Lexus ES: Hybrid/EV Powertrain Control Module EEPROM Data Memory Failure (P062F44)
DESCRIPTION
The hybrid vehicle control ECU monitors its internal operation and will store these DTCs when it detects an internal malfunction. If these DTCs are output, replace the hybrid vehicle control ECU.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
|---|---|---|---|---|---|
| P062F44 | Hybrid/EV Powertrain Control Module EEPROM Data Memory Failure | ECU internal malfunction (EEPROM error) (1 trip detection logic) | Hybrid vehicle control ECU | Comes on | Master Warning Light: Does not come on |
MONITOR DESCRIPTION
The hybrid vehicle control ECU monitors its internal operation. If the internal operation is malfunctioning, the hybrid vehicle control ECU illuminates the MIL and stores a DTC.
MONITOR STRATEGY
| Related DTCs | P062F (INF P062F44): Internal control module EEPROM functional |
| Required sensors/components | Hybrid vehicle control ECU |
| Frequency of operation | Continuous |
| Duration | TMC's intellectual property |
| MIL operation | Immediately / 1 driving cycle |
| 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
| Hybrid vehicle control ECU | DTC P062F (INF P062F44) 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.
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-
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
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- Connect the Techstream to the DLC3.
- Turn the power switch on (IG) and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for 2 minutes or more.
- Turn the power switch on (IG) and turn the Techstream on.
-
With power switch on (IG) and wait for 15 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.
- Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
-
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
NOTICE:
There is a possibility that the DTC P062F44 is issued from the ECUs of the ECM and hybrid vehicle control ECU. Use Techstream to conduct a health check to confirm which ECU the DTC is issued from and then inspect the related system.
PROCEDURE
| 1. | REPLACE HYBRID VEHICLE CONTROL ECU |
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