OIL PRESSURE SWITCH [EV6A-EL, EV6AX-EL]
OIL PRESSURE SWITCH [EV6A-EL, EV6AX-EL]
SM2565437
id0517o3360700
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.
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Relation of oil pressure switch and engagement pressure detection targets
|
Oil pressure switch |
Clutch/brake |
|
|---|---|---|
|
Oil pressure switch A
|
Oil pressure switch No.2
|
2-6 brake
|
|
Oil pressure switch No.3
|
R-3-5 brake
|
|
|
Oil pressure switch B
|
Oil pressure switch No.1
|
Low clutch
|
|
Oil pressure switch No.4
|
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
|
Oil pressure switch |
1GR |
2GR |
3GR |
4GR |
5GR |
6GR |
|---|---|---|---|---|---|---|
|
Oil pressure switch No.1
|
X
|
X
|
X
|
X
|
||
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Oil pressure switch No.2
|
X
|
X
|
||||
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Oil pressure switch No.3
|
X
|
X
|
||||
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Oil pressure switch No.4
|
X
|
X
|
X
|