Throttle Position Switch: Tercel
- Start and warm engine to normal operating temperature. Connect positive voltmeter lead to throttle position switch terminal (Red/Yellow wire) and negative lead to ground. Voltage should be indicated.
- Slowly increase engine RPM. Note RPM when voltage reading drops from one to 0 volts. Engine RPM should be 1400 RPM. If RPM not correct, adjust engine RPM with adjusting screw. See Fig 1.