Trouble communicating

[vilant]

If you send me:
1. the 8th letter/digit of your VIN J
2. The engine RPO (like LT1 or LT5) LT 5
3. The engine size in liters (like 5.0) 5.7L, 350CI, V8
4. The year of manufacture 1990
then I can hopefully track down exactly which vehicle definition you should be using.

Regards
Paul

Thanks, Paul. I made the changes. Should I change the Suspend and Resume frames also? Tried it w/ both vehicle files and both w/ Max echo on and off. Here's zr1_1991 Max on
37:20.713: Check vehicle interface...
37:20.719: Waiting for Aldl bus silence of at least 15ms...
37:20.725: Requesting Max232 interface to acknowlege: $FF,$55,$AC...
37:20.729: Max232 interface detected OK

37:20.730: Scanning for heartbeat and chatter frames...
37:20.730: Waiting for Aldl bus silence of at least 15ms...
37:20.865: Com timeout: Data frame truncated: $41,$61,$00,$20,$00,$45,$45,$01,$00,$00,$00,$00,$0 0,$00,$00
37:20.874: Heartbeat frame:
37:20.874: 37:20.793: $F0,$56,$F1,$C9
37:20.874: Heartbeat frame is followed by 32ms of silence
37:20.874: Advisable value for T6 is 16ms

37:20.874: Chatter frame(s):
37:20.874: 37:20.825: $10,$59,$0A,$45,$00,$00,$48
37:20.874: 37:20.857: $40,$55,$6B

37:27.564: Start macro: Engine data: DATA
37:27.566: Synchronising ALDL communications...
37:27.566: Waiting for heartbeat: $F0,$56,$F1,$C9
37:27.566: Waiting for Aldl bus silence of at least 15ms...
37:27.683: Com timeout: Data frame truncated: $10,$59,$0A,$45,$00,$00,$44
37:27.689: Synchronising ALDL communications...
37:27.689: Waiting for heartbeat: $F0,$56,$F1,$C9
37:27.689: Waiting for Aldl bus silence of at least 15ms...
37:27.714: Com timeout: Data frame truncated: $41,$61,$00,$20,$00,$00,$44,$01,$00,$00,$00,$7A,$0 0,$40,$FA
37:27.720: Synchronising ALDL communications...
37:27.720: Waiting for heartbeat: $F0,$56,$F1,$C9
37:27.720: Waiting for Aldl bus silence of at least 15ms...
37:27.854: Com timeout: Data frame truncated: $F0,$56,$F1,$20
37:27.864: Stop macro: Engine data: DATA

And w/ Max off
39:14.646: Opening COM2 8228,8,N,1
39:30.124: Check vehicle interface...
39:30.131: Interface not checked because "Max232 echo" is not set. (see Com port settings)

39:30.131: Scanning for heartbeat and chatter frames...
39:30.131: Waiting for Aldl bus silence of at least 15ms...
39:30.308: Com timeout: Data frame truncated: $41,$61,$00,$20,$00,$45,$45,$00,$00,$00,$00,$00,$0 0,$00,$00
39:30.327: Heartbeat frame:
39:30.327: 39:30.274: $10,$59,$0A,$45,$00,$00,$48
39:30.327: Heartbeat frame is followed by 32ms of silence
39:30.327: Advisable value for T6 is 16ms

39:30.327: Chatter frame(s):
39:30.327: 39:30.306: $40,$55,$6B

39:32.545: Start macro: Engine data: DATA
39:32.553: Synchronising ALDL communications...
39:32.553: Waiting for heartbeat: $F0,$56,$F1,$C9
39:32.553: Waiting for Aldl bus silence of at least 15ms...
39:32.730: Com timeout: Data frame truncated: $41,$61,$00,$20,$00,$00,$48,$01,$00,$00,$00,$7A,$0 0,$40,$FA
39:32.744: Synchronising ALDL communications...
39:32.744: Waiting for heartbeat: $F0,$56,$F1,$C9
39:32.744: Waiting for Aldl bus silence of at least 15ms...
39:32.901: Com timeout: Expecting frame header byte
39:32.916: Synchronising ALDL communications...
39:32.916: Waiting for heartbeat: $F0,$56,$F1,$C9
39:32.916: Waiting for Aldl bus silence of at least 15ms...
39:32.948: Com timeout: Data frame truncated: $41,$61,$00,$20,$00,$45,$45,$01,$00,$00,$00,$7A,$0 0,$40,$FA
39:32.966: Stop macro: Engine data: DATA

