Editing Torque converter lock up control 700R4
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− | + | =Converter lock up wiring= | |
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− | If you do not understand basic wiring, get help from someone | + | ==Basic wire diagram== |
+ | This is a simple 12 volt circuit. 12 volts to the solenoid and you need a ground to complete the circuit. When the brakes are applied the relay switches to pin 87 and the circuit is broken, thus unlocking the torque converter. A common Bosch relay used. | ||
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+ | If you do not understand basic wiring, get some help from someone with transmission / automotive wire knowledge. | ||
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[[Image:Diagram_no_tow.jpg|border|400px]] | [[Image:Diagram_no_tow.jpg|border|400px]] | ||
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==Pressure switches== | ==Pressure switches== | ||
− | Notice these pressure switches are silver in color. This means they are NO = Normally Open. When pressure is applied, the switch closes the internal contacts to complete the circuit | + | Notice these pressure switches are silver in color. This means they are NO = Normally Open. When pressure is applied, the switch closes the internal contacts to complete the circuit. |
− | + | All of these pressure switches are of an "on-off" design. Pressure turns them "on", no pressure turns them "off". | |
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{| | {| | ||
− | |[[Image:700_pressure_switches.jpg|thumb|350px|left| | + | |[[Image:700_pressure_switches.jpg|thumb|350px|left|The pressure switch with 1 pole is self-grounding. This means the wire you hook to it is going to be grounded when pressure is applied to the switch.]] |
− | |[[image:700_connectors.jpg|thumb|400px|left| | + | |[[image:700_connectors.jpg|thumb|400px|left|Pressure switch with two post connectors. This routes the 12 volt power through the switch to a single wire lock up solenoid.]] |
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*More common 2-wire solenoid, late design | *More common 2-wire solenoid, late design | ||
− | [[image:700_solenoid_wires.jpg|thumb|400px|left|Solenoid on the left | + | [[image:700_solenoid_wires.jpg|thumb|400px|left|Solenoid on the left has 1 red wire. This is a self-grounding lock up solenoid. The 2-wire solenoid has a red wire and a black wire. Red is for 12 volts, black is for ground.]]<br style="clear:both"/> |
==Valve body location for switch== | ==Valve body location for switch== | ||
− | [[Image:700_v-body_switch.jpg|thumb|400px|left|Location | + | [[Image:700_v-body_switch.jpg|thumb|400px|left|Location for pressure switch on valve body for 4th gear lockup only of the torque converter clutch (TCC). This location has pressure when the transmission is in 4th gear.]]<br style="clear:both"/> |
==Resources== | ==Resources== | ||
− | *[http://www. | + | *[http://www.dlcparts.com/images/BoschGuide.pdf Relay guide] |
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− | + | [[Category:Transmission]] | |
+ | [[Category:Good articles]] |