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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 ).
On completion, go to Step 2.
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Using M.U.T.-III, check the gateway system data list (Refer to GROUP 54C -
Troubleshooting <Gateway>,
data list reference table).
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- Item No. 20: Steering 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 short 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 gateway-ECU (Refer to GROUP 54C -
Gateway-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. 19: 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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