[vilant]

With Corvette_Camaro_90_91 as vehicle file and Max on
55:24.912: Opening COM2 8228,8,N,1
55:35.702: Opening COM2 8228,8,N,1
55:57.124: Check vehicle interface...
55:57.130: Waiting for Aldl bus silence of at least 15ms...
55:57.136: Requesting Max232 interface to acknowlege: $FF,$55,$AC...
55:57.155: Max232 interface detected OK

55:57.156: Scanning for heartbeat and chatter frames...
55:57.156: Waiting for Aldl bus silence of at least 15ms...
55:57.276: Com timeout: Data frame truncated: $41,$61,$00,$20,$00,$45,$44,$01,$00,$00,$00,$00,$0 0,$00,$00
55:57.286: Heartbeat frame:
55:57.286: 55:57.235: $10,$59,$0A,$45,$00,$00,$48
55:57.286: Heartbeat frame is followed by 32ms of silence
55:57.286: Advisable value for T6 is 16ms

55:57.286: Chatter frame(s):
55:57.286: 55:57.267: $40,$55,$6B

56:02.669: Start macro: : ECM
56:02.685: Synchronising ALDL communications...
56:02.685: Waiting for heartbeat: $F0,$56,$F1,$C9
56:02.685: Waiting for Aldl bus silence of at least 15ms...
56:02.704: Com timeout: Data frame truncated: $10,$59,$0A,$45,$00,$00,$45
56:02.710: Synchronising ALDL communications...
56:02.710: Waiting for heartbeat: $F0,$56,$F1,$C9
56:02.710: Waiting for Aldl bus silence of at least 15ms...
56:02.736: Com timeout: Data frame truncated: $41,$61,$00,$45,$00,$00,$45,$01,$00,$00,$00,$7A,$0 0,$40,$FA
56:02.744: Synchronising ALDL communications...
56:02.744: Waiting for heartbeat: $F0,$56,$F1,$C9
56:02.744: Waiting for Aldl bus silence of at least 15ms...
56:02.938: Com timeout: Data frame truncated: $41,$61,$00,$20,$00,$45,$44,$01,$00,$00,$00,$7A,$0 0,$40,$FA
56:02.948: Stop macro: : ECM

And Max off

38:35.215: Opening COM2 8228,8,N,1
38:45.623: Check vehicle interface...
38:45.629: Interface not checked because "Max232 echo" is not set. (see Com port settings)

38:45.630: Scanning for heartbeat and chatter frames...
38:45.630: Waiting for Aldl bus silence of at least 15ms...
38:45.682: Com timeout: Data frame truncated: $41,$61,$00,$20,$00,$45,$00,$00,$00,$00,$00,$00,$0 0,$00,$00
38:45.698: Heartbeat frame:
38:45.698: 38:45.645: $10,$59,$0A,$45,$00,$00,$48
38:45.698: Heartbeat frame is followed by 32ms of silence
38:45.698: Advisable value for T6 is 16ms

38:45.698: Chatter frame(s):
38:45.698: 38:45.677: $40,$55,$6B

38:51.526: Start macro: : ECM
38:51.525: Synchronising ALDL communications...
38:51.525: Waiting for heartbeat: $F0,$56,$F1,$C9
38:51.525: Waiting for Aldl bus silence of at least 15ms...
38:51.542: Com timeout: Data frame truncated: $41,$61,$00,$20,$00,$45,$45,$01,$00,$00,$00,$7A,$0 0,$40,$FA
38:51.555: Synchronising ALDL communications...
38:51.555: Waiting for heartbeat: $F0,$56,$F1,$C9
38:51.555: Waiting for Aldl bus silence of at least 15ms...
38:51.690: Send: $F4,$57,$01,$00,$B4
38:51.714: Com timeout: Data frame truncated: $AB,$F4,$57,$01,$00,$B4,$00,$00,$00,$00,$00,$00,$0 0,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 0,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 0,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 0,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 0,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 0,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
38:51.740: Send: $F4,$57,$01,$00,$B4
38:51.754: Error: Reply frame checksum failure
38:51.764: Resuming normal ALDL communications...
38:51.773: Stop macro: : ECM

