Toyota Tacoma 2015-2018 Service Manual: Internal Control Module EEPROM Data Memory Failure (P062F44)
DESCRIPTION
The ECM monitors its internal operation and it will set this DTC when it detects an internal malfunction.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
SAE |
|---|---|---|---|
|
P062F44 |
ECM internal error (EEPROM) |
ECM |
P062F |
MONITOR DESCRIPTION
The ECM monitors its internal operation. If the internal operation is malfunctioning, the ECM will turn on the MIL and store the DTC.
MONITOR STRATEGY
|
Related DTCs |
P062F: Internal control module EEPROM error/ Functional |
|
Required sensors/Components (Main) |
ECM |
|
Required sensors/Components (Related) |
- |
|
Frequency of operation |
Continuous: Case 1, Case 2 Once per driving cycle: Case 3 |
|
Duration |
- |
|
MIL operation |
Immediately |
|
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 then 3 times |
|
(a) EEPROM communication timeout |
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 then 3 times |
|
(a) EEPROM communication timeout |
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 communication timeout 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
(See page
.gif)
).
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for 2 minutes or more.
- Turn the ignition switch to ON and turn the Techstream on.
- 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.
- 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 (See page
).
- Perform registration and/or initialization when parts related to the
automatic transmission are replaced (See page
).
- After turning ignition 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 (See page
).
PROCEDURE
|
1. |
READ OUTPUT DTC (DTC P062F44) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear DTCs (See page ).
(e) Turn the ignition 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 ignition switch to ON.
(k) Turn the Techstream on.
(l) Enter the following menus: Powertrain / Transmission / Trouble Codes.
(m) Read DTCs.
Result|
Result |
Proceed to |
|---|---|
|
No DTC output |
A |
|
P062F44 is output |
B |
| A | .gif) |
CHECK FOR INTERMITTENT PROBLEMS |
| B | |
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