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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1964 (Automatic Transmission - 2MT70 - Introduction) >> Specifications >> Transmission Fluid Pressure Switch Logic

Transmission Fluid Pressure Switch Logic

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Gear TFP SW 1 *TFP SW 3 TFP SW 4 TFP SW 5
Park (Engine ON) Low Low High High
Reverse EVT (Engine ON) Low Low Low High
Neutral Low Low High High
EVT Mode 1 (Engine ON) Low Low High High
Drive 1st Low High High High
Drive 2nd Low Low High Low
EVT Mode 2 High High High High
Drive 3rd High High High High
Drive 4th High High Low Low
EVT Mode 2 High High High High
Power Off Low Default Low High High High
Power Off High Default High High High High
High = 12V (Switch Open or Pressurized)
Low = 0 volts (Switch Closed or No Pressure)
Note: All TFP switches are normally closed (NC)
*TFP switch 2 does not exist