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?

YES

Repair as necessary and go to "Verification of Vehicle Repair" procedure.

NO

Go to "Signal Circuit Inspection" procedure.

Ignition "OFF"

Disconnect FT sensor connector.

Measure voltage between terminal 2 of the sensor harness connector and chassis ground.

Specification : 4.8 ~ 5.1V

Is the measured voltage within specifications ?

YES

▶ Go to "Ground Circuit Inspection" procedure.

NO

▶ Check for short to ground in harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

Ignition "OFF".

Disconnect FT sensor connector and ECM connector.

Measure resistance between terminal 1 of the sensor harness connector and terminal 2 of ECM harness connector.

Is the measured resistance within specifications ?

YES

▶ Go to "Component Inspection" procedure.

NO

▶ Check for open in harness.

Repair as necessary and go to "Verification of Vehicle Repair" procedure.