Transmission Fluid Pressure Switch Logic
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Transmission Fluid Pressure (TFP) 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 | High | High | Low |
| Drive 6th (Possible additional gear state) | High | Low | High | Low |
| High = 12V (Switch Open or Pressurized) Low = 0V (Switch Closed or No Pressure) Note: All TFP switches are normally closed (NC) *TFP switch 2 does not exist |
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