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Automatic Disconnect Differential Actuator

WARNING: This page is about a different car, the 2002 Toyota Tundra and 2001 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: For circuit reference, see CONNECTOR IDENTIFICATION  and/or WIRING DIAGRAMS  .
  1. Disconnect actuator connector. Measure resistance between terminals No. 2 and 6. See Figure. Resistance should be 0.3-100 ohms. Measure resistance between terminals No. 2 and 6 and body ground. Resistance should be more than 0.5 ohms. If resistance value is not as specified, replace actuator assembly.
  2. Apply positive battery voltage to actuator terminal No. 2 and negative battery voltage to actuator terminal No. 6. See Figure. Listen for actuator engagement operation. Using an ohmmeter, check for continuity between actuator terminals No. 3 and 4. If there is no continuity, replace actuator.
  3. Apply positive battery voltage to actuator terminal No. 6 and negative battery voltage to actuator terminal No. 2. Listen for actuator disengagement operation. Using an ohmmeter, check that there is no continuity between actuator terminals No. 3 and 4. If there is continuity, replace actuator.
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