[Blacky]

This tells me that your Max232 cable definitely echos back the transmitted command (or else this would fail)

37:20.713: Check vehicle interface...
37:20.719: Waiting for Aldl bus silence of at least 15ms...
37:20.725: Requesting Max232 interface to acknowlege: $FF,$55,$AC...
37:20.729: Max232 interface detected OK

There is no vehicle definition that matches your vehicle exactly, you will need to construct one yourself. Its not difficult you just need to get the base data stream file A114.ds and open it using Windows notepad and use it as a reference when creating the EFILive vehicle definition. You can find the A114.ds file in the zip file: Aldlstuff.zip here: ftp://ftp.diy-efi.org/pub/gmecm/

The "Data frame truncated" errors are concerning, they should not be happening - regardless of what data stream file you have loaded.
Those errors indicate a physical fault in the connection somewhere between the laptop and the PCM. Or else the timings are still not right.

The "truncated" error occurs when the PC has "waited long enough" but the data has not finished being transmitted from the PCM. That can happen for 1 of two reasons:
1. There is a fault in the cabling causing the data to be lost. Since all the data will never arrive, the EFILive software eventually times out and gives the "truncated" error.
2. The timings are wrong, causing the EFILive software to not wait long enough.

To test whether the problem is being caused by reason 2, Set T1=0, T2=0 and T3=1000. That means EFILive will wait for at least 1 full second for a single frame to be transmitted. A frame will never, ever take more than 1 second to be transmitted. So if you still get truncation errors when T3=1000, then you have a hardware/connection/cabling/interface problem.

Regards
Paul

[vilant]

Ok I tried setting all values to 0 and T3 to 1000ms, T6 to 15ms and no chatter was detected. I changed T6 to 100ms and chatter was detected. I received errors but they were reply frame checksum failure in both files. Does that mean it's the connection or timing? Do I need to change the Suspend($F4,$56,$08,$AE) and Reply($F4,$56,$09,$AD) in the chatter. Here's snippet from both files
:32.369: Error: Reply frame checksum failure
02:32.375: Send: $F4,$57,$01,$00,$B4
02:32.481: Recv: $F4,$95,$01,$20,$F9,$00,$00,$00,$00,$00,$12,$20,$2 0,$57,$00,$28,$00,$00,$10,$00,$00,$00,$00,$FF,$43, $F2,$13,$74,$F1,$1E,$26,$66,$66,$80,$80,$00,$00,$0 0,$80,$80,$83,$00,$96,$FF,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 3,$8C,$00,$00,$19
02:32.491: Synchronising ALDL communications...
02:32.491: Waiting for heartbeat: $F0,$56,$F1,$C9
02:32.491: Waiting for Aldl bus silence of at least 100ms...
02:33.377: Error: Reply frame checksum failure
02:33.400: Send: $F4,$57,$01,$00,$B4
02:33.425: Error: Reply frame checksum failure
02:33.432: Error: No echo received from MAX232
02:33.569: Recv: $10,$59,$0A,$42,$00,$00,$4B
02:33.673: Synchronising ALDL communications...
02:33.673: Waiting for heartbeat: $F0,$56,$F1,$C9
02:33.673: Waiting for Aldl bus silence of at least 100ms...
02:34.578: Error: Reply frame checksum failure
02:34.593: Send: $F4,$57,$01,$00,$B4
02:35.427: Error: Reply frame checksum failure

And
04:28.750: Send: $F4,$57,$01,$00,$B4
04:28.849: Error: Reply frame checksum failure
04:28.867: Send: $F4,$57,$01,$00,$B4
04:28.960: Error: Reply frame checksum failure
04:28.967: Send: $F4,$57,$01,$00,$B4
04:28.975: Error: Max232 echo: $40,$55,$6B did not match command: $F4,$57,$01,$00,$B4
04:28.982: Recv: $F4,$57,$01,$00,$B4
04:28.986: Send: $F4,$57,$01,$00,$B4
04:28.991: Error: Reply frame checksum failure
04:28.997: Error: No echo received from MAX232
04:29.001: Error: Reply frame checksum failure
04:29.004: Send: $F4,$57,$01,$00,$B4
04:29.199: Error: Reply frame checksum failure
04:29.205: Error: No echo received from MAX232
04:29.343: Error: Reply frame checksum failure
04:29.346: Send: $F4,$57,$01,$00,$B4
04:29.545: Error: Reply frame checksum failure
04:29.653: Resuming normal ALDL communications...
04:29.723: Stop macro: : ECM

[Blacky]

I'm not sure what the settings for your vehicle should be but try these (I'm just clutching at straws now):

T1=0
T2=0
T3=100
T4=0
T5=10
T6=10

Set Suspend to: $F1,$56,$08,$B1
Set Resume to: $F1,$56,$09,$B0

Make sure the "Reply" checkbox after each one is ticked.

