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 "TPS circuit inspection" procedure.
Ignition "OFF"
Disconnect TPS connector
Ignition "ON"
Measure voltage between terminal "1","2" and "3" of sensor harness connector and chassis ground
Specification :
terminal "1" Approx. 5V
terminal "2" 0V
terminal "3" Approx. 5V
Is the measured voltage within specifications ?
YES
Go to "Component inspection" procedure
NO
Check for open or short in signal harness. Repair as necessary and then go to "Verification of Vehicle Repair" procedure.