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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Control System (A25A-FXS) - Diagnostics - Introduction (1 Of 6)) >> SFI System >> Precaution [11/2023 - ] >> Precaution [11/2023 - ]

Precaution [11/2023 - ]

WARNING: This page is about a different variant/trim than selected.
  1. WHEN USING GTS 
    WARNING:

    Observe the following items for safety reasons:

    • Before using the GTS, read the instruction Service Information.
    • Prevent the GTS cable from being caught on the pedals, shift lever or steering wheel when driving with the GTS connected to the vehicle.
    • When driving the vehicle for testing purposes using the GTS, 2 persons are required. One to drive the vehicle, and another to operate the GTS.
  2. INITIALIZATION 
    NOTE:

    When the ECM is replaced, update the ECU security key.

    Refer to UPDATE ECU SECURITY KEY [11/2023 - ]

  3. PRECAUTIONS FOR DISCONNECTING CABLE FROM NEGATIVE (-) AUXILIARY BATTERY TERMINAL 
    NOTE:
    • After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

      Refer to BEFORE DISCONNECTING BATTERY [11/2023 - ]

    • When disconnecting and reconnecting the auxiliary battery.

      HINT: 

      When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

      Refer to AUTOMATIC LEARNING CHART [11/2023 - ]

  4. PRECAUTIONS FOR INSPECTING HYBRID CONTROL SYSTEM 
    1. Refer to Hybrid Control System.

      Refer to PRECAUTION [11/2023 - ]

  5. NOTICE FOR HYBRID CONTROL SYSTEM ACTIVATION 
    1. Refer to Hybrid Control System.

      Refer to PRECAUTION [11/2023 - ]