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Home >> Nissan-Datsun >> 2005 >> Sentra SE-R >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Introduction (Qr25DE) >> Trouble Diagnosis >> ECM Terminals and Reference Value >> Preparation
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ECM Terminals and Reference Value: Preparation

  1. ECM is located in the right side of the cowl top (behind the strut tower).
    Fig 1: Locating ECM In Right Side Of Cowl Top (Behind Strut Tower)
    G02450745Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Remove ECM harness protector.
  3. When disconnecting ECM harness connector, loosen it with levers as far as they will go as shown in Fig 2.
    Fig 2: Loosening ECM Harness Connector
    G02450746Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Connect a break-out box (SST) and Y-cable adapter (SST) between the ECM and ECM harness connector.
    • Use extreme care not to touch 2 pins at one time.
    • Data is for comparison and may not be exact.
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