Inspection Procedure 1

2005 Mitsubishi Lancer L4-2.4L SOHCSECTION Inspection Procedure 1
When the Brake Pedal is Depressed, Auto-cruise Control is not Cancelled.

COMMENT
The stoplight switch circuit is suspected.

TROUBLESHOOTING HINTS (The most likely causes for this case:)
- Malfunction of the stoplight switch.
- Damaged harness or connector.
- Malfunction of the ECM .
- Malfunction of the PCM .

DIAGNOSIS
Refer to Diagnostic Trouble Code Procedures - DTC 22: Stoplight Switch System.

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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.