Throttle Position (TP) Sensor
Install jumper wires to enable connection of a DVOM in parallel between TP sensor harness connectors. Connect DVOM positive lead to Dark Blue TP sensor signal wire terminal. Connect negative lead to Black, Black/Orange or Purple sensor ground wire terminal. See Fig 1. Turn ignition on, with engine off. Signal voltage should gradually change from less than one volt at closed throttle to about 5.0 volts at wide open throttle position. If reading is not as specified, adjust or replace TP sensor. See the ADJUSTMENTS article.
A malfunction in the TP sensor circuit should set a related Diagnostic Trouble Code (DTC). For further information, see the TESTS W/CODES article.