Turn on View->Serial I/O

Then start the ECM macro, let it run for about 5-10 seconds, then stop it if it hasn't stopped/errored by itself.
Copy all the text and paste it here.

Regards
Paul

[vilant]

There is no vehicle definition that matches your vehicle exactly, you will need to construct one yourself. Its not difficult you just need to get the base data stream file A114.ds and open it using Windows notepad and use it as a reference when creating the EFILive vehicle definition.

Easy is relative to your skill level, and mine's not so good, lol. But I'm up for it. I saved the base data easy enough. But when in V4, I don't see a way to create a new vehicle file. I guess that means I should alter an existing one?

[Blacky]

Easy is relative to your skill level, and mine's not so good, lol. But I'm up for it. I saved the base data easy enough. But when in V4, I don't see a way to create a new vehicle file. I guess that means I should alter an existing one?

Yes, you need to modify an existing one, by deleting the entire contents and entering your vehicle's info.
When saving the vehicle definition, the "Code" is used as the file name. I recommend using the code: A114 1990 LT5 5.7 which will make it easier to identify which vehicle the definition is for.



Hints:

1. Don't add comments to any parameter definitions - adding comments can cause the software to crash and the file you're working on will be corrupted.
2. Adding trouble codes and bit flags descriptions is tedious but read the documentation section: Reference->Requests->Attributes->DTCs (and/or Bit Flags). At the end of the page it describes how to quickly copy/paste up to 8 DTCs/Flags descriptions at a time.

Regards
Paul

[vilant]

Then start the ECM macro, let it run for about 5-10 seconds, then stop it if it hasn't stopped/errored by itself.
Copy all the text and paste it here.

Here's 1991zr1
24:44.854: Opening COM2 8228,8,N,1
25:07.293: Start macro: Engine data: DATA
25:07.300: Synchronising ALDL communications...
25:07.300: Waiting for heartbeat: $F0,$56,$F1,$C9
25:07.300: Waiting for Aldl bus silence of at least 10ms...
25:07.306: Start reading frame
25:07.381: Aldl frame header byte: $10
25:07.381: Aldl frame length byte: $59
25:07.397: Recv: $10,$59,$0A,$42,$00,$00,$4B
25:07.397: Finished reading frame
25:07.397: Frame: 0 = $10,$59,$0A,$42,$00,$00,$4B
25:07.397: Start reading frame
25:07.413: Aldl frame header byte: $40
25:07.413: Aldl frame length byte: $55
25:07.413: Recv: $40,$55,$6B
25:07.413: Finished reading frame
25:07.413: Frame: 1 = $40,$55,$6B
25:07.413: Start reading frame
25:07.413: Aldl frame header byte: $41
25:07.429: Aldl frame length byte: $61
25:07.445: Recv: $41,$61,$00,$20,$00,$42,$41,$01,$00,$00,$00,$7A,$0 0,$3C,$04
25:07.445: Finished reading frame
25:07.445: Frame: 2 = $41,$61,$00,$20,$00,$42,$41,$01,$00,$00,$00,$7A,$0 0,$3C,$04
25:07.445: Start reading frame
25:07.540: Com timeout: Expecting frame header byte
25:07.573: No heartbeat found - ALDL not synchronised yet
25:07.576: Synchronising ALDL communications...
25:07.576: Waiting for heartbeat: $F0,$56,$F1,$C9
25:07.576: Waiting for Aldl bus silence of at least 10ms...
25:07.587: Start reading frame
25:07.589: Aldl frame header byte: $10
25:07.589: Aldl frame length byte: $59
25:07.589: Recv: $10,$59,$0A,$42,$00,$00,$4B
25:07.589: Finished reading frame
25:07.589: Frame: 0 = $10,$59,$0A,$42,$00,$00,$4B
25:07.589: Start reading frame
25:07.621: Aldl frame header byte: $40
25:07.621: Aldl frame length byte: $55
25:07.621: Recv: $40,$55,$6B
25:07.621: Finished reading frame
25:07.621: Frame: 1 = $40,$55,$6B
25:07.621: Start reading frame
25:07.621: Aldl frame header byte: $41
25:07.621: Aldl frame length byte: $61
25:07.637: Recv: $41,$61,$00,$20,$00,$42,$41,$01,$00,$00,$00,$7A,$0 0,$3B,$05
25:07.637: Finished reading frame
25:07.637: Frame: 2 = $41,$61,$00,$20,$00,$42,$41,$01,$00,$00,$00,$7A,$0 0,$3B,$05
25:07.637: Start reading frame
25:07.743: Com timeout: Expecting frame header byte
25:07.808: No heartbeat found - ALDL not synchronised yet
25:07.811: Synchronising ALDL communications...
25:07.811: Waiting for heartbeat: $F0,$56,$F1,$C9
25:07.811: Waiting for Aldl bus silence of at least 10ms...
25:07.821: Start reading frame
25:07.829: Aldl frame header byte: $40
25:07.829: Aldl frame length byte: $55
25:07.829: Recv: $40,$55,$6B
25:07.829: Finished reading frame
25:07.829: Frame: 0 = $40,$55,$6B
25:07.829: Start reading frame
25:07.829: Aldl frame header byte: $41
25:07.829: Aldl frame length byte: $61
25:07.845: Recv: $41,$61,$00,$20,$00,$42,$41,$01,$00,$00,$00,$7A,$0 0,$3B,$05
25:07.845: Finished reading frame
25:07.845: Frame: 1 = $41,$61,$00,$20,$00,$42,$41,$01,$00,$00,$00,$7A,$0 0,$3B,$05
25:07.845: Start reading frame
25:07.946: Com timeout: Expecting frame header byte
25:08.002: No heartbeat found - ALDL not synchronised yet
25:08.009: Stop macro: Engine data: DATA

