.

OK

REPLACE BATTERY VOLTAGE SENSOR 2018 - 2020 MY Camry HV [07/2017 - 10/2020]; HYBRID / BATTERY CONTROL: BATTERY VOLTAGE SENSOR(for NICKEL METAL HYDRIDE BATTERY): REMOVAL 2021 - 2024 MY Camry HV [10/2020 -        ]; HYBRID / BATTERY CONTROL: BATTERY VOLTAGE SENSOR(for NICKEL METAL HYDRIDE BATTERY): REMOVAL

NG

CONNECT SECURELY