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P0846-2C PRESSURE SWITCH RATIONALITY (CONTINUED) For the Transmission circuit diagram (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - For a complete wiring diagram Refer to Section 8W • When Monitored: • Set Condition: Possible Causes RELATED RELAY DTC’S PRESENT (T147) 2C PRESSURE SWITCH SENSE CIRCUIT OPEN (T147) 2C PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND (T147) 2C PRESSURE SWITCH SENSE CIRCUIT SHORT TO OTHER CIRCUITS EXCESSIVE FLUID LEAKAGE IN 2C CLUTCH CIRCUIT NO. 5 AND/OR NO. 7 CHECK BALL CUT OR DAMAGED EXTRA CHECK BALL DOWNSTREAM OF THE NO. 7 CHECK BALL SOCKET LOW LINE PRESSURE TRANSMISSION SOLENOID/TRS ASSEMBLY POWERTRAIN CONTROL MODULE WIRING AND CONNECTORS Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMIS- Theory of Operation The Transmission system uses five pressure switches to monitor the fluid pressure in the LR, 2C, 4C, UD, and OD GEAR L/R 2C 4C UD OD REVERSE OPEN OPEN OPEN OPEN OPEN P/N CLOSED** OPEN OPEN OPEN OPEN 1ST CLOSED* OPEN OPEN CLOSED OPEN 2ND OPEN CLOSED OPEN CLOSED OPEN 2ND PRIME OPEN OPEN CLOSED CLOSED OPEN 3RD OPEN OPEN OPEN CLOSED CLOSED 4TH OPEN OPEN CLOSED OPEN CLOSED 5TH OPEN CLOSED OPEN OPEN CLOSED *L/R is closed if output speed is below 100 rpm in Drive and Manual 2. L/R is closed in Manual 1. **May be open when rolling in Neutral or at low oil temperatures. HB AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS 21 - 465 |