Check "S" Terminal Circuit

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK POWER SUPPLY FOR STARTER MOTOR "S" TERMINAL
1. Remove the fuel pump fuse.
2. Crank or start the engine (where possible) until the fuel pressure is released.
3. Turn the ignition switch OFF.
4. Disconnect starter motor connector F28 terminal S (B/W) connector.
5. Check voltage between starter motor connector F28 terminal S (B/W) and ground using a digital circuit tester.
  Ignition switch in START: Battery voltage
OK or NG
1. OK: GO TO 2.
2. NG: Check the following.
  - 40A fusible link (letter m , located in fuse and fusible link box)
  - Starter relay [within the intelligent power distribution module engine room (IPDM E/R)]
  - Harness for open or short
    
    Fig 1: Measuring Voltage Between Starter Motor Connector F28 Terminal S (B/W) And Ground
    Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK "S" TERMINAL CONNECTION QUALITY (VOLTAGE DROP TEST)
1. Connect starter motor connector F28 terminal S (B/W) connector.
2. Check voltage between starter motor connector F28 terminal S (B/W) and battery positive terminal using a digital tester.
  Ignition switch in START: Less than 1V
OK or NG
1. OK: Starter motor "S" terminal circuit is OK. Further inspection is necessary. Refer to WORK FLOW .
2. NG: Check harness between the battery and the starter motor "S" terminal for poor continuity.
  
  Fig 2: Measuring Voltage Between Starter Motor Connector F28 Terminal S And Battery
  Courtesy of NISSAN MOTOR CO., U.S.A.