|
|
Content .. 1259 1260 1261 1262 ..
P0841-LR 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 LOSS OF PRIME AND/OR TRANSMISSION CONTROL RELAY DTC PRESENT LOW FLUID LEVEL LOW LINE PRESSURE REVERSE CARRIER SNAP RING DISLODGED CRACKED OR MISINSTALLED PRIMARY OIL FILTER OR FILTER SEAL STICKING MAIN REGULATOR VALVE IN PUMP VALVE BODY NO. 1 CHECK BALL CUT OR DAMAGED WIRING AND CONNECTORS (T50) LR PRESSURE SWITCH SENSE CIRCUIT OPEN (T50) LR PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND (T50) LR PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE TRANSMISSION SOLENOID/TRS ASSEMBLY POWERTRAIN CONTROL MODULE 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 - 449 |