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Incomplete Power Close - Overcurrent

NOTE: After making any repairs, perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  1. With the DRBIII®, record and erase DTCs. Turn the ignition off, wait 10 seconds, then turn the ignition on. Operate the power liftgate several times (if possible). With the DRBIII®, read DTCs. If the DRBIII® displays INCOMPLETE POWER CLOSE - OVERCURRENT, go to the next step. If the DRBIII® does not display INCOMPLETE POWER CLOSE - OVERCURRENT, 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 or binding liftgate prop rods, loose or hard weatherstrip, and gear teeth on the power liftgate motor assembly for wear or anything that would cause an obstruction to proper operation. Compare the effort needed on the disabled vehicle. Especially notice the effort needed to unlatch and close the liftgate. If it take more effort to operate the liftgate than it should, see POWER SLIDING DOORS & LIFTGATE article. If there were no mechanical problems found, go to the next step.
  3. Turn the ignition off. Disconnect the Power Liftgate Module C1 connector. See Figure. Using a 12-volt test light connected to 12-volts, check the ground circuit. Wiggle the harness and check for an intermittent open condition. If the test light illuminates brightly, go to the next step. If the test light does not illuminate brightly, repair the Ground circuit for an open.
  4. Turn the ignition off. Disconnect the Power Liftgate Module C1 connector. See Figure. Measure the resistance between ground and the Liftgate Close Driver circuit. Wiggle the harness and check for an intermittent short circuit condition. If the resistance is below 1000 ohms, repair the Liftgate Close driver circuit for a short to ground. If the resistance is above 1000 ohms, go to the next step.
  5. Turn the ignition off. Disconnect the Power Liftgate Module C2 connector. See Figure. Measure the resistance between ground and the Liftgate Latch Release Driver circuit. Wiggle the harness and check for an intermittent short condition. If the resistance is below 1000 ohms, repair the Liftgate Latch Release Driver circuit for a short to ground. If the resistance is above 1000 ohms, go to the next step.
  6. Turn the ignition off. Disconnect the Power Liftgate Module C2 connector. See Figure. Measure the resistance between the Ground circuit (cavity 20) and the Liftgate Latch Release Driver circuit. Wiggle the harness and check for an intermittent short condition. If the resistance is below 1000 ohms, repair the Liftgate Latch Release driver circuit for a short to the Ground circuit. If the resistance is above 1000 ohms, go to the next step.
  7. Turn the ignition off. Disconnect the Power Liftgate Module C2 connector. See Figure. Measure the resistance between ground and the Liftgate Gear Engage Driver circuit. Wiggle the harness and check for an intermittent short condition. If the resistance is below 1000 ohms, repair the Liftgate Gear Engage Driver circuit for a short to ground. If the resistance is above 1000 ohms, go to the next step.
  8. Turn the ignition off. Disconnect the Power Liftgate Module C2 connector. See Figure. Measure the resistance between the Ground circuit (cavity 20) and the Liftgate Gear Engage Driver circuit. Wiggle the harness and check for an intermittent short condition. If the resistance is below 1000 ohms, repair the Liftgate Gear Engage Driver circuit for a short to the Ground circuit. If the resistance is above 1000 ohms, go to the next step.
  9. Ensure all module and motor connectors are connected at this time. Try to operate the liftgate in the close position. If the motor starts to close the liftgate but was very slow and labored extensively, replace the Power Liftgate Motor assembly. See POWER SLIDING DOORS & LIFTGATE article. If liftgate does not operate, replace the Power Liftgate Module. See POWER LIFTGATE MODULE  under REMOVAL & INSTALLATION.
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