Possible Causes
WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
|---|
| RELATED DTCS PRESENT |
| LOSS OF 12 VOLT FEED |
| (T48) 4C PRESSURE SIGNAL CIRCUIT OPEN |
| (T48) 4C PRESSURE SIGNAL CIRCUIT SHORTED TO GROUND |
| EXCESSIVE FLUID LEAKAGE IN THE 4C CLUTCH CIRCUIT |
| NO. 5 CHECK BALL CUT OR DAMAGED |
| LOW LINE PRESSURE |
| TRANSMISSION SOLENOID/TRS ASSEMBLY |
| POWERTRAIN CONTROL MODULE (PCM) |
| WIRING AND CONNECTORS |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to STANDARD 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. |
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