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 here. This system test is intended to diagnose:
- Intake Air Temperature 2 (IAT2) Sensor
- Wiring Harness Circuits (IAT2 & SIG RTN)
- Powertrain Control Module (PCM)
See Figure for Mustang 4.6L SC.