Lexus ES: 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 |
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 |
| All of the following conditions are met | - |
| Permanent Fault Code | Not stored |
| OBDII system commands | Store |
| Battery voltage | 8 V or higher |
| All of the following conditions are met | - |
| Permanent Fault Code | Stored |
| OBDII system commands | Clear |
| Battery voltage | 8 V or higher |
| 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 |
| 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 |
| 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).
(c) Turn the Techstream on.
(d) Clear the DTCs.
Powertrain > Transmission > Clear DTCsHINT:
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 |
| A |  | CHECK FOR INTERMITTENT PROBLEMS |
|
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| 2. | REPLACE ECM |
(a) Replace the ECM.
Click here
| NEXT | | PERFORM REGISTRATION |
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