and Corvettecamaro9091
25:24.622: Opening COM2 8228,8,N,1
25:34.169: Opening COM2 8228,8,N,1
25:54.211: Start macro: : ECM
25:54.225: Synchronising ALDL communications...
25:54.225: Waiting for heartbeat: $F0,$56,$F1,$C9
25:54.225: Waiting for Aldl bus silence of at least 10ms...
25:54.240: Start reading frame
25:54.256: Aldl frame header byte: $10
25:54.256: Aldl frame length byte: $59
25:54.272: Recv: $10,$59,$0A,$42,$00,$00,$4B
25:54.272: Finished reading frame
25:54.272: Frame: 0 = $10,$59,$0A,$42,$00,$00,$4B
25:54.272: Start reading frame
25:54.288: Aldl frame header byte: $40
25:54.288: Aldl frame length byte: $55
25:54.288: Recv: $40,$55,$6B
25:54.288: Finished reading frame
25:54.288: Frame: 1 = $40,$55,$6B
25:54.288: Start reading frame
25:54.288: Aldl frame header byte: $41
25:54.288: Aldl frame length byte: $61
25:54.304: Recv: $41,$61,$00,$20,$00,$42,$42,$01,$00,$00,$00,$7A,$0 0,$3C,$03
25:54.304: Finished reading frame
25:54.304: Frame: 2 = $41,$61,$00,$20,$00,$42,$42,$01,$00,$00,$00,$7A,$0 0,$3C,$03
25:54.304: Start reading frame
25:54.412: Com timeout: Expecting frame header byte
25:54.487: No heartbeat found - ALDL not synchronised yet
25:54.491: Synchronising ALDL communications...
25:54.491: Waiting for heartbeat: $F0,$56,$F1,$C9
25:54.491: Waiting for Aldl bus silence of at least 10ms...
25:54.505: Start reading frame
25:54.512: Aldl frame header byte: $ 0
25:54.512: Aldl frame length byte: $7A
25:54.615: Com timeout: Data frame truncated: $00,$7A,$00,$3C,$03,$42,$42,$01,$00,$00,$00,$7A,$0 0,$3C,$03,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 0,$00,$00
25:54.637: No heartbeat found - ALDL not synchronised yet
25:54.640: Synchronising ALDL communications...
25:54.640: Waiting for heartbeat: $F0,$56,$F1,$C9
25:54.640: Waiting for Aldl bus silence of at least 10ms...
25:54.646: Start reading frame
25:54.656: Aldl frame header byte: $10
25:54.656: Aldl frame length byte: $59
25:54.656: Recv: $10,$59,$0A,$42,$00,$00,$4B
25:54.656: Finished reading frame
25:54.656: Frame: 0 = $10,$59,$0A,$42,$00,$00,$4B
25:54.656: Start reading frame
25:54.688: Aldl frame header byte: $40
25:54.688: Aldl frame length byte: $55
25:54.688: Recv: $40,$55,$6B
25:54.688: Finished reading frame
25:54.688: Frame: 1 = $40,$55,$6B
25:54.688: Start reading frame
25:54.688: Aldl frame header byte: $41
25:54.688: Aldl frame length byte: $61
25:54.704: Recv: $41,$61,$00,$20,$00,$42,$42,$01,$00,$00,$00,$7A,$0 0,$3C,$03
25:54.704: Finished reading frame
25:54.704: Frame: 2 = $41,$61,$00,$20,$00,$42,$42,$01,$00,$00,$00,$7A,$0 0,$3C,$03
25:54.704: Start reading frame
25:54.802: Com timeout: Expecting frame header byte
25:54.877: No heartbeat found - ALDL not synchronised yet
25:54.884: Stop macro: : ECM

