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Incomplete Power Close - Hall Effect Signal Missing

NOTE: After making any repairs, perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  1. With the DRBIII®, record and erase DTC's. Turn the ignition off, wait 10 seconds, then turn the ignition on. Operate the power liftgate several times from stop to stop if possible. With the DRBIII®, read ACTIVE DTCs. If the DRBIII® displays INCOMPLETE POWER CLOSE - HALL EFFECT SIGNAL MISSING, go to the next step. If the DRBIII® does not display INCOMPLETE POWER CLOSE - HALL EFFECT SIGNAL MISSING, inspect the wiring and connectors for an intermittent condition. Operate the liftgate several times and check for any binding conditions.
  2. Examine the liftgate for proper alignment, worn or binding hinges, weak liftgate prop assembly, loose/hard weatherstrip, and gear teeth on the power liftgate motor assembly for wear or anything that would cause an obstruction to proper operation. If necessary manually operate the power liftgate on a known good vehicle and notice the effort needed to open and close for comparison. Especially notice the effort needed to unlatch and close the liftgate. If it takes more effort to operate the liftgate than it should, see POWER SLIDING DOORS & LIFTGATE article. If liftgate operates properly, go to the next step.
  3. Operate the liftgate from the full open position and put an obstacle in its path to make it reverse. If the liftgate reversed back to the open position, go to the next step. If the liftgate did not reverse back to the open position, replace the Power Liftgate Module. See POWER LIFTGATE MODULE  under REMOVAL & INSTALLATION.
  4. Disconnect the Power Liftgate Motor connector. See Figure. Using a 12-volt test light connected to 12-volts, check the Ground circuit. If the test light illuminates brightly, go to the next step. If the test light does not illuminate brightly, repair the hall effect ground circuit for an open.
  5. Disconnect the Power Liftgate Motor connector. See Figure. Disconnect the Power Liftgate Module C2 connector. See Figure. Measure the resistance of the Liftgate Hall Effect Supply circuit between the Power Liftgate Motor connector and the Power Liftgate Module C2 connector. If the resistance is below 5 ohms, go to the next step. If the resistance is above 5 ohms, repair the Liftgate Hall effect Supply wire for an open.
  6. Disconnect the Power Liftgate Motor connector. See Figure. Disconnect the Power Liftgate Module C2 connector. See Figure. Measure the resistance between ground and the Liftgate Hall Effect Supply circuit. If the resistance is below 100 ohms, repair the Liftgate Hall Effect Supply wire for a short to ground. If the resistance is above 100 ohms, go to the next step.
  7. Disconnect the Power Liftgate Motor connector. See Figure. Disconnect the Power Liftgate Module C2 connector. See Figure. Measure the resistance between the Ground circuit (cavity 20) and the Liftgate Hall Effect Supply circuit. If the resistance is below 1000 ohms, repair the Liftgate Hall Effect Supply wire for a short to the Ground circuit. If the resistance is above 1000 ohms, go to the next step.
  8. Disconnect the Power Liftgate Motor connector. See Figure. Disconnect the Power Liftgate Module C2 connector. See Figure. Measure the resistance of the Liftgate Hall Effect Signal circuit between the Power Liftgate Motor connector and the Power Liftgate Module C2 connector. If the resistance is below 5 ohms, go to the next step. If the resistance is above 5 ohms, repair the Liftgate Hall Effect Signal wire for an open.
  9. Disconnect the Power Liftgate Motor connector. See Figure. Disconnect the Power Liftgate Module C2 connector. See Figure. Measure the resistance between ground and the Liftgate Hall Effect Signal circuit. If the resistance is below 100 ohms, repair the Liftgate Hall Effect Signal wire for a short to ground. If the resistance is above 100 ohms, go to the next step.
  10. Disconnect the Power Liftgate Motor connector. See Figure. Disconnect the Power Liftgate Module C2 connector. See Figure. Measure the resistance between the Ground circuit (cavity 20) and the Liftgate Hall Effect Signal circuit. If the resistance is below 1000 ohms, repair the Liftgate Hall Effect Signal wire for a short to the Ground circuit. If the resistance is above 1000 ohms, go to the next step.
  11. If there are no possible causes remaining, replace the Power Liftgate Motor Assembly (hall effect switch). See POWER SLIDING DOORS & LIFTGATE article.
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