OIL PRESSURE SWITCH [GW6A-EL]
id0517i1360700
Purpose/Function
• The oil pressure switch detects the engagement pressures of the low clutch, 2-6 brake, R-3-5 brake, and the high clutch.
• The oil pressure switch signal is used for automatic shift control, manual shift control, TCC control, line pressure control, direct electric shift control, and the on-board diagnostic system.
Construction
• The oil pressure switch contacts the oil passages of the low clutch, 2-6 brake, R-3-5 brake, and the high clutch and is installed to the control valve body.
• The oil pressure switch is an on/off type switch.
Relation of oil pressure switch and engagement pressure detection targets
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Oil pressure switch
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Clutch/brake
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Oil pressure switch A
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Oil pressure switch No.2
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2-6 brake
|
|
Oil pressure switch No.3
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R-3-5 brake
|
|
Oil pressure switch B
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Oil pressure switch No.1
|
Low clutch
|
|
Oil pressure switch No.4
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High clutch
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Oil pressure switch A consists of oil pressure switch No.2 and No.3. If there is a malfunction in oil pressure switch No.2 and No.3, replace oil pressure switch A.
Oil pressure switch B consists of oil pressure switch No.1 and No.4. If there is a malfunction in oil pressure switch No.1 and No.4, replace oil pressure switch B.
Operation
• When engagement pressure is supplied to the applicable clutch and brake, the oil pressure switch contact point closes.
• The TCM detects that clutch engagement pressure is supplied to the applicable clutch/brake by opening/closing the oil pressure switch contact point.
X: Contact point is closed
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Oil pressure switch
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1GR
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2GR
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3GR
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4GR
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5GR
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6GR
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Oil pressure switch No.1
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X
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X
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X
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X
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|
|
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Oil pressure switch No.2
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|
X
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|
|
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X
|
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Oil pressure switch No.3
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|
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X
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X
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|
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Oil pressure switch No.4
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|
|
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X
|
X
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X
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