[Blacky]

Try deleting the heartbeat frame and doing that same test again. There's no need to do the test with both files, either file will do.

By deleting the heartbeat frame I think that will cause the software to not wait for any heartbeat frame.

The reasons I think we should not wait for the heartbeat frame are:
1. it only occurs every 1000ms. The software gives up looking for the heartbeat frame before then.
2. the ALDL bus chatter is very light making it easy enough to find some silence in which to send the suspend command.

Sorry to have you do all this testing, I am away from the office right now and don't have access to any test equipment or I would do all this testing myself.

Regards
Paul

[vilant]

Please, you've done so much already, and it is appreciated believe me. I'll start working on the new vehicle file tomorrow night. Hopefully it won't take more than a few days(can only do a little bit at a time). Just so you now everything I've been doing has been with USB cable in normal (it comes with pins you can jumper out for shorting pins together,). According to the instructions for the cable a 10Kohm resistor can be jumped between A and B pins (but my car wasn't listed in their list of cars you would need to this for). I also purchased the FSM for my car, I did some reading and found the 12 pin layout in ALDL conn. A=ground, B=ECM Diagnostic, C=Ride Control Diagnostic, D and E not used, F=T.C.C.(Vin 8), G=CCM Diagnostic, H=Antilock brake, J=E&C Bus data, K=SIR Serial data, M=Serial data. You can read codes by jumping A and B together and count how many times the SES light flashes. We shouldn't have to jump A and B together because the data comes from pin M correct? Anyway here's what got with no heartbeat.
49:00.167: Updating vehicle information...
49:00.283: Opening COM2 8228,8,N,1
49:47.090: Start macro: Engine data: DATA
49:47.094: Heartbeat not specified - no synchronisation performed
49:47.094: Send suspend command: $F1,$56,$08,$B1
49:47.094: Start writing frame
49:47.094: Send: $F1,$56,$08,$B1
49:47.095: Finished writing frame
49:47.095: Wait 10 ms after writing, before reading...
49:47.105: Start reading frame
49:47.108: Aldl frame header byte: $F1
49:47.108: Aldl frame length byte: $56
49:47.108: Recv: $F1,$56,$08,$B1
49:47.108: Finished reading frame
49:47.108: MAX232 echo: $F1,$56,$08,$B1
49:47.108: Wait 10 ms after writing, before reading...
49:47.118: Start reading frame
49:47.219: Aldl frame header byte: $10
49:47.219: Aldl frame length byte: $59
49:47.219: Recv: $10,$59,$0A,$43,$00,$00,$4A
49:47.219: Finished reading frame
49:47.220: Start writing frame
49:47.220: Send: $F4,$57,$01,$00,$B4
49:47.220: Finished writing frame
49:47.220: Wait 10 ms after writing, before reading...
49:47.230: Start reading frame
49:47.235: Aldl frame header byte: $F4
49:47.235: Aldl frame length byte: $57
49:47.235: Recv: $F4,$57,$01,$00,$B4
49:47.235: Finished reading frame
49:47.235: MAX232 echo: $F4,$57,$01,$00,$B4
49:47.235: Wait 10 ms after writing, before reading...
