OBD2 Scanner can not detect ECU 2002 Mitsubishi Lancer

Question

I bought a OBD2 Bluetooth scanner online. However, when I connect it to the OBD2 port in the car, the app while connecting to the OBD2 scanner gives an error message that it cannot connect to the cars ECU. I do not have the engine light on but would like to check whether the scanner works or the ECU is not bad.

Please find the attached image of the protocols the device supports.

Could anyone let me know where the issue lies? I thought the ECU fuse may have gone.

Thanks & Best Regards

Michael

narkeleptk · Answer

I would first wiggle or apply slight pressure to the connector while you are trying to connect. It could possibly just be from loose connection with the obd port. This is common on older vehicles

Your lancer's year & model should be doing diagnostics through K-line (obd2 pin 7) So probably ISO 14230 or ISO 9141 protocol. Check to see if your device supports these, its possible it only supports CAN style diagnostics found on most 2006+ models.

If your device does support KLINE protocols but fails then you should consider using a digital multi meter and doing a continuity check on the diagnostics wire between your obd2 and pcm to see if you have a broken wire.

There is no fuse that would block diagnostics only power to the device or your pcm. If this was the case then your engine would not run and/or your device would not power on.

https://en.wikipedia.org/wiki/On-board_diagnostics

OBD2 Scanner can not detect ECU 2002 Mitsubishi Lancer

One Answer

Add your own answers!

Ask a Question