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Use M.U.T.-III to perform the CAN bus diagnosis.
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Q.
Is the check result normal?
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Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting ).
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Q.
Is diagnosis code set?
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Repair the adaptive cruise control system (ACC) (Refer to ).
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Using M.U.T.-III, check the ETACS system data list (Refer to GROUP 54A - ETACS,
Troubleshooting, data list reference table ).
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- Item No.406: ACC distance switch
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Q.
Is the check result normal?
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Q.
Is the check result normal?
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Replace the cruise control switch (Refer to ).
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Check the connector and power supply line for open circuit.
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Q.
Is the check result normal?
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Repair the defective connector or the wiring harness.
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Check the connector and power supply or earth line for open circuit.
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Q.
Is the check result normal?
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Repair the defective connector or the wiring harness.
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Refer to GROUP 52B - Driver’s Air Bag Module and Clock Spring Inspection .
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Q.
Is the check result normal?
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Replace the ETACS-ECU (Refer to GROUP 54A - ETACS-ECU ).
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Replace the clock spring, and install the driver’s air bag module [Refer
to GROUP 52B - Driver’s Air Bag Module and Clock Spring ].
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Check the following data list (Refer to ).
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- Item No.51: ACC distance switch state
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Q.
Is the check result normal?
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Intermittent malfunction. (Refer to GROUP 00 - How to Cope with Intermittent
Malfunction ).
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Replace the ACC/FCM-ECU (Refer to ).
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