Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Internal Control Module EEPROM Data Memory Failure (P062F44)

Toyota Corolla Cross (2022-2024) Service Manual / Drivetrain / K120f (cvt) / Continuously Variable Transaxle System / Internal Control Module EEPROM Data Memory Failure (P062F44)

DESCRIPTION

The TCM monitors its internal operation and will store this DTC when it detects an internal malfunction.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P062F44

Internal Control Module EEPROM Data Memory Failure

TCM internal malfunction (EEPROM)

TCM

Comes on

DTC stored

SAE Code:

P062F

MONITOR DESCRIPTION

The TCM monitors its internal operation. If it detects an internal malfunction, the TCM will illuminate the MIL and store this DTC.

MONITOR STRATEGY

Related DTCs

P062F: Internal control module EEPROM functional

Required sensors/Components

TCM

Frequency of operation

Continuous

Duration

-

MIL operation

Case 1, Case 2: Immediate

Case 3: Once per driving cycle

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

All

The monitor will run whenever the following DTCs are not stored

None
Case 1

All of the following conditions are met

-

Permanent fault code

Not stored

OBDII system commands

Store

Auxiliary battery voltage

8 V or higher
Case 2

All of the following conditions are met

-

Permanent fault code

Stored

OBDII system commands

Clear

Auxiliary battery voltage

8 V or higher
Case 3

Auxiliary battery voltage

8 V or higher

TYPICAL MALFUNCTION THRESHOLDS

Case 1

Following condition is met

2 data areas or more

One of the following conditions is met

More than 3 times

- EEPROM access error

Occurred

- Permanent fault code

Not stored

- Permanent fault code

Not equal to commanded fault code
Case 2

Following condition is met

2 data areas or more

One of the following conditions is met

More than 3 times

- EEPROM access error

Occurred

- Permanent fault code

Stored
Case 3

Either of the following conditions is met

1 or 2

1. Following condition is met

2 data areas or more

EEPROM access error occurred

More than 3 times

2. Following condition is met

More than 10 times

Permanent fault code data

Mismatch

CONFIRMATION DRIVING PATTERN

HINT:

  • After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
  • When clearing the permanent DTCs, refer to the Clear Permanent DTC procedure.

    Click here

  1. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  2. Turn the ignition switch off and wait for 2 minutes or more.
  3. Turn the ignition switch to ON and turn the GTS on.
  4. Wait for 11 seconds or more with the ignition switch to ON. [*1]

    HINT:

    [*1] : Normal judgment procedure.

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

  5. Enter the following menus: Powertrain / Transmission / Utility / All Readiness.
  6. Input the DTC: P062F44.
  7. Check the DTC judgment result.

    GTS Display

    Description

    NORMAL
    • DTC judgment completed
    • System normal

    ABNORMAL
    • DTC judgment completed
    • System abnormal

    INCOMPLETE
    • DTC judgment not completed
    • Perform driving pattern after confirming DTC enabling conditions

    N/A
    • Unable to perform DTC judgment
    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    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

NOTICE:

  • Perform the universal trip to clear permanent DTCs.

    Click here

  • Perform registration and/or initialization when parts related to the continuously variable transaxle system are replaced.

    Click here

  • Check that no DTCs are stored after performing initialization.

    Click here

  • After turning the ignition 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

PROCEDURE

1.

CHECK DTC OUTPUT (DTC P062F44)

(a) Clear the DTCs.

Powertrain > Transmission > Clear DTCs

HINT:

Write down the currently output DTCs before clearing them.

(b) Turn the ignition switch off.

(c) Disconnect the cable from the negative (-) auxiliary battery terminal and wait for 1 minute.

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

(e) Turn the ignition switch ON.

(f) Enter the following menus:

Powertrain > Transmission > Trouble Codes

(g) Read the DTCs using the GTS.

Result

Proceed to

DTCs are not output

A

DTC P062F44 is output

B
A

CHECK FOR INTERMITTENT PROBLEMS

Click here

Click here

B

2.

REPLACE TCM

Click here

NEXT

PERFORM REGISTRATION AND INITIALIZATION

for Registration: Click here

for Initialization: Click here

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