Diagnostic Aids
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2003 Mercury Sable, 2003 Mercury Mountaineer, 2003 Mercury Marauder, 2003 Mercury Grand Marquis, and 2003 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
Perform this test only when directed by QUICK TEST. This test is intended to diagnose the following:
- TP Sensor
- Binding Or Sticking Throttle Linkage
- Wiring Harness Circuits (PWR GND, SIG RTN, TP, VPWR & VREF)
- Powertrain Control Module (PCM)
Normal range of throttle angle measurement for TP sensor is 0-96.6 degrees. To pass QUICK TEST procedure, range of throttle rotation (in degrees) must be within 3 percent of specification. To prevent replacement of good components, be aware the following non-EEC related areas may be at fault:
- Idle Speed
- Binding Throttle Shaft Or Linkage
- TP Sensor Not Seated