LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Honda >> 2021 >> Clarity Plug-In Hybrid >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System / Engine Mechanical - Testing & Troubleshooting - (Plug- In) >> General Information >> How to Enter PGM-FI System Maintenance Mode >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

How to Enter PGM-FI System Maintenance Mode: Procedure

  1. Maintenance Mode - Enter
    1. Turn the vehicle to the OFF (LOCK) mode.

    NOTE:  Do the following procedure within 60 seconds to start the engine in the maintenance mode.

    2. Turn the vehicle to the ON mode without stepping on the brake pedal.

    3. With the shift lever in P position/mode, press the accelerator pedal to the floor twice, then release it.

    4. Press the brake pedal and move the shift lever to N position/mode, then press the accelerator pedal to the floor twice, then release it.

    5. Press the brake pedal and move the shift lever to P position/mode, then press the accelerator pedal to the floor twice, then release it.

    6. Press the engine start/stop button while pressing down on the brake pedal. The vehicle is now in the maintenance mode and the engine will start.

    • "Maintenance Mode" is displayed in the MID.
    • If the engine coolant temperature gets too hot, the engine may not start until the engine coolant temperature drops.
    • To turn the engine OFF and cancel the maintenance mode, turn the vehicle to the OFF (LOCK) mode.
    • The VSA operates normally while the maintenance mode is in operation.
    • During cold starts in maintenance mode, for about 60 seconds there may be some additional transmission noise, this is considered normal.
    • When starting the engine in maintenance mode, you may hear a groan/rattle for about the first minute, or when the engine decelerates. This noise is caused by gear tolerance's, when the generator is not under load. This noise is considered normal while in maintenance mode.