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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 ).
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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Perform the following checks.
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- Brake pedal check (Refer to GROUP 35A - On-vehicle Service, Brake
Pedal Check
.)
- Brake booster check (Refer to GROUP 35A - On-vehicle Service, Brake Booster
Operation Check
.)
- Check valve check (Refer to GROUP 35A - On-vehicle Service, Check Valve
Operation Check
.)
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Q.
Can any fault be found with the brake operation?
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Check the brake-related parts, and repair if necessary. Then, go to Step 6.
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Perform the following actuator tests. (Refer to .)
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- Item No.01: FL wheel ABS drive
- Item No.02: FR wheel ABS drive
- Item No.03: RL wheel ABS drive
- Item No.04: RR wheel ABS drive
- Item No.05: FL wheel TCL drive
- Item No.06: FR wheel TCL drive
- Item No.07: RL wheel TCL drive
- Item No.08: RR wheel TCL drive
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Q.
Is the check result normal?
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|
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ).
Then go to Step 6.
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|
Q.
Does the brake 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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Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ).
Then go to Step 6.
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Q.
Does the brake operate normally?
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This diagnosis is complete.
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