Many malfunctions in the electrical system are caused by poor harness(es) 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 "Ground Circuit Inspection" procedure.

Ignition "OFF".

Disconnect TPS connector.

Ignition "ON" & Engine "OFF".

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

Specification : Approx. 0V

Is voltage within the specification?

YES

▶ Go to step "Signal Circuit Inspection" procedure.

NO

▶ Check the ground circuit for an open.

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

With connector still disconnected, measure voltage between terminal 1 of the sensor harness connector and chassis ground.

Specification : Approx. 5V

Is voltage within the specification?

YES

▶ Go to "Component Inspection" procedure.

NO

▶ Possibility of open or short to power in signal circuit. Repair as necessary and go to "Verification of Vehicle Repair" procedure.