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Home >> Nissan-Datsun >> 1992 >> Sentra SE-R >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Diagnosis & Testing >> Ecu Power & Ground Circuits >> Power Circuit
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Power Circuit

  1. Disconnect ECU connector. Turn ignition on. Check for battery voltage on ECU connector terminal No. 1. See Figure . If battery voltage is not present, repair circuit as necessary. If battery voltage is present, start engine.
  2. Check voltage on ECU connector terminal No. 15. If 6 or more volts is present, power circuit is okay. If less than 6 volts is present, check circuit between ECU and alternator connector terminal "L" (Yellow/Red wire). If circuit is okay, repair or replace alternator.
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