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 LS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - SELF-DIAGNOSTICSDIAGNOSTIC TESTSDTC P1500: GENERATOR FR TERMINAL CIRCUIT MALFUNCTIONDIAGNOSTIC PROCEDURE
2001 Mitsubishi Mirage LS, 4D Sedan, Standard
Diagnostic Procedure
2001 Mitsubishi Mirage LS, 4D Sedan, StandardSECTION Diagnostic Procedure
- Start engine and let idle. Ensure radiator fan, headlights, rear defogger and stoplights are off. Backprobe and check voltage between generator field connector terminal No. 4. See Figure . In sequence, turn headlights, rear defogger and stoplights on. Voltage should drop when accessories are turned on. If voltage does not drop, go to next step. If voltage drops, replace ECM. go to step 4 .
- Turn ignition off. Disconnect generator field 4-pin harness connector. Turn ignition on. Check harness side voltage between generator field harness connector terminal No. 4 (White wire) and ground. Voltage should be 4.8-5.2 volts. If voltage is not as specified, go to next step. If voltage is as specified, check for loose or poor connection at generator field harness connector. If problem exists, repair connector or wiring as necessary. If problem does not exist, replace generator. Go to step 4 .
- Check for open, short, loose or poor connection in White wire between generator field connector, intermediate connector A26 (M/T) or A24 (A/T) and ECM connector B39 terminal No. 41 (M/T) or B76 terminal No. 54 (A/T). Intermediate connector is locacated in harness at transmission. If problem exists, repair connectors or wiring as necessary. If problem does not exist, replace ECM. Go to next step.
- Verify repair by driving vehicle according to other monitor drive cycle and check for DTCs. See OTHER MONITOR under OBD-II DRIVE CYCLES under VERIFYING REPAIRS. If DTC P1500 resets, return to step. 1 . If DTC P1500 does not reset, repair is complete.
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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.