Diagnostic Aids
WARNING: This page does not describe the selected car, but rather 25 other vehicles, including the 2002 Lincoln Town Car, 2002 Lincoln Navigator, 2002 Lincoln LS, 2002 Lincoln Continental, and 2002 Lincoln Blackwood. However, it is still accessible from the selected car via links, so may be relevant.
Perform this test when instructed during QUICK TEST or if directed by other test procedures. Only use this test to diagnose the following:
- HO2S & Sensor Connection
- Fuel Injector &/Or Fuel Injector Circuits
- Vacuum Systems
- Harness Circuits (HO2S, HO2S GND, INJ 1-10, VPWR & SIG RTN)
- Powertrain Control Module (PCM)
NOTE:
HO2S may be displayed on scan tool as 02S.
To prevent replacement of good components, be aware the following non-EEC areas may be cause of driveability concerns:
- Ignition System
- Faulty Evaporative Emission System
- EGR &/Or PCV System
- Air Intake System
- Engine Oil Contamination
- Fuel System
- Exhaust System Leaks Or Restriction
- Engine Cooling System