Multi Function Switch: Inspection

Check BCM input/output specification of multifunction switch using the scan tool. If the specification is abnormal, replace the head lamp or wiper switch.
If diagnosis is required on the multifunction switch, select model and "BCM"

Fig 1: Scan Tool Display - Write Variant Coding
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Fig 2: Scan Tool Display - MFSW
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Select "Input/output monitoring".

Fig 3: Scan Tool Display - Select "Input/Output Monitoring"
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Check the input/output condition of "Lamp switch".

Fig 4: Scan Tool Display - "Lamp Switch" (1 Of 2)
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Fig 5: Scan Tool Display - "Lamp Switch" (2 Of 2)
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Check the input/output condition of "LAMPS".

Fig 6: Scan Tool Display - Condition Of "Lamps" (1 Of 4)
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Fig 7: Scan Tool Display - Condition Of "Lamps" (2 Of 4)
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Fig 8: Scan Tool Display - Condition Of "Lamps" (3 Of 4)
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Fig 9: Scan Tool Display - Condition Of "Lamps" (4 Of 2)
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Check the input/output condition of "WIPER".

Fig 10: Scan Tool Display - Wiper SW
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Fig 11: Scan Tool Display - Wiper High SW
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Fig 12: Scan Tool Display - Wiper INT SW
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Fig 13: Scan Tool Display - Washer SW
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Check the input/output condition of "AUTO LIGHT".

Fig 14: Scan Tool Display - Auto Light SW
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To check the DTC of the multifunction switch, select "DIAGNOSTIC TROUBLE CODES"

Fig 15: Scan Tool Display - Select "Diagnostic Trouble Codes"
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