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Home >> Chrysler >> 2009 >> Sebring Base, 2D Convertible, ED3 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Powertrain Control Module (Pcm) - Electrical Diagnostics - 41TE Automatic Transmission) >> DTC Troubleshooting >> P0846-2/4 Pressure Switch Rationality >> Theory Of Operation

Theory Of Operation

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The Transmission control system uses three pressure switches to monitor the fluid pressure in the LR, 2/4, and OD elements. The pressure switches are continuously monitored for the correct states in each gear. The 2/4 pressure switch monitors the fluid pressure to the 2/4 clutch to confirm proper operation of the 2/4 solenoid. If the 2/4 pressure switch is identified as closed in Park or Neutral, the code will immediately be set and normal operation will be allowed for that given ignition start. If the 2/4 pressure switch is identified as closed in 1st or 3rd gear, the code will immediately be set, and the trans will shift to 2nd or 4th gear as appropriate. If the 2/4 pressure switch fails three times (in 1st or 3rd gear) during a single key start, the transmission will go into limp-in and the MIL will illuminate.

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