Possible Causes
| Possible Causes |
|---|
| LOSS OF PRIME AND/OR TCM POWER INPUT DTCS PRESENT |
| LOW FLUID LEVEL |
| LOW LINE PRESSURE |
| REVERSE CARRIER SNAP RING DISLODGED |
| CRACKED OR MIS-INSTALLED 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) L/R PRESSURE SWITCH SENSE CIRCUIT OPEN |
| (T50) L/R PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND |
| (T50) L/R PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE |
| TRANSMISSION SOLENOID/TRS ASSEMBLY |
| POWERTRAIN CONTROL MODULE |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .
| 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. | |||||