Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM-ENGINE CONTROL SYSTEM- ".

1. CHECK GROUND CONNECTION
   1. Turn ignition switch OFF.
   2. Check ground connection E9. Refer to Ground Inspection in "CIRCUIT INSPECTION ".

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair or replace ground connection.

2. CHECK BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT
   1. Disconnect battery current sensor harness connector.
   2. Turn ignition switch ON.
   3. Check the voltage between battery current sensor harness connector and ground.

      Battery current sensor		Ground	Voltage (V)
      Connector	Terminal
      F5	1	Ground	Approx. 5

      Fig 1: Checking Voltage Between Battery Current Sensor Harness Connector F5 And Ground

      Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: GO TO 3.

      NO: Repair open circuit, short to ground or short to power in harness or connectors.

3. CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
   1. Turn ignition switch OFF.
   2. Disconnect ECM harness connector.
   3. Check the continuity between battery current sensor harness connector and ECM harness connector.

      Battery current sensor		ECM		Continuity
      Connector	Terminal	Connector	Terminal
      F5	2	F13	44	Existed

   4. Also check harness for short to ground and short to power.

      Is the inspection result normal? 

      YES: GO TO 4.

      NO: Repair open circuit, short to ground or short to power in harness or connectors.

4. CHECK BATTERY CURRENT SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
   1. Check the continuity between battery current sensor harness connector and ECM harness connector.

      Battery current sensor		ECM		Continuity
      Connector	Terminal	Connector	Terminal
      F5	3	F13	42	Existed

   2. Also check harness for short to ground and short to power.

      Is the inspection result normal? 

      YES: GO TO 5.

      NO: Repair open circuit, short to ground or short to power in harness or connectors.

5. CHECK BATTERY CURRENT SENSOR

   Refer to "COMPONENT INSPECTION ".

   Is the inspection result normal? 

   YES: GO TO 6.

   NO: Replace battery negative cable assembly.

6. CHECK INTERMITTENT INCIDENT

   Refer to "INTERMITTENT INCIDENT ".

   : INSPECTION END