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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1737 (Automatic Transmission - ALLISON - DTC P0218 To DTC P0878) >> DTC P0843, P0848, or P0873 >> Typical Scan Tool Data

Typical Scan Tool Data

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
TFP Switch 1

Display Parameters Normal Range Short to Ground Open/High Resistance Short to Voltage
Operating Conditions:  Ignition ON, engine OFF
Pressure Switch 1 Signal High Low High -
Operating Conditions:  Engine running, transmission in park or neutral position
Pressure Switch 1 Signal Low Low High -
TFP Switch 2

Display Parameters Normal Range Short to Ground Open/High Resistance Short to Voltage
Operating Conditions:  Ignition ON, engine OFF
Pressure Switch 2 Signal High Low High -
Operating Conditions:  Engine running, transmission in park or neutral position
Pressure Switch 2 Signal Low Low High -
TFP Switch 3

Display Parameters Normal Range Short to Ground Open/High Resistance Short to Voltage
Operating Conditions:  Ignition ON, engine OFF
Pressure Switch 3 Signal High Low High -
Operating Conditions:  Engine running, transmission in park or neutral position
Pressure Switch 3 Signal Low Low High -