Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.

Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

Has a problem been found?

	▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure
	▶ Go to " Signal Circuit Inspection " procedure.

IG "OFF" and disconnect battery sensor and ECM connector.

Check resistance between LIN terminal of battery sensor harness Connector and ECM harness connector.

Is the measured resistance within specification ?

	▶ Go to "Check short to battery in harness" as follows.
	▶ Repair open in harnesses and go to "Verification of Vehicle Repair".

IG "OFF" and disconnect battery sensor and ECM connector.

IG "ON"

Measure the voltage between LIN terminal of battery sensor harness connector and chassis ground.

Is the measured voltage within specification ?

	▶ Go to "Check short to ground in harness" as follows.
	▶ Repair short to battery in harnesses and go to "Verification of Vehicle Repair".

IG "OFF" and disconnect battery sensor and ECM connector.

Check resistance between LIN terminal of battery sensor harness Connector and chassis ground.

Is the measured resistance within specification ?

	▶ Go to "Componect Inspection" as follows.
	▶ Repair short to ground in harnesses and go to "Verification of Vehicle Repair".