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Home › Nissan-Datsun › 2004 › Sentra SE-R › Repair and Diagnosis › External Pages › Different car › Section 2269 (Engine Control System - DTCS P1271 To P2138) › DTC P1550: Battery Current Sensor › Component Inspection › Battery Current Sensor

Battery Current Sensor

WARNING: This page is about a different car, the 2005 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.
  1. Reconnect harness connectors disconnected.
  2. Disconnect battery negative cable.
  3. Install jumper cable between battery negative terminal and body ground.
  4. Turn ignition switch ON.
    Fig 1: Installing Jumper Cable Between Battery Negative Terminal And Body Ground
    G03607282Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Check voltage between ECM terminal 71 (battery current sensor signal) and ground.

    Voltage: Approximately 2.5V 

    Fig 2: Checking Voltage Between ECM Terminal 71 And Ground
    G03607283Courtesy of NISSAN MOTOR CO., U.S.A.
  6. If NG, replace battery negative cable assembly.
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