Problems Creating Definiton File

I've determined that the A256 DATA Stream Specifications apply to my car but I'm not quite sure how to use the specs to crerate a defintion file. I'm mainly interested in being able to retrieve DTC's.

In the specs $E4 is indicated as the Message ID, is that what I should enter as the Module ID in the def file?

I created a Request named ALDL0 I noticed that the Request frame is automatically generated based on the Module ID entered, do I need to enter any parameters?

According to the specs:

Quote:

---

..HEAD03L NUMBER OF DATA WORDS - 21
..HEAD04L ALDL MODE 1 MESSAGE 2 RESPONSE
WORD# DATA NAME DESCRIPTION

1 NOMALFCT MALFUNCTION COUNTER
2 DGSFLHY0 HISTORY DIAGNOSTIC CODES BYTE 0
0 NOT USED
1 NOT USED
2 NOT USED
3 NOT USED
4 MALF CODE 98 INVALID PCM PROGRAM
5 MALF CODE 75 EGR1 SOLENOID ERROR
6 MALF CODE 76 EGR2 SOLENOID ERROR
7 MALF CODE 77 EGR3 SOLENOID ERROR

---

So would the start byte for this attribute be 0?

I have emailed you (not for your vehicle at all) the A274.DS file. Included in the software I believe there is a 274 vehicle definition, so using that in combination with attached specification document hopefully it might become apparent how to create the definitions.

Can I just enter the attributes that I'm interested in monitoring or do I have to enter all of the DATA Stream Specs for the ECM to communicate with EFILive?

I believe so. Yo just need to have the bit/word alignment correct I guess.

Hey Andrew, thanks for the responses they were helpful.