Question about 2003 Mitsubishi Galant

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03 galant service engine light came on today. is

03 galant service engine light came on today. is there a way to have the ecu or the instrument panel give out error codes? for example my 300zx will give codes that would tell me what the problem might be. info will be appreciated thank you.

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When the Check Engine light comes on, it means the vehicles onboard diagnostic system has sensed a problem. So, obviously you should try to find out what the problem is.Can be something as simple as a loose or defective gas cap,or a sreious problem such as a failing catalytic converter.

Although there may not be any symptoms, you can still damage your vehicle.

When the Service Engine Soon or Check Engine light comes on, you have a few options. You can take your car to the dealer and open your wallet, or, if you live near an AutoZone store, you can go there and they'll read the code for free. Then you can take that code to a site such as http://www.obd-codes.com/ or get a repair manual if you are going to attempt the repairs yourself. and search on that code. An example of a code is P0300 whick indicates a miss has been detected.



The site http://www.obd-codes.com/ is a great site that has some detailed articles on how to fix specific trouble codes. One thing just because a code indiactes a problem with a specific part .such as an EGR valve or TPS for example,dont just replace the part amay be suggested by the store giving you the free code reading. A code reading is onlt the first step in a diagnosis,proper testing using a DVOM,wiring diagrams,pressure and vacuum gages,are needed to avoid replacing unneeded parts.

Hope this help to solve it (remember rated this help). TY for using Fixya.

Posted on May 09, 2010

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2002 Mitsubishi Galant will not start, sometimes. This just started when I got home today. Car sat for about 1 hour then wouldnt start. Engine was turning over but would not start. Waited about an hour...


Check your fluids, oil and coolant. May need to check radiator fan operation. And check for trouble codes. If the cel light came on, it should set a code that can point to the problem.

Sep 05, 2013 | 2002 Mitsubishi Galant

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Yamaha yfz r125 engine light on constantly, but engine runs ok


Close but not quite.
ECU handles tacho not speedo.
Speedo has it's own pickup usually on rear wheel hub or hall sensor on output shaft if not flexible cable direct drive from front wheel

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2000 Celica GT AC and dashboard lights & gauges out suddenly (Together)


Here's how it should work: Power for the instrument panel comes from the 7.5A ECU-B fuse in the instrument panel junction box (I/PJB). A WHT/BLK wire from the instrument panel is grounded in that box. The I/PJB also contains a 5A WARNING fuse which is connected to the instrument panel by a RED/YEL wire. The 5A BKUP LAMP fuse supplies power on a RED/BLU wire to the vehicle speed sensor (combination meter) and a LT GRN wire from sensor is connected to the instrument panel. In addition, a LT GRN/RED wire from the instrument panel connects to the ECM. The YEL/GRN and RED/BLU wires from the instrument panel connect to the body ECU. There are three ground wires: two WHT/BLK and one BRN

Sep 20, 2012 | 2000 Toyota Celica

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My speedometer not working? is it cause of the after-market radio i put in be the reason.. mitsubishi galant 2002 6 cylinder


So we can rule out the speed sensor and its circuit to the PCM.

I just checked through another area of my database and it seems the speed sensor is systated as on the side of transaxle, near firewall, maybe you can dheck that out to confirm, just out of curiosity and for future reference and some portion of testing requires unplugging the conections.

Anyway I will provide a complete diagnostic pocedures for you to check through and hope an answer is found.

PS. After going through the diagnostic procedure, I believe your radio is the cause of the problem. Refer to # 10

SPEEDOMETER DOES NOT WORK

1. Connect scan tool to data link connector, check for Diagnostic Trouble Code (DTC). If DTC P0500 (Vehicle Speed Sensor) is set, diagnose this DTC first. Go to step 6 . If DTC P0500 is not set, go to next step.

2. On Eclipse, if trip odometer is not working normally, go to next step. If trip odometer is working normally go to step 5. On Galant, if tachometer is not working normally, go to next step. If tachometer is working normally, go to step 5

3. Disconnect instrument cluster connector. Turn ignition switch to ON position. Connect DVOM between ground and instrument cluster connector terminal No. 52 (Black/White wire) on Eclipse or terminal No.29 (Black/White wire) on Galant. If battery voltage is present, go to next step. If battery voltage is not present, check harness connectors and harness wiring between instrument cluster and ignition switch for damage. Repair as necessary.

4. Using a DVOM, check resistance between ground and instrument cluster harness connector terminal No. 34 (Black wire) on Eclipse or terminal No. 30 (Black wire) on Galant. If resistance is less than 2 ohms, replace instrument cluster printed circuit board or speedometer and tachometer. If resistance is greater than 2 ohms, check instrument cluster connector and harness wiring. Repair as necessary. If connector and wiring are okay, go to next step.

