DH3 - Check For Stuck TP Sensor

- Key On, Engine Off.

- Access TP PID with the Scan Tool.

- Slowly move throttle from closed throttle position to wide open throttle position and observe the TP PID.

- While opening the throttle, is there a sudden drop in the TP PID to below 9.80% (0.49 volts)?

YES -- TP sensor has internal substrate problem. REPLACE TP sensor. Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes

NO -- Go to DH4. DH4 - Check TP Sensor Signal to PCM