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Home >> Nissan-Datsun >> 2003 >> Sentra SE-R, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 2183 (Starting System) >> DTC/Circuit Diagnosis >> B Terminal Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM - WITH CLUTCH INTERLOCK CANCEL SYSTEM " or "WIRING DIAGRAM - WITHOUT CLUTCH INTERLOCK CANCEL SYSTEM ".

CAUTION: Perform diagnosis under the condition that the engine cannot start by the following procedure.
  1. Remove fuel pump fuse.
  2. Crank or start the engine (where possible) until the fuel pressure is depleted.
  1. CHECK TERMINAL 2 POWER SUPPLY VOLTAGE
    1. Turn ignition switch OFF.
    2. Make sure that starter motor connector E210 terminal 2 connection is clean and tight.
    3. Check voltage between starter motor connector E210 terminal 2 and ground.
      VOLTAGE REFERENCE CHART

      (+) (-) Voltage
      Connector Terminal
      E210 2 Ground Battery voltage
      Fig 1: Checking Voltage Between Starter Motor Connector E210 Terminal 2 And Ground
      G05381020

      Is there battery voltage present? 

      YES: GO TO 2

      NO: Check harness between battery and starter motor for open circuit.

  2. CHECK BATTERY CABLE (VOLTAGE DROP TEST)
    1. Shift the transmission into park or neutral.
    2. Depress clutch pedal if the vehicle is equipped with M/T.
    3. Check voltage between battery positive terminal and starter motor connector E210 terminal 2 while cranking the engine.
      VOLTAGE REFERENCE CHART

      (-) (+) Condition Voltage
      Connector Terminal
      E210 2 Battery (+) terminal While cranking the engine Less than 0.2V
      Fig 2: Checking Voltage Between Battery Positive Terminal And Starter Motor Connector E210 Terminal 2
      G05381021

      Is the voltage drop less than 0.2V? 

      YES: GO TO 3

      NO: Check harness between the battery and the starter motor for high resistance.

  3. CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST)

    Check voltage between starter motor case and battery negative terminal while cranking the engine.

    VOLTAGE REFERENCE CHART

    (+) (-) Condition Voltage
    Starter motor case Battery (-) terminal While cranking the engine Less than 0.2V
    Fig 3: Checking Voltage Between Starter Motor Case And Battery Negative Terminal
    G05381022

    Is the voltage drop less than 0.2V? 

    YES: Terminal 2 circuit is OK. Further inspection necessary. Refer to "WORK FLOW ".

    NO: Check the starter motor case to engine mounting for high resistance.