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 "Power circuit inspection" procedure.
Key "OFF".
Disconnect TPS connector.
Key "ON".
Measure the voltage between terminal 3 of TPS harness connector and chassis ground.
Specification : Approx. 5V
Is the measured voltage within specifications ?
YES
Go to "Signal circuit inspection" procedure
NO
Check for Open or Short to ground in TPS circuit. Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
Key "OFF".
Disconnect TPS connector.
Key "ON".
Measure the voltage between terminal 1 of TPS harness connector and chassis ground.
Specification : Approx. 5V
Is the measured voltage within specification ?
YES
Go to "Component inspection" procedure.
NO
Repair Short to ground in signal circuit and go to "Verification of Vehicle Repair" procedure.