Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001C0XC
Model Year Start: 2019 Model: GR Corolla Prod Date Range: [06/2018 - 09/2019]
Title: POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Gasoline Model (for Hatchback)): C1582; Assist Map Number Mismatch; 2019 - 2020 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2019]

DTC

C1582

Assist Map Number Mismatch

DESCRIPTION

When an incorrect hybrid vehicle control ECU, main body ECU (multiplex network body ECU) or skid control ECU (brake actuator assembly) is installed after the assist map has been written to the power steering ECU with motor assembly, DTC C1582 is stored because the information stored in the power steering ECU with motor assembly does not match the vehicle specifications.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

Return-to-normal Condition

Note

C1582

Assist Map Number Mismatch

Assist map number mismatch
  • CAN communication system
  • Incorrect ECM
  • Incorrect main body ECU (multiplex network body ECU)
  • Incorrect skid control ECU (brake actuator assembly)
  • Power steering ECU with motor assembly

EPS warning light: Does not come on

Assist Map Writing is performed or the engine switch is turned on (IG) again

-

CAUTION / NOTICE / HINT

NOTICE:

If the power steering ECU with motor assembly has been replaced, perform assist map writing and torque sensor zero point calibration.

Click here 2019 - 2020 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2019]; POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Gasoline Model (for Hatchback)): CALIBRATION

HINT:

Related parts store information necessary for assist map writing.

Related Part:

  • ECM
  • Main body ECU (Multiplex network body ECU)
  • Skid control ECU (Brake actuator assembly)

PROCEDURE

1.

CHECK CAN COMMUNICATION SYSTEM

(a) Check for DTCs.

Click here 2019 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 01/2019]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM 2020 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 03/2019]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM 2020 MY Corolla Corolla Hatchback GR Corolla [03/2019 - 09/2019]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM

Result

Proceed to

CAN communication system DTCs are not output.

A

CAN communication system DTCs are output.

B
B

GO TO CAN COMMUNICATION SYSTEM

A

2.

CHECK RELATED PART

(a) Check if the part below has been replaced with an incorrect part in the past.

Related Part

ECM

Main body ECU (Multiplex network body ECU)

Skid control ECU (Brake actuator assembly)

NOTICE:

When removing the related part to check it, be sure to follow the appropriate procedures and precautions.

  • ECM

    Click here 2019 MY Corolla Corolla Hatchback [06/2018 - 01/2019]; M20A-FKS (ENGINE CONTROL): ECM: REMOVAL 2020 MY Corolla Corolla Hatchback [01/2019 - 03/2019]; M20A-FKS (ENGINE CONTROL): ECM: REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback [03/2019 - 09/2022]; M20A-FKS (ENGINE CONTROL): ECM: REMOVAL

  • Main body ECU (Multiplex network body ECU)

    Click here 2019 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 - 01/2019]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

  • Skid control ECU (Brake actuator assembly)

    Click here 2019 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 01/2019]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL 2020 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 03/2019]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback GR Corolla [03/2019 - 09/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL

(b) When DTC C1582 is output and parts have not been exchanged, replace the power steering ECU with motor assembly as it may have an internal malfunction.

NOTICE:

If the power steering ECU with motor assembly has been replaced, perform assist map writing.

Click here 2019 - 2020 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2019]; POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Gasoline Model (for Hatchback)): CALIBRATION

Result

Proceed to

The related part has an incorrect part number.

A

The related part has the correct part number, or a related part and power steering ECU with motor assembly have not been replaced.

B
B

REPLACE POWER STEERING ECU WITH MOTOR ASSEMBLY 2019 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 - 01/2019]; POWER ASSIST SYSTEMS: POWER STEERING ECU: REMOVAL 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; POWER ASSIST SYSTEMS: POWER STEERING ECU: REMOVAL 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2019]; POWER ASSIST SYSTEMS: POWER STEERING ECU: REMOVAL

A

3.

REPLACE RELATED PART WITH PART THAT HAS CORRECT PART NUMBER

(a) Replace the related part with one that has the correct part number.

  • ECM

    Click here 2019 MY Corolla Corolla Hatchback [06/2018 - 01/2019]; M20A-FKS (ENGINE CONTROL): ECM: REMOVAL 2020 MY Corolla Corolla Hatchback [01/2019 - 03/2019]; M20A-FKS (ENGINE CONTROL): ECM: REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback [03/2019 - 09/2022]; M20A-FKS (ENGINE CONTROL): ECM: REMOVAL

  • Main body ECU (Multiplex network body ECU)

    Click here 2019 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 - 01/2019]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

  • Skid control ECU (Brake actuator assembly)

    Click here 2019 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 01/2019]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL 2020 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 03/2019]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback GR Corolla [03/2019 - 09/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL

NEXT

4.

CHECK FOR DTC

(a) Check for DTCs.

Click here 2019 - 2020 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2019]; POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Gasoline Model (for Hatchback)): DTC CHECK / CLEAR

Chassis > EMPS > Trouble Codes

Result

Proceed to

DTCs are not output.

A

DTCs are output.

B
A

END
B

REPLACE POWER STEERING ECU WITH MOTOR ASSEMBLY 2019 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 - 01/2019]; POWER ASSIST SYSTEMS: POWER STEERING ECU: REMOVAL 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; POWER ASSIST SYSTEMS: POWER STEERING ECU: REMOVAL 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2019]; POWER ASSIST SYSTEMS: POWER STEERING ECU: REMOVAL