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Check if the HSA works with one occupant (driver) only in the vehicle.
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Q.
Does the HSA work on a flat road?
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This diagnosis is complete.
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Evaluate the data list below with one person on the driver’s seat and the vehicle otherwise unloaded (unladen weight) on a smooth flat surface (Refer to ).
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- Item No. 05: Longitudinal G sensor
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Q.
Is the check result normal?
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Check the brake system for brake drag.
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Q.
Is the check result normal?
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Repair the brake drag. Then go to Step 4.
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Check if the HSA works with one person on the driver’s seat.
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Q.
Does the HSA work on a flat road?
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Replace the hydraulic unit assembly (integrated with ASTC-ECU) (Refer to ).
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This diagnosis is complete.
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