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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 38 (Hybrid Control System (2WD) - Diagnostics - Introduction (1 Of 2)) >> HYBRID CONTROL SYSTEM (for 2WD) >> Check For Intermittent Problems [12/2019 - 11/2023] >> Check For Intermittent Problems [12/2019 - 11/2023]

Check For Intermittent Problems [12/2019 - 11/2023]

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR INTERMITTENT PROBLEMS 
    1. Perform a simulation test.

      Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ]

      1. For the simulation test, reproduce the driving conditions that were present when the problem occurred. These conditions should be based on the customer's comments and Freeze Frame Data that is recorded with DTCs, such as the opening angle of the accelerator pedal, SOC (state of charge), engine coolant temperature, engine speed, and generator (MG1) / front motor (MG2) rpm and torque.
    2. Check the connector(s) and terminal(s).

      Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [12/2019 - ]

    3. Wiggle the harness and connector(s).

      Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ]

    4. Heat or cool suspected parts.

      Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ]

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