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Test No. 2 (Key Reminder Switch Input Circuit)

  1. With ECU connector connected, connect voltmeter positive lead to ECU connector terminal No. 64 (Black/Blue wire). Connect negative lead to ground. Battery voltage should be present with ignition key removed. No voltage should exist with ignition key inserted. If voltage is as specified, go to next step. If voltage is not as specified, repair open circuit between ECU and fusible link No. 6.
  2. Turn ignition switch to OFF position. Disconnect ECU connector. Using an ohmmeter, check continuity between ECU wiring harness connector terminal No. 64 (Black/Blue wire) and ground. If continuity does not exist, repair open circuit.
NOTE: Voltage measurement requires use of an oscilloscope in the following test. Follow oscilloscope manufacturer's operating instructions.
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