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Carry out the following check.
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- Size check of wheels and tyres.
- Tyre wear and deterioration statuses.
- Check the tyre pressure.
note |
For the tyre pressure, refer to the tyre pressure label attached to the lower section
of driver’s side door striker.
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Q.
Is the check result normal?
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Correct the wheels and tyres in good condition. Then go to Step 9.
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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 9.
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At the same time with the following checks, also check that no parts other than the genuine
parts are mounted.
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- Brake pad check. (Refer to GROUP 35A - On-vehicle Service, Brake
Pad Check).
- Brake disc runout check. (Refer to GROUP 35A - On-vehicle Service, Brake
Disc Check).
- Brake drag force check. {Refer to GROUP 35A - Front Disc Brake
Assembly (front) and GROUP 35A - Rear Drum Brake Assembly (rear)}.
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Q.
Is the check result normal?
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Repair or replace the part(s) having damage or other problems. Then go to Step
9.
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At the same time with the following checks, also check that no parts other than the genuine
parts are mounted.
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- Front wheel alignment check (Refer to GROUP 33 - On-vehicle Service,
Front Wheel Alignment Check and Adjustment).
- Rear wheel alignment check (Refer to GROUP 34 - On-vehicle Service, Rear
Wheel Alignment Check and Adjustment).
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Q.
Is the check result normal?
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Repair or replace the part(s) having damage or other problems. Then go to Step
9.
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Check that no non-genuine electronic device or no wiring harness of the device other than
genuine electronic device is mounted near the wheel speed sensor (at wheel speed detection section
and wiring harness section).
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Q.
Is the check result normal?
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Remove the non-genuine electronic device or the wiring harness of non-genuine
electronic device. Then go to Step 9.
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Check the following service data. (Refer to ).
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- Item No. 01: FL wheel speed sensor.
- Item No. 02: FR wheel speed sensor.
- Item No. 03: RL wheel speed sensor.
- Item No. 04: RR wheel speed sensor.
- Item No. 06: Lateral G sensor.
- Item No. 07: Steering angle.
- Item No. 08: Yaw rate sensor.
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Q.
Is the check result normal?
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NO (Abnormality with items 01 to 04) : Check the installation status of corresponding wheel speed sensor. Then go to
Step 9.
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NO (Abnormality with item No. 06 or 08) : Go to Step 7.
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NO (Abnormality with item No. 07) : Check the installation status of steering wheel sensor (Refer to ). Then
go to Step 9.
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Carry out the following actuator tests, and check if they work normally. (Refer to .)
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- Item No.01: FL wheel ABS.
- Item No.02: FR wheel ABS.
- Item No.03: RL wheel ABS.
- Item No.04: RR wheel ABS.
- Item No.05: FL wheel TCL.
- Item No.06: FR wheel TCL.
- Item No.07: RL wheel TCL.
- Item No.08: RR wheel TCL.
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Q.
Is the check result normal?
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Replace the hydraulic unit assembly (integrated with ASC-ECU) (Refer to ).
Then go to Step 9.
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Q.
Is the check result normal?
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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 assembly (integrated with ASC-ECU) (Refer to ). Then
go to Step 9.
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Q.
Is the check result normal?
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This diagnosis is complete.
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