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Check the part number of the hydraulic unit assembly (integrated with ASTC-ECU).
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Q.
Is the check result normal?
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Replace the hydraulic unit assembly (integrated with ASTC-ECU) (Refer to ). Then go to Step 2.
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Check the part number of ETACS-ECU.
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Q.
Is the check result normal?
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Replace ETACS-ECU (Refer to GROUP 54A - ETACS-ECU ). Then go to Step 3.
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Use the M.U.T.-III to check whether the ASTC system (Refer to ) and the ETACS-ECU set a diagnosis code (Refer to GROUP 54A - ETACS, Diagnosis Code Chart ).
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Q.
Is the check result normal?
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Diagnose the system according to the relevant diagnosis code procedure, and then go to Step 8.
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Perform the actuator test below to function-check the emergency braking signal system (Refer to ).
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- Item No. 10: ESS test mode
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Q.
Is the check result normal?
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This diagnosis is complete.
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Using M.U.T.-III, check if any abnormality is present in the coding data below which is stored in the ETACS-ECU.
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Q.
Is the check result normal?
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Replace ETACS-ECU (Refer to GROUP 54A - ETACS-ECU ). Then go to Step 8.
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Q.
Is the check result normal?
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Diagnose the power supply circuit to the ASTC-ECU (Refer to ). Then go to Step 8.
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Perform the actuator test below to function-check the emergency braking signal system (Refer to ).
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- Item No. 10: ESS test mode
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Q.
Is the check result normal?
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This diagnosis is complete.
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Replace ETACS-ECU (Refer to GROUP 54A - ETACS-ECU ). Then go to Step 8.
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Perform the actuator test below to function-check the emergency braking signal system (Refer to ).
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- Item No. 10: ESS test mode
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Q.
Is the check result normal?
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This diagnosis is complete.
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Replace the hydraulic unit assembly (integrated with ASTC-ECU) (Refer to ).
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