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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 130 (Four-Wheel Drive Systems (ESOF) - F250-F550 Super Duty) >> Diagnosis And Testing >> Four-Wheel Drive Systems - Electronic Shift >> Inspection and Verification - Electronic Shift

Inspection and Verification - Electronic Shift

WARNING: This page is about a different car, the 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. Visually inspect for the following obvious signs of mechanical and electrical damage.
    VISUAL INSPECTION

    Mechanical Electrical
    • Hublocks
      • installed
      • correct type
    • Central junction box (CJB) fuse 59 (30A)
    • Central junction box (CJB) fuse 27 (15A), 34 (10A)
    • Axle shafts and universal joints
    		  
    • Driveshaft and universal joints
    • 4WD control module (GEM)
    • Shift linkage
    • Fluid leaks
    • Pulse vacuum hublock (PVH) solenoid
    • Matching tire size
    • Wiring harness
    • Vacuum harness
    • Mode select switch (MSS)
    • Gearmotor encoder assembly
    • Connector(s)
    • Shift relays
    • Circuitry
  2. If the concern remains after the inspection, connect the diagnostic tool to the data link connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
    • check that the program card is correctly installed.
    • check the connections to the vehicle.
    • check the ignition switch position.
  3. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool manual.
    4. NOTE: Make sure that the 4WD control module (GEM) is selected before attempting to carry out an on-demand self-test with the diagnostic tool.
  4. Carry out the DATA LINK DIAGNOSTICS test. If the diagnostic tool responds with:
    • CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to MODULE COMMUNICATIONS NETWORK .
    • NO RESP/NOT EQUIP for 4WD control module, GO to PINPOINT TEST D .
    • SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out the 4WD control module self-test.
  5. If the DTCs retrieved are related to the concern, go to the 4WD CONTROL MODULE DIAGNOSTIC TROUBLE CODE (DTC) INDEX  to continue diagnostics.
  6. If no DTCs related to the concern are retrieved, carry out the electronic shift function test. Refer to FUNCTION TEST - ELECTRONIC SHIFT  in this section.
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