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Home >> Toyota >> 2000 >> RAV4 Base, AWD, Standard >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> Center Differential Lock >> Testing >> Integration Relay
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Integration Relay

  1. Connect positive battery voltage to terminals No. 12 and No. 20. Connect negative battery voltage to terminal No. 11. See WIRING DIAGRAMS .
  2. Ensure bulb lights up and buzzer sounds for 4-8 seconds. Repeat step  1. Connect positive battery voltage to terminal No. 20. Ensure buzzer stops sounding.
  3. Inspect integration relay circuit. Remove relay from combination meter. Check connectors for damage or corrosion. Connect voltmeter between relay terminal No. 12 and ground. Turn ignition switch and differential lock control switch ON. Battery voltage should be present. Turn ignition switch ON and differential lock control switch OFF. Voltage should not be present.
  4. Connect voltmeter between relay terminal No. 20 and ground. Turn ignition switch ON and differential lock control switch OFF. Battery voltage should be present. Turn ignition off. Voltage should not be present. If any circuit fails test, replace relay.
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