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Using M.U.T.-III, check the diagnosis code for the ASC system.
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Q.
Is the check result normal?
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Carry out the diagnosis for the diagnosis code (Refer to ).
Then go to Step 6.
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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 (Refer to GROUP 00 - Coding Reference Table ).
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Q.
Is the check result normal?
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Replace the engine-ECU (Refer to GROUP 13A - Engine-ECU). Then go to
Step 6.
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Check that the brake tube is installed to the hydraulic unit (integrated with ASC-ECU)
correctly (Refer to ).
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Q.
Is the check result normal?
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Connect the brake tubes correctly, and repair or replace the external brake lines
of the hydraulic unit (integrated with ASC-ECU). Then go to Step 6.
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Q.
Does stability control/TCL operate normally?
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The trouble can be an intermittent malfunction (Refer to GROUP 00 - How
to Cope with Intermittent Malfunction).
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Check the brake system related components other than the stability control/TCL
system. Then go to Step 5.
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Q.
Does stability control/TCL operate normally?
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Replace the hydraulic unit assembly (integrated with ASC-ECU) (Refer to ). Then
go to Step 6.
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This diagnosis is complete.
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Q.
Does stability control/TCL operate normally?
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This diagnosis is complete.
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