Check "B" Terminal Circuit

WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

CHECK POWER SUPPLY FOR STARTER MOTOR "B" 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. Check that the starter motor connector F27 connection is clean and tight.
5. Check voltage between starter motor connector F27 terminal B (B/R) and ground using a digital circuit tester.
  
  Fig 1: Checking Voltage Between Terminal B & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Battery voltage should exist
OK or NG
- OK: GO TO 2.
- NG: Check harness between the battery and the starter motor for open circuit.
CHECK BATTERY CABLE CONNECTION QUALITY (VOLTAGE DROP TEST)
1. Check voltage between starter motor connector F27 terminal B (B/R) and battery positive terminal using a digital circuit tester.
  
  Fig 2: Checking Voltage Between Terminal B & Battery Positive Terminal
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Ignition switch in START: Less than 0.5V
OK or NG
- OK: GO TO 3.
- NG: Check harness between the battery and the starter motor for poor continuity.
CHECK STARTER MOTOR GROUND CIRCUIT (VOLTAGE DROP TEST)
1. Check voltage between starter motor case and battery negative terminal using a digital circuit tester.
  
  Fig 3: Checking Voltage Between Starter Motor Case & Battery Negative Terminal
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Ignition switch in START: Less than 0.2V
OK or NG
- OK: Starter motor "B" terminal circuit is OK. Further inspection is necessary. Refer to "WORK FLOW ".
- NG: Check harness between the starter motor case and ground for poor continuity.