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Home >> Ford >> 2000 >> Excursion 7.3 F, 4WD >> Repair and Diagnosis >> Transmission >> Transfer Case >> Four-Wheel Drive Systems (ESOF) - Excursion & F250-F550 Super Duty >> Diagnosis & Testing >> Retrieving Diagnostic Trouble Codes

Retrieving Diagnostic Trouble Codes

  1. Connect NGS tester to DLC and perform proper hook-up procedure. See EQUIPMENT HOOK-UP .
    2. NOTE: If instructed to retrieve DTCs from a specified test procedure, ensure ignition switch is in proper position as listed in test procedure. GEM requires ignition switch to be in ON position or test will fail.
  2. Turn ignition switch to ON position, unless otherwise instructed by specified test procedure. Rotate dial on scan tool to DIAGNOSTIC DATA LINK menu, and then press trigger.
  3. Rotate dial on scan tool to highlight desired module you wish to access. Ensure DIAGNOSTIC TEST MODES is highlighted, and then press trigger.
  4. Rotate dial on scan tool to highlight RETRIEVE/CLEAR CONTINUOUS DTC, and then press trigger. Press button No. 3 to start.
  5. Record all DTCs that are displayed for GEM. For DTC identification and reference for proper DTC testing procedure, see DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no DTCs are present, see ELECTRONIC SHIFT FUNCTIONAL TEST .
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