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Memory Function Inoperative

  1. Disconnect power seat control module harness connector No. 1. See Figure . Measure resistance between terminals No. 3 and 4 at power seat control module harness connector No. 1. When memory switch button No. 1 is depressed approximately 290 ohms should exist. When switch is in neutral position, approximately 2200 ohms should exist. If resistance is as specified, go to next step. If resistance is not as specified, check wiring. See WIRING DIAGRAMS  . If wiring is okay, replace memory switch.
  2. Measure resistance between terminals No. 2 and 4 at power seat control module harness connector No. 1. When memory switch button No. 2 is depressed approximately 290 ohms should exist. When switch is in neutral position, approximately 2200 ohms should exist. If resistance is as specified, go to next step. If resistance is not as specified, check wiring. See WIRING DIAGRAMS  . If wiring is okay, replace memory switch.
  3. Measure resistance between terminals No. 1 and 4 at power seat control module harness connector No. 1. When memory switch button No. 3 is depressed approximately 156 ohms should exist. When switch is in neutral position, approximately 2200 ohms should exist. If resistance is as specified, go to next step. If resistance is not as specified, check wiring. See WIRING DIAGRAMS  . If wiring is okay, replace memory switch.
  4. Measure resistance between terminals No. 1 and 4 at power seat control module harness connector No. 1. When memory switch save button is depressed approximately 290 ohms should exist. When switch is in neutral position, approximately 2200 ohms should exist. If resistance is as specified, go to next step. If resistance is not as specified, check wiring. See WIRING DIAGRAMS  . If wiring is okay, replace memory switch.
  5. Measure voltage between pins No. 4 and 1 at power seat control module connector No. 1. If approximately 5 volts exists, go to next step. If approximately 5 volts does not exist, replace power seat control module.
  6. Measure voltage between pins No. 4 and 2 at power seat control module connector No. 1. If approximately 5 volts exists, go to next step. If approximately 5 volts does not exist, replace power seat control module.
  7. Measure voltage between pins No. 4 and 3 at power seat control module connector No. 1. If approximately 5 volts exists, go to next step. If approximately 5 volts does not exist, replace power seat control module.
  8. Measure resistance between terminals No. 4 and 1 at power seat control module harness connector No. 1. If approximately 2200 ohms exists, go to next step. If approximately 2200 ohms does not exist, check wiring. See WIRING DIAGRAMS  . If wiring is okay, replace memory switch.
  9. Measure resistance between terminals No. 4 and 2 at power seat control module harness connector No. 1. If approximately 2200 ohms exists, go to next step. If approximately 2000 ohms does not exist, check wiring. See WIRING DIAGRAMS  . If wiring is okay, replace memory switch.
  10. Measure resistance between terminals No. 4 and 3 at power seat control module harness connector No. 1. If approximately 2200 ohms exists, system is okay at this time. If approximately 2200 ohms does not exist, check wiring. See WIRING DIAGRAMS  . If wiring is okay, replace memory switch.
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