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23. If the 9 lift foot sets 9 are continually used, a speed control overshoot/undershoot condition will develop. 24. To 9 unlearn 9 the overshoot/undershoot condition, the vehicle operator has to press and release the set button while maintaining the desired set speed using the accelerator pedal (not decelerating or accelerating). 25. Then turn the cruise control switch to the OFF position (or press the CANCEL button if equipped) after waiting 26. This procedure must be performed approximately 10-15 times to completely unlearn the overshoot/undershoot Did the Speed Control pass the above test? Yes >> Repair is complete. No >> Check for any related Technical Service Bulletins and/or refer to the appropriate Diagnostic Procedure. 3. POWERTRAIN VERIFICATION TEST 2 1. If this vehicle is equipped with an Electronic Throttle Control system, and the APP Sensors, PCM, or Throttle NOTE: 2. After completing the Powertrain Verification Test the Transmission Verification Test must be per- NOTE: 3. If the PCM has been replaced and the correct VIN and mileage have not been programmed, a DTC NOTE: 4. If the vehicle is equipped with a Sentry Key Remote Entry, Secret Key data must be updated. Refer 6. With the scan tool, clear DTCs. 7. Perform generator output test. Refer to the appropriate service information as necessary. 8. Start the engine and set engine speed to 2000 RPM for at least thirty seconds. 9. Cycle the ignition key off and on. 10. With the scan tool, read the DTCs. Are any DTCs or symptoms remaining? Yes >> Check for any Technical Service Bulletins and/or refer to the appropriate Diagnostic Procedure. No >> Repair is complete. 4. POWERTRAIN VERIFICATION TEST 3 1. Install the Miller Tool #8404 Evaporative Emission Leak Detector (EELD) according to the instructions in the pre- 2. Set the smoke/air control switch to AIR. 3. Insert the tester’s AIR supply tip (clear hose) into the appropriate calibration orifice on the tester’s control panel 4. Press the remote smoke/air start button. 5. Position the red flag on the air flow meter so it is aligned with the indicator ball. 6. When the calibration is complete, release the remote button. The EELD flow meter is now calibrated in liters per 7. Install the service port adapter #8404-14 on the vehicle’s service port. 8. Connect the Air supply hose from the EELD to the vehicle. 9. Press the remote button to activate AIR flow. NOTE: 10. Larger volume fuel tanks, lower fuel levels or if the vehicle is equipped with a Flow Management 12. ABOVE the red flag indicates a leak present. 13. BELOW the red flag indicates a sealed system. 9 - 638 ENGINE ELECTRICAL DIAGNOSTICS KJ |