Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001A0I6
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 - 08/2020]
Title: HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): P1C2E46; Motor Generator ECU(EEPROM) Calibration / Parameter Memory Failure; 2019 - 2020 MY Avalon HV [04/2018 - 08/2020]

DTC

P1C2E46

Motor Generator ECU(EEPROM) Calibration / Parameter Memory Failure

DESCRIPTION

The motor generator control ECU monitors its internal operation and will store this DTC if it detects a malfunction in its EEPROM.

Comes on

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

P1C2E46

Motor Generator ECU(EEPROM) Calibration / Parameter Memory Failure

ECU internal malfunction

(EEPROM error)

(2 trip detection logic)

Inverter with converter assembly

Does not come on

Master Warning Light:

Comes on

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.

Click here 2019 - 2020 MY Avalon HV [04/2018 - 08/2020]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): UTILITY

  1. Connect the Techstream to the DLC3.
  2. Turn the power switch on (IG) and turn the Techstream on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the power switch off and wait for 2 minutes or more.
  5. Turn the power switch on (IG) and turn the Techstream on.
  6. With power switch on (IG) and wait for 5 seconds or more.
  7. Turn the power switch off and wait for 2 minutes or more.
  8. Turn the power switch on (IG) and wait for 5 seconds or more.
  9. Enter the following menus: Powertrain / Motor Generator / Utility / All Readiness.
  10. 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 driving pattern again.

PROCEDURE

1.

CHECK AUXILIARY BATTERY VOLTAGE

Click here 2019 - 2021 MY Avalon HV [04/2018 - 08/2021]; A25A-FXS (BATTERY / CHARGING): CHARGING SYSTEM: ON-VEHICLE INSPECTION

HINT:

If the auxiliary battery voltage inspection results are normal, perform the next step.

NEXT

2.

CLEAR DTC

(a) Connect the Techstream to the DLC3.

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

(c) Enter the following menus: Powertrain / Motor Generator / Trouble Codes.

(d) Clear the DTCs.

Powertrain > Motor Generator > Clear DTCs

(e) Turn the power switch off and wait for 2 minutes or more.

NEXT

3.

PERFORM SIMULATION TEST

(a) Turn the power switch on (IG) and wait for 5 seconds or more.

(b) Turn the power switch off and wait for 2 minutes or more.

(c) Turn the power switch on (IG) and wait for 5 seconds or more.

(d) Enter the following menus: Powertrain / Motor Generator / Trouble Codes.

(e) Check for DTCs.

Powertrain > Motor Generator > Trouble Codes

Result

Proceed to

P1C2E46 is output.

A

P1C2E46 is not output.

B

(f) Turn the power switch off.

A

REFER TO REPLACE INVERTER WITH CONVERTER ASSEMBLY PARTS

B

CHECK FOR INTERMITTENT PROBLEMS