5. Disconnect vehicle speed sensor connector and instrument cluster connector. Turn ignition switch to ON position. Connect DVOM between ground and harness side of instrument cluster connector terminal No. 29 (White/Blue wire) on Eclipse or terminal No. 16 (Yellow/Black wire) on Galant. Voltage should be 5 volts. If voltage is okay, repair or replace instrument cluster printed circuit board or speedometer and tachometer. If voltage is not 5 volts, check instrument cluster connector and harness wiring. Repair as necessary. If connector and wiring are okay, go to next step.

6. Disconnect vehicle speed sensor harness connector and connect DVOM to harness side. Check vehicle speed sensor power supply voltage between terminal No. 1 (Black/White wire) on Eclipse or (Black/Blue wire) on Galant and ground. Battery voltage should be present. If voltage is okay, go to next step. If voltage is not present, check vehicle speed sensor harness connector and wiring. Repair as necessary.

7. Using DVOM, check resistance between ground and vehicle speed sensor harness connector terminal No. 2 (Black wire). Resistance should be less than 2 ohms. If resistance is greater than 2 ohms, check instrument cluster connector and harness wiring. Repair as necessary. If connector and wiring are okay, go to next step.

8. Disconnect vehicle speed sensor harness connector. Connect DVOM between ground and harness side terminal No. 3 (White/Blue wire) on Eclipse or (Yellow/Black wire) on Galant. If 9 volts are not present, check vehicle speed sensor harness connector and wiring. Repair as necessary. If 9 volts are present, go to next step.

9. Check harness wiring between vehicle speed sensor connector to radio and tape player connector, auto-cruise control ECU ECM (M/T) or PCM (A/T) connector and instrument cluster connector. If connectors or wiring are damaged, repair as necessary. If connectors and wiring are okay, go to next step.

CAUTION: To prevent damage to scan tool, always turn ignition off before connecting or disconnecting scan tool.

NOTE: If ECM (M/T) or PCM (A/T) is replaced, immobilizer-ECU should also be replaced. Each ECM (M/T) or PCM (A/T) has an encrypted code for immobilizer-ECU, and is registered in immobilizer-ECU.

10. Connect scan tool to data link connector. Turn ignition switch to ON position. Read DTC. Disconnect radio and tape player connector. If DTC P0500 does not reset, replace radio and tape player. If speedometer does not work, disconnect auto-cruise control ECU connector. If DTC P0500 does not reset, replace auto-cruise control ECU. If speedometer does not work, disconnect instrument cluster harness connector. If DTC P0500 does not reset, replace instrument cluster. If DTC P0500 resets when any connector is disconnected, replace ECM (M/T) or PCM (A/T).
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Sep 06, 2012 | Cars & Trucks

1 Answer

03 Range rover "engine service


Try this:


Switch ignition OFF


Press and Hold left instrument panel reset button, switch ignition ON to position 1


Keep reset button pressed for approximately 5 seconds until the LCD displays "RESET SIA".


The distance to service and the service type " Inspection" will be displayed.


To reset distance the left hand button should be pressed before the 'RESET' message has

flashed 5 times. The LCD will display 'END SIA'. Switch ignition off


The timing to do this is must be about 5 seconds, if this is not working you can try again.

Jun 21, 2011 | 2004 Land Rover Range Rover

1 Answer

2003 galant does not to start


If the starter does not turn over the engine, the battery is probably flat.

If it does, and the engine does not fire, its either
  • a spark problem. Most common fault is the spark coil system (distributor or coil pack) has failed.
  • a fuel problem. Check that fuel is reaching the engine.
  • a fuel pump relay problem. This is behind the dash, and fail occasionally.
  • an ECU problem. If the ECU is running there may be a Check Engine light on the dashboard. Read the ECU code for a diagnostic start suggestion.
  • the ECU is dead (which happens) it has to be replaced with one from a wrecker.

Jan 09, 2011 | 2003 Mitsubishi Galant

1 Answer

The check engine light stays on everytime. ECU has alrady been replaced.


HAVE VECHICLE SCANNED AGAIN YOUR ECU COULD BE WRONG ONE OR YOU NEED NEW ECU PROGRAMMED TO THE VECHICLE.IT DONT RECOGNIZE VECHICLE.

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1 Answer

Fuel Injector prob?


check your EGR valve a plugged up or not working will make it seem like its the injectors.

Jul 30, 2009 | 2003 Mitsubishi Galant

1 Answer

Service engine light came on and stayed on


check your maniful if its blocked or if there is dirt in your injection wires next to the injectors

Sep 10, 2008 | 2000 Mitsubishi Galant

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