Manuals through 2025 now available!
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LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
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lemon-manuals.org.ua
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Automatic Transmission 4TH Gear Switch
Gear Selector Switch Circuit:
Purpose: This switch is used by the ECM to modify Torque Converter Clutch lock and unlock points during a 4 - 3 gear downshift maneuver.
Operation: The fourth gear switch is normally open and closes when the transmission shifts into fourth gear. This switch is hydraulically controlled.
Location: The fourth gear switch is located inside the transmission.
