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. This test is used to diagnose the following:
- Wiring Harness Circuits (ACCS, ACPSW, VPWR & WAC). See Fig 1-Fig 10
- Faulty Wide Open Throttle A/C Cut-Off (WAC) Relay
- Faulty Powertrain Control Module (PCM)
Fig 1: Identifying WAC Circuits & Connector Terminals (Blackwood, Crown Victoria, Econoline 4.2L, Excursion, Expedition, F250-F550 Pickup, Grand Marquis & Navigator)
Fig 3: Identifying WAC Circuits & Connector Terminals (Cougar, Escape, Explorer, Explorer Sport, Explorer Sport Trac, Focus, Mountaineer, Ranger, Sable, Taurus, Town Car & Windstar)
Fig 5: Identifying ACCS Circuits & Connector Terminals (Blackwood, Econoline 4.2L, Excursion, Expedition, F150 Without Visctronic Cooling Fan & Navigator)
Fig 6: Identifying ACPSW & ACCS Circuits & Connector Terminals (Cougar, Crown Victoria, Escape, Focus, F150 With Visctronic Cooling Fan, Grand Marquis, Sable, Taurus & Town Car)
Fig 8: Identifying ACPSW & ACCS Circuits & Connector Terminals (Explorer Sport, Explorer Sport Trac & Ranger)
WIDE OPEN THROTTLE A/C CUTOFF RELAY LOCATIONS
| Application | Location |
|---|---|
| Crown Victoria & Grand Marquis | In Relay Center, On Left Side Of Engine Compartment |
| LS & Thunderbird | In Auxiliary Junction Box, On Left Side Of Engine Compartment |
| All Others | In Battery Junction Box, In Engine Compartment |