49:47.245: Start reading frame
49:47.246: Aldl frame header byte: $F4
49:47.246: Aldl frame length byte: $95
49:47.318: Recv: $F4,$95,$01,$FE,$7F,$75,$6B,$30,$20,$40,$22,$4C,$4 8,$15,$20,$25,$40,$40,$88,$80,$00,$00,$00,$FF,$43, $F2,$13,$72,$F1,$1E,$25,$66,$66,$80,$80,$00,$00,$0 0,$80,$80,$83,$00,$96,$FF,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 3,$74,$00,$00,$34
49:47.318: Error: Reply frame checksum failure
49:47.386: Finished reading frame
49:47.386: Aborting request due to previous error
49:47.401: Start writing frame
49:47.401: Send: $F4,$57,$01,$00,$B4
49:47.401: Finished writing frame
49:47.401: Wait 10 ms after writing, before reading...
49:47.411: Start reading frame
49:47.413: Aldl frame header byte: $F4
49:47.413: Aldl frame length byte: $57
49:47.413: Recv: $F4,$57,$01,$00,$B4
49:47.413: Finished reading frame
49:47.413: MAX232 echo: $F4,$57,$01,$00,$B4
49:47.413: Wait 10 ms after writing, before reading...
49:47.423: Start reading frame
49:47.423: Aldl frame header byte: $F4
49:47.423: Aldl frame length byte: $95
49:47.521: Com timeout: Data frame truncated: $F4,$95,$FF,$B4,$7F,$2A,$63,$20,$20,$6A,$22,$24,$4 8,$15,$30,$25,$40,$40,$88,$80,$00,$00,$00,$FF,$43, $F2,$93,$F1,$DF,$6D,$96,$16,$38,$30,$40,$40,$80,$C 0,$80,$83,$00,$96,$FF,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$03,$7 4,$00,$00,$34,$00
49:47.577: Aborting request due to previous error
49:47.581: Start writing frame
49:47.581: Send: $F4,$57,$01,$00,$B4
49:47.581: Finished writing frame
49:47.581: Wait 10 ms after writing, before reading...
49:47.591: Start reading frame
49:47.591: Aldl frame header byte: $F4
49:47.591: Aldl frame length byte: $57
49:47.592: Recv: $F4,$57,$01,$00,$B4
49:47.592: Finished reading frame
49:47.592: MAX232 echo: $F4,$57,$01,$00,$B4
49:47.592: Wait 10 ms after writing, before reading...
49:47.602: Start reading frame
49:47.606: Aldl frame header byte: $F4
49:47.606: Aldl frame length byte: $95
49:47.708: Com timeout: Data frame truncated: $F4,$95,$01,$20,$F9,$00,$00,$00,$00,$00,$12,$20,$2 0,$57,$00,$28,$00,$04,$FC,$10,$59,$1A,$D3,$47,$F6, $17,$72,$F1,$1E,$25,$66,$66,$80,$80,$00,$00,$00,$8 0,$80,$83,$00,$96,$40,$55,$6B,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$03,$74,$0 0,$00,$30,$00,$00
49:47.764: Aborting request due to previous error
49:47.768: Resuming normal ALDL communications...
49:47.768: Send resume command: $F1,$56,$09,$B0
49:47.768: Start writing frame
49:47.768: Send: $F1,$56,$09,$B0
49:47.769: Finished writing frame
49:47.769: Wait 10 ms after writing, before reading...
49:47.779: Start reading frame
49:47.782: Aldl frame header byte: $F1
49:47.782: Aldl frame length byte: $56
49:47.782: Recv: $F1,$56,$09,$B0
49:47.782: Finished reading frame
49:47.782: MAX232 echo: $F1,$56,$09,$B0
49:47.782: Wait 10 ms after writing, before reading...
49:47.792: Start reading frame
49:47.830: Aldl frame header byte: $10
49:47.830: Aldl frame length byte: $59
49:47.830: Recv: $10,$59,$0A,$43,$00,$00,$4A
49:47.830: Finished reading frame
49:47.832: Stop macro: Engine data: DATA