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.
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HOMESERVICE MANUALSMITSUBISHI2001MIRAGE DE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMSPOWER DOOR LOCKS & KEYLESS ENTRY SYSTEMSSYSTEM TESTSTEST NO. 3
2001 Mitsubishi Mirage DE, Standard
Test No. 3
2001 Mitsubishi Mirage DE, StandardSECTION Test No. 3
- Check input signal. If using a voltmeter, go to next step. If using scan tool, install scan tool to DLC. Check left front door lock actuator and door lock key cylinder switch input signal. If scan tool buzzer does not sound once when switch is moved from LOCK to UNLOCK position, go to step 3 . If buzzer sounds, replace ETACS-ECU.
- Install Diagnostic Trouble Code Check Harness (MB991529) between DLC terminal No. 9 and terminal No. 4 or 5 (ground). Connect voltmeter to check harness. Operate left door lock actuator or door lock key cylinder switch to LOCK or UNLOCK position. If voltmeter needle deflects once when a switch is operated, go to next step. If voltmeter needle does not deflect, replace ETACS-ECU.
- Check left front door lock key cylinder and door lock actuator switch. See DOOR LOCK ACTUATOR and DOOR LOCK KEY CYLINDER SWITCH under COMPONENT TESTS. Replace as necessary. If switches are okay, go to next step.
- Check connectors and ground between left front door actuator or lock key cylinder switch and ETACS-ECU. Repair as necessary.
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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.