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Using M.U.T.-III, check the diagnosis code for the ASC system. (Refer to ).
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Q.
Is the check result normal?
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Carry out the diagnosis for the diagnosis code (Refer to ).
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Using M.U.T.-III, check if any abnormality is present to the coding data below which are
stored in the engine-ECU.
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Q.
Is the check result normal?
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Replace the engine-ECU (Refer to GROUP 13A - Engine-ECU) <4G64> or
(Refer to GROUP 13B - Engine-ECU) <4D56>. Then go to Step 4.
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Check that the brake tube is installed to the hydraulic unit assembly (integrated with
ASTC-ECU) correctly.
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Q.
Is the check result normal?
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Replace the hydraulic unit assembly (integrated with ASTC-ECU). Then go to Step
4.
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Connect the brake tubes correctly, and repair or replace the external brake lines
of the hydraulic unit assembly (integrated with ASTC-ECU).
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Q.
Does active stability control system operation normally?
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This diagnosis is complete.
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Check the brake system related components other than the stability control/TCL system.
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