DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Engine Mechanical >> Starter >> Stop And Start System - Diagnostic Codes (3 Of 3) & Circuit Tests (1 Of 3) >> Stop And Start System >> Starter Signal Circuit [10/2022 - 11/2023] >> Caution / Notice / Hint

Caution / Notice / Hint

NOTE:
  • After replacing the starter assembly, perform initialization of the number of starter operations stored in the engine stop and start ECU.

    Refer to REGISTRATION [10/2022 - 11/2023]

  • After replacing the engine stop and start ECU or airbag ECU assembly, clear and calibrate the deceleration sensor zero point in the engine stop and start ECU.

    Refer to REGISTRATION [10/2022 - 11/2023]

  • After replacing the engine stop and start ECU assembly, perform learning of the external backup boost converter (eco run vehicle converter assembly).

    Refer to REGISTRATION [10/2022 - 11/2023]

  • When the engine stop and start ECU or oil pump with solenoid assembly is replaced, check the oil pump with solenoid assembly.

    Refer to REGISTRATION [10/2022 - 11/2023]

  • Before replacing the engine stop and start ECU, read the number of starter operations, total number of engine starts and write it into a new engine stop and start ECU.

    Refer to REGISTRATION [10/2022 - 11/2023]

  • When the starter assembly is replaced, "ST relay" must be also replaced.
  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • 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.

    Refer to INITIALIZATION [10/2022 - 11/2023]