Transmission Fluid Pressure (TFP) Manual Valve Position Switch Logic
WARNING: This page is about a different car, the 2004 GMC Safari and 2004 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
TFP Manual Valve Position Switch Logic
| Gear Selector Position |
Signal A |
Signal B |
Signal C |
| Park/Neutral |
HI |
LOW |
HI |
| Reverse |
LOW |
LOW |
HI |
| Drive 4 |
HI |
LOW |
LOW |
| Drive 3 |
HI |
HI |
LOW |
| Drive 2 |
HI |
HI |
HI |
| Drive 1 |
LOW |
HI |
HI |
| Invalid |
LOW |
HI |
LOW |
| LOW |
LOW |
LOW |
- HI = Ignition voltage
- LOW = 0 voltage
|