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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.
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The oil pressure switch is an on/off type switch.
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.
Relation of oil pressure switch and engagement pressure detection targets
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.
| 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 |
|
X: Contact point is closed
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.
| 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 |
| Oil pressure switch No.3 |
|
| X |
| X |
|
| Oil pressure switch No.4 |
|
|
| X | X | X |