Pinpoint Test J : DTC P2531
WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
- Transmission Controls - TorqShift 6 for schematic and connector information.
Normal Operation and Fault Conditions
DTC P2531 (Ignition Switch Run Position Circuit Low) -- sets in the TCM in continuous memory if the TCM has detected a voltage level above or below the accepted voltage range.
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition TCM P2531:00 Ignition Switch Run Position Circuit Low: No Sub Type Information This DTC sets in the TCM continuous memory if the TCM has detected a voltage level above or below the accepted voltage range. Possible Sources
- Ignition run circuit open to the TCM
- TCM
- J1 CHECK FOR IGNITION VOLTAGE TO THE TCM
- Disconnect TCM C1750.
- Ignition ON.
- Measure:
Positive Lead Measurement / Action Negative Lead Refer to C1750-31 Ground
Is the voltage 11 volts or greater?
Yes GO to J2 No CHECK fuse F33 (10A), if it is OK, REPAIR the open circuit. If not OK, REFER to the wiring diagrams article(s) to diagnose the short circuit. If the fuse is OK, REFER to OEM Electrical Wiring Diagram Introduction to identify and repair the open circuit. If the fuse is not OK, REFER to OEM Electrical Wiring Diagram Introduction to identify and repair the short to ground. - J2 CHECK FOR CORRECT TCM OPERATION
- Check for:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary
- Connect the TCM connector and make sure it seats and latches correctly.
- Connect the TCM connector and make sure it seats correctly.
Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new TCM. REFER to: Transmission Control Module (TCM) . After installing the new TCM PROGRAM it with the latest calibration and PERFORM the Solenoid Body Strategy Data Download. REFER to: Transmission Strategy Download . No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. - Check for: