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The system may be at fail-safe mode as the SWS
communication line is defective. If the ETACS-ECU does not receive the
ignition switch (ACC) signal due to an open circuit in the SWS
communication lines or other reasons when the ignition switch is at the ACC
position, the system will enter the fail-safe mode.
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- Malfunction of the column switch
- Malfunction of the front-ECU
- Damaged harness wires and connectors
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Check that the power supply and earth lines to
the column switch (column-ECU) and the front-ECU and the SWS communication
lines are normal.
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- Turn the ignition switch to the ACC position.
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OK: "OK" are displayed for all the
items
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Q.
Are the check result normal?
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"OK" is displayed for all the items : Go to Step
2.
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"NG" is displayed on the "COLUMN ECU" menu. :
Refer to GROUP 54C - SWS, Inspection Procedure 1 "Communication with the
column switch (column-ECU) is not possible ."
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"NG" is displayed on the "FRONT ECU" menu. :
Refer to GROUP 54C - SWS, Inspection Procedure 3 "Communication with the
front-ECU is not possible ."
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The windshield wiper should now work
normally.
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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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