LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2022 >> Transit Connect Titanium, Gas/Ethanol >> Repair and Diagnosis >> External Pages >> Different car >> Section 195 (Automatic Transmission, Transfer Case And Power Transfer Unit - 6-Speed Automatic Transmission - 6R140 (2 Of 2)) >> Diagnosis And Testing >> Diagnostic Trouble Code (DTC) Charts and Pinpoint Tests - 6.8L Triton-30V - V10 >> Pinpoint Tests >> Pinpoint Test Q : DTC P1635

Pinpoint Test Q : DTC P1635

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.
  1. Normal Operation and Fault Conditions 

    The PCM uses tire size and axle ratio data stored in the Vehicle Identification (VID) block for shift strategies, TCC strategy, and diagnostics.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    PCM P1635:00 Tire/Axle Out of Acceptable Range: No Sub Type Information This DTC indicates the tire size, axle ratio or both do not match the information stored in the Vehicle Identification (VID) block.

    Possible Sources 

    • Incorrect axle ratio
    • Incorrect tire size
    • Communication concern
    • Incorrect, incomplete or corrupted TCM calibration.
    • PCM fault

  2. Q1 VERIFY THE TIRE SIZE AND AXLE RATIO MATCH THE INFORMATION STORED IN THE VEHICLE IDENTIFICATION (VID) BLOCK

    • Using a diagnostic scan tool, view the tire size and axle ratio parameters stored in the Vehicle Identification (VID) block.

    • Check the size of the tires that are installed on the vehicle.

    • Check the axle ratio that is installed in the vehicle.

    Do the tire size and axle ratio parameters in the Vehicle Identification (VID) block match the components installed on the vehicle? 

    Yes  GO to  Q2
    No  If possible, update the Vehicle Identification (VID) parameters to match the components installed on the vehicle. REFER to: Module Programming . INSTALL new components as necessary.

  3. Q2 RETRIEVE ALL CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)

    • Using a diagnostic scan tool, retrieve all continuous memory diagnostic trouble codes (CMDTCs) from all modules.

    Are any OSS sensor, VSS, or module communication diagnostic trouble codes (DTCs) present? 

    Yes  RESOLVE all OSS sensor, VSS and module communication diagnostic trouble codes (DTCs) first.
    No  GO to  Q3

  4. Q3 PROGRAM THE PCM (POWERTRAIN CONTROL MODULE) WITH THE LATEST CALIBRATION

    • Using a diagnostic scan tool, clear all diagnostic trouble codes (DTCs) from the PCM.

    • Road test the vehicle

    • Using a diagnostic scan tool, carry out the KOEO and KOER PCM self-tests.

    Is DTC P1635 present in the PCM? 

    Yes  Refer to PCM GUIDED ROUTINE TESTING After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download .
    No  The fault is not present at this time. It might have been caused by a corrupt TCM calibration.
scientia non olet · About LEMON Manuals