Diagnosis Procedure

1. Disconnect battery current sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between battery current sensor harness connector and ground.

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

Is the inspection result normal?

YES

GO TO 3.

NO

GO TO 2.

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	1	F14	87	Existed

Is the inspection result normal?

YES

Check sensor power supply 2 circuit. Refer to Diagnosis Procedure .

NO

Repair or replace error-detected parts.

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	3	F14	64	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.

1. Check the continuity between battery current sensor harness connector and ECM harness connector.

   Battery current sensor		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   F5	4	F14	69	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.

Check battery current sensor. Refer to Component Inspection .

Is the inspection result normal?

YES

Check intermittent incident. Refer to Intermittent Incident .

NO

Replace battery negative cable assembly.