System Tests: Notes
WARNING: This page is about a different car, the 2001 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
When battery is disconnected or modules are replaced, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See
COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.
NOTE:
Before replacing any control module, ensure all module ground and power circuits are functioning properly. For circuit identification, see GROUND DISTRIBUTION and POWER DISTRIBUTION articles in WIRING DIAGRAMS.
NOTE:
After repairs are complete, ensure all components are properly installed and all harness connectors are connected properly. Always clear any DTCs that exist and recheck system operation. A New Generation Star (NGS) tester or other OBD-II compliant and Digital Volt/Ohmmeter (DVOM) is required to perform system tests.
SYMPTOM INDEX
| Condition | Perform Test | ||
|---|---|---|---|
| No Communication With Front Electronic Module | A | ||
| No Communication With Rear Electronic Module | B | ||
| No Communication With Instrument Cluster Module | C | ||
| No Communication With Driver's Door Module | D | ||
| One Low Beam Inoperative | E | ||
| One High Beam Inoperative | F | ||
| Both High Beams Inoperative | (1) | ||
| All Exterior Lights Are Inoperative | G | ||
| Low Beams On Continuously | H | ||
| Low Or High Beams Are On Continuously | I | ||
| Power Supply Relays Inoperative (All SSP Features) | J | ||
| Power Supply Relay/Switched System Power No. 1 | K | ||
| Power Supply Relay/Switched System Power No. 2 | L | ||
| Power Supply Relay/Switched System Power No. 3 | M | ||
| Power Supply Relay/Switched System Power No. 4 | N | ||
| Autolamps Inoperative | O | ||
| Autolamp Time Delay Inoperative | (1) | ||
| Autolamps On Continuously | P | ||
| Brake Lights Are Inoperative | Q | ||
| Right Rear Brakelight Inoperative | R | ||
| Left Rear Brakelight Inoperative | S | ||
| High Mounted Brakelight Inoperative | T | ||
| Left Rear Brakelight & Parking Lights Inoperative | U | ||
| Right Rear Brakelight & Parking Lights Inoperative | V | ||
| Brakelights On Continuously | W | ||
| Right Rear Brakelight On Continuously | X | ||
| Left Rear Brakelight On Continuously | Y | ||
| High-mounted Brakelight On Continuously | Z | ||
| Right Rear Turn Signal Light Never On | AA | ||
| Left Rear Turn Signal Light Never On | AB | ||
| Left Rear Turn Signal Light Always On | AC | ||
| Right Rear Turn Signal Light Always On | AD | ||
| Front Turn Signal/Hazard Light Never/Always On | AE | ||
| Front Hazard Lights Are Never/Always On | AF | ||
| Front Parking & Marker Lights Inoperative | AG | ||
| Left Rear Parking, Rear Or License Lights Inoperative | AH | ||
| Right Rear Parking Light Inoperative | AI | ||
| License Plate Lights Inoperative | AJ | ||
| Left Or Right Parking Lights & Turn Signals Inoperative | AK | ||
| Front Parking, Turn & Side Marker Lights Inoperative | AL | ||
| Front Parking/Turn, Sidemarker & Low Beam Headlights Inoperative | AM | ||
| Front Parking & Sidemarker Lights Inoperative | AN | ||
| License Plate Lights On Continuously | AO | ||
| Left Rear Parking Lights On Continuously | AP | ||
| Right Rear Parking Lights On Continuously | AQ | ||
| Fog Lights Inoperative | AR | ||
| Left Or Right Fog Light Inoperative | AS | ||
| Foglights On Continuously | AT | ||
| Back-Up Lights Inoperative | AU | ||
| Left Back-Up Light Inoperative | AV | ||
| Right Back-Up Light Inoperative | AW | ||
| Back-Up Lights On Continuously | AX | ||
| All Trailer Lights Inoperative | AY | ||
| Rear Trailer Lights Inoperative | AZ | ||
| Trailer Brake Or Turn Signal Lights Inoperative | BA | ||
| Trailer Lights Always On | BB | ||
| Courtesy Lights On Continuously | BC | ||
| Luggage Compartment Light On Continuously | BD | ||
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