3. Check TPS Signal

1. Turn ignition switch to ON position.
2. Using the Hi-Scan (Pro), monitor the TPS signals while slowly opening the throttle.
   • 0.3 ~ 0.9 V at idle position 
   • 4.0 ~ 5.5 V at WOT 

Is signal within specification? 

Yes: Go to next step.

No: Replace the TPS.