System Tests: Notes

1999 Ford Crown Victoria LX, 4.6 9SECTION Notes
SYMPTOM CHART

Symptom Perform Test
Cruise Control Is Inoperative A 
Set Speed Fluctuates B 
Cruise Control Does Not Disengage When Brakes Are Applied C 
COAST Switch Inoperative D 
SET/ACCEL Switch Inoperative E 
RESUME Switch Inoperative F 
OFF Switch Inoperative G 
No Dynamic Pull Occurs At Throttle (1)H 
Brake Pedal Position Switch Failure (Flash Code 2) (1)I 
Deactivator Switch Circuit Failure (Flash Code 3) (1)J 
Vehicle Speed Sensor Circuit Failure (Flash Code 4) (1)K 
CRUISE CONTROL Light Inoperative (1)(2)
CRUISE CONTROL Light Always On (1)(2)
(1) This test only applies to vehicle equipped with electronic instrument clusters.
(2) Manufacturer does not provide testing information. Check circuitry, bulb, instrument cluster and cruise control servo/actuator as possible causes.
RENDER: 1.0x

NO RELATED

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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.