Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 Lincoln Town Car BaseFACTORY OEM SERVICE PROCEDURE
Cruise Control System DTCS
CRUISE CONTROL DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTCS | Description | DTC Caused By | Perform Test |
|---|---|---|---|
| B1318 | Battery Voltage Low | Speed Control Servo | Go To PINPOINT TEST C: DTC 1318 - BATTERY VOLTAGE LOW . |
| B1342 | ECU Is Defective | Speed Control Servo | INSTALL a new speed control servo. REFER to Actuator - Speed Control Servo . REPEAT the Self-Test. |
| C1109 | Throttle Position Did Not Return to Idle After Self-Test | Speed Control Servo | Go To PINPOINT TEST D: DTC C1109 - THROTTLE POSITION DID NOT RETURN TO IDLE AFTER SELF-TEST . |
| C1126 | Speed Control Actuator Switch Stuck for Two Minutes or Longer | Speed Control Servo | Go To PINPOINT TEST E: DTC C1126 - SPEED CONTROL ACTUATOR SWITCH STUCK FOR TWO MINUTES OR LONGER . |
| C1127 | Deactivator Switch Circuit Failure | Speed Control Servo | Go To PINPOINT TEST F: DTC C1127 - DEACTIVATOR SWITCH CIRCUIT FAILURE . |
| C1179 | Speed Control Cable Slack Failure | Speed Control Servo | Go To PINPOINT TEST G: DTC C1179 - SPEED CONTROL CABLE SLACK FAILURE . |
| U1027 | SCP Invalid or Missing Data for Engine RPM | PCM | CARRY OUT the PCM Self-Test. |
| U1041 | SCP Invalid or Missing Data for Vehicle Speed | ABS | CARRY OUT the ABS Self-Test. |
| U1051 | SCP Invalid or Missing Data for Brakes | LCM | CARRY OUT the LCM Self-Test. |
| U1059 | SCP Invalid or Missing Data for Transmission/Transaxle/PRNDL | PCM | CARRY OUT the PCM Self-Test. |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.