Lexus ES: Internal Control Module EEPROM Data Memory Failure (P062F44)

Lexus ES (XZ10) Service Manual / Drivetrain / Ua80e (automatic Transmission / Transaxle) / Automatic Transaxle System / Internal Control Module EEPROM Data Memory Failure (P062F44)

DESCRIPTION

The ECM 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	ECM internal malfunction (EEPROM)	ECM	Comes on	DTC stored	SAE Code: P062F

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P062F44

Internal Control Module EEPROM Data Memory Failure

ECM internal malfunction (EEPROM)

ECM

Comes on

DTC stored

SAE Code:

P062F

MONITOR DESCRIPTION

The ECM monitors its internal operation. If the internal operation is malfunctioning, the ECM will illuminate the MIL and store this DTC.

MONITOR STRATEGY

Related DTCs	P062F: Internal control module EEPROM error
Required sensors/components (Main)	ECM
Required sensors/components (Related)	-
Frequency of operation	Case 1, Case 2: Continuous Case 3: Once per driving cycle
Duration	-
MIL operation	Immediate
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
Battery voltage	8 V or higher

Case 2

All of the following conditions are met	-
Permanent Fault Code	Stored
OBDII system commands	Clear
Battery voltage	8 V or higher

Case 3

Battery voltage

8 V or higher

TYPICAL MALFUNCTION THRESHOLDS

Case 1

Following condition is met	2 data areas or more
Any of the following conditions (a), (b) or (c) are met	More than 3 times
(a) EEPROM access error	Occurred
(b) Permanent fault code	Not stored
(c) Permanent fault code	Not equal to commanded fault code

Case 2

Following condition is met	2 data areas or more
Either of the following conditions (a) or (b) is met	More than 3 times
(a) EEPROM access error	Occurred
(b) 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
(a) EEPROM access error occurred	More than 3 times
2. Permanent Fault Code data mismatch	More than 10 times

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

Connect the Techstream to the DLC3.
Turn the engine switch on (IG) and turn the Techstream on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the engine switch off and wait for 2 minutes or more.
Turn the engine switch on (IG) and turn the Techstream on.
Wait for 11 seconds or more with the engine switch on (IG). [*1]
HINT:

[*1] : Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / Transmission / Utility / All Readiness.
Input the DTC: P062F44.

Check the DTC judgment result.

Techstream 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 automatic transaxle are replaced.
Click here
After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.
Click here

PROCEDURE

1.	READ OUTPUT DTC (DTC P062F44)

(a) Connect the Techstream to the DLC3.

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

(d) Clear the DTCs.

Powertrain > Transmission > Clear DTCs

HINT:

Write down the currently output DTCs before clearing them.

(e) Turn the engine switch off and turn the Techstream off.

(f) Disconnect the Techstream.

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

(h) Connect the cable to the negative (-) battery terminal.

(i) Connect the Techstream to the DLC3.

(j) Turn the engine switch on (IG).

(k) Turn the Techstream on.

(l) Enter the following menus: Powertrain / Transmission / Trouble Codes.

Powertrain > Transmission > Trouble Codes

(m) Read the DTCs using the Techstream.

Result	Proceed to
DTCs are not output	A
DTC P062F44 is output	B

CHECK FOR INTERMITTENT PROBLEMS

2.	REPLACE ECM

(a) Replace the ECM.

Click here

PERFORM REGISTRATION

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Lexus ES: Internal Control Module EEPROM Data Memory Failure (P062F44)

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