SL L4-1.9L SOHC VIN 9 (1991)
Throttle Position Sensor: Adjustments
The TPS is not adjustable. The reading should be be checked only when the TPS sensor or throttle body has been replaced, idle speed has been adjusted,
or if a trouble codes exist.
To check the TPS reading disconnect TPS connector and connect jumpers between the harness connector and the TPS sensor. Connect a suitable digital
voltmeter to the dark blue and black wires in the TPS connector, or set the "Scan" tool to measure the TPS output voltage. Take reading with key "ON"
engine "OFF".
Check TPS only after the idle speed has been adjusted, or throttle body parts have been replaced.
Normal voltage readings should vary smoothly from about 0.4 volts to 4.7 volts as the throttle is moved from closed to wide open position.
Closed throttle voltage limits are 0.35 volt to 0.70 volts.
^
If voltage reading is satisfactory, remove the voltmeter or "Scan" tool and jumper leads. Reconnect the TPS connector.
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If proper voltage reading is not obtained, replace TPS sensor.
