C5 - Check For Shorted Throttle Position Sensor
- Key "OFF".
- Breakout box installed, Powertrain Control Module (PCM) connected.
- Disconnect Throttle Position (TP) sensor from vehicle harness.
- Key "ON", engine "OFF".
- Measure voltage between test pin 26 and test pin 46 at the breakout box.
- Is voltage less than 4.0 volts?
Yes -- Key "OFF", reconnect TP sensor. Go to C7. C7 - Check For Shorted MAP/BARO Sensor
No -- Replace TP sensor. Remove breakout box. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)