Diagnostic Aids
WARNING: This page is about a different car, the 2002 Mercury Villager. However, it is still accessible from the selected car via links, so may be relevant.
Perform this test when instructed during QUICK TEST. This test is intended to diagnose the following:
- Throttle Position (TP) switch.
- Harness circuits; IDLE, IGN, SIG RTN, TP SIG and WOT.
- PCM.
- TCM.