Test DA: Step 21

21) Check VREF Circuit Voltage at TPS  Turn key off and wait 10 seconds. Set DVOM on 20-volt scale. Disconnect TPS. With KOEO, measure voltage between VREF and SIG RTN at TPS vehicle harness connector. If reading is less than 4 volts or more than 6 volts, go to TEST C, step 1). If reading is between 4 and 6 volts, connect TPS and go to next step.