Diagnostic Aids

Check for contaminated sensor, poor connections, loose terminals, and open or shorted wires. See WIRING DIAGRAMS  . See Figure , Figure and Figure . Check output voltage. See THROTTLE POSITION SENSOR SIGNAL VOLTAGE  table. TP sensor resistance measured between terminals No. 1 and No. 3 should be 3200-4800 ohms. See WIRING DIAGRAMS  . See Figure . When TP sensor is replaced, closed throttle voltage must be reset. When DTC P0121 repairs are completed, perform DRIVE CYCLE: "B"  . When DTC P0122 or P0123 repairs are completed, perform DRIVE CYCLE: "A"  .