OBD2 issues on an 04 wrx???

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Jul 10, 2003 | 12:36 PM

ridetonoend

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OBD2 issues on an 04 wrx???

Has anyone had any issues tapping into the ecu and setting off any alarms on the OBD2 system. Only reason i ask is i know the system works off of resistor readings in the wires. any info would be great.

Jul 11, 2003 | 06:46 AM

ridetonoend

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???????

Can someone please give me a heads up on this. Is this either a stupid question or no one really knows about it.

chris

Jul 11, 2003 | 12:33 PM

ImprezaRSDriver

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Joined: Nov 2002

Posts: 955

From: Mann Engineering, Santa Clara, CA

Car Info: 13BRZ, 11FXT, 08T25, 07STI, 02WRX

The circuit does not read resistor readings, it reads voltages. Changing resistor values will change the voltage being read.

If you have looked around you would know that a way to solve many CEL problems is to use a resistor such that you are tricking the ECU to reading a value that it is expecting.

What do you mean by tapping into the ECU? Do you mean reading the fuel maps?