Diagnostic Procedure

CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body.
  Refer to "GROUND INSPECTION ".
  
  Fig 1: Checking Ground Connections
  Courtesy of NISSAN NORTH AMERICA, INC.
OK or NG

OK: GO TO 2.

NG: Repair or replace ground connections.
CHECK BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT
1. Disconnect battery current sensor (1) harness connector.
2. Turn ignition switch ON.
  
  Fig 2: Identifying Battery Current Sensor Harness Connector
  Courtesy of NISSAN NORTH AMERICA, INC.
3. Check voltage between battery current sensor terminal 1 and ground with CONSULT-II or tester.
  Voltage: Approximately 5V
  
  Fig 3: Checking Voltage Between Battery Current Sensor Terminal 1 And Ground
  Courtesy of NISSAN NORTH AMERICA, INC.
OK or NG

OK: GO TO 4.

NG: GO TO 3.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E5, F14
- Harness for open or short between battery current sensor and ECM
  Repair open circuit or short to ground or short to power in harness or connectors.
CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between battery current sensor terminal 2 and ECM terminal 67.
  Refer to WIRING DIAGRAM .
  
  Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG

OK: GO TO 6.

NG: GO TO 5.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E5, F14
- Harness for open or short between battery current sensor and ECM
  Repair open circuit or short to ground or short to power in harness or connectors.
CHECK BATTERY CURRENT SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between battery current sensor terminal 3 and ECM terminal 71.
  Refer to WIRING DIAGRAM .
  
  Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG

OK: GO TO 8.

NG: GO TO 7.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E2, F32
- Harness for open or short between battery current sensor and ECM
  Repair open circuit or short to ground or short to power in harness or connectors.
CHECK BATTERY CURRENT SENSOR
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 9.

NG: Replace battery negative cable assembly.
CHECK INTERMITTENT INCIDENT
Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

INSPECTION END