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Transmission Fluid Pressure Switch Logic

Transmission Fluid Pressure Switch Logic


Gear TFP Switch States
TFP SW1 *TFP SW3 TFP SW4 TFP SW5
Park High Low Low Low
Reverse Low Low Low Low
Neutral High Low Low Low
Drive 1st - Engine Braking High High Low Low
Drive 1st High High Low High
Drive 2nd High Low Low High
Drive 3rd Low High Low High
Drive 4th High High Low Low
Drive 5th Low High High Low
Drive 6th High Low High Low
High = 12 V (Switch Open or Pressurized) Low = 0 V (Switch Closed or No Pressure) Note: All TFP switches are normally closed (NC) *TFP switch 2 does not exist