DTC 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.

   Battery current sensor		Ground	Voltage (V)
   Connector	Terminal
   E63	2	Ground	Approx. 5

Is the inspection result normal?

YES

GO TO 3.

NO

GO TO 2.

Refer to Diagnosis Procedure .

Is inspection result normal?

YES

Perform the trouble diagnosis for power supply 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
   E63	4	F91	43	Existed

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

Is the inspection result normal?

YES

GO TO 5.

NO

GO TO 4.

Check the following.

• Harness for open or short between battery current sensor and ECM
• Loose or poor connection for each connector and harness

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
   E63	3	F91	38	Existed

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

Is the inspection result normal?

YES

GO TO 7.

NO

GO TO 6.

Check the following.

• Harness for open or short between battery current sensor and ECM
• Loose or poor connection for each connector and harness

Repair open circuit, short to ground or short to power in harness or connectors.

Refer to Component Inspection .

Is the inspection result normal?

YES

GO TO 8.

NO

Replace battery negative cable assembly.

Refer to Inspection .

INSPECTION END