Ignition Dwell - New Definitions

elevenpoint7five · **Posted:** Sat Dec 11, 2010 4:40 pm

wrxspeed wrote:

elevenpoint7five wrote:

wrxspeed wrote:

BTW cobb has a missfire treshold table base on RPM and load

Does it look something like this? The numbers are probably different as I haven't applied an expression to that, but I'll bet it follows that pattern huh? ;-)

Attachment:

misfire.JPG

Andy

Hey Andy is there a way that i can add the above table to any 02-05 wrx rom?..... it can help out alot with the fake missfires due to big cams on low loads.

It's something I am hoping to have time to work on this winter. I'll keep you posted.

bcheck555 · **Joined:** Thu Jan 29, 2009 3:16 pm **Posts:** 523

Welcome back elevenpoint7five.

elevenpoint7five · **Posted:** Thu Dec 16, 2010 1:16 am

bcheck555 wrote:

Welcome back elevenpoint7five.

Thanks! I miss the forums in the summer time when I don't have time for anything but work!

I think I've got the misfire tables all figured out, just need someone to test for me.

Andy

Merp · **Joined:** Thu Jul 23, 2009 5:46 pm **Posts:** 863

Bump!

I was digging through some ATU code for channel 8 one shot pulse, and I stumbled over a reference to battery voltage with what looked like a map pull.

Code:

 ; incoming r4 determines which channel/subchannel
ROM:0000A828
ROM:0000A828 SBR_ATU_CH2_CH8_settings:               ; CODE XREF: ROM:0000A1B6p
ROM:0000A828                                         ; sub_A4E0+94p ...
ROM:0000A828                 mov.l   r14, @-r15
ROM:0000A82A                 sts.l   pr, @-r15
ROM:0000A82C                 mov.l   #ATU_Channel8_Ch2_addresses, r2 ; dcnt8i
ROM:0000A82E                 add     #-4, r15
ROM:0000A830                 mov.b   r4, @r15
ROM:0000A832                 mov.b   @r15, r14
ROM:0000A834                 extu.b  r14, r14
ROM:0000A836                 mov     r14, r3
ROM:0000A838                 shll    r14
ROM:0000A83A                 add     r3, r14
ROM:0000A83C                 mov.w   #h'7FFF, r3
ROM:0000A83E                 shll2   r14
ROM:0000A840                 shll    r14
ROM:0000A842                 add     r2, r14
ROM:0000A844                 mov.l   @(h'C,r14), r4
ROM:0000A846                 mov.w   @r4, r4
ROM:0000A848                 add     r3, r4
ROM:0000A84A                 mov.l   @(4,r14), r1
ROM:0000A84C                 mov.w   r4, @r1
ROM:0000A84E                 mov.l   #loc_8000, r0
ROM:0000A850                 mov.l   @(8,r14), r3
ROM:0000A852                 add     r0, r4
ROM:0000A854                 mov.w   r4, @r3
ROM:0000A856                 mov.l   #sub_E558, r1
ROM:0000A858                 jsr     @r1 ; sub_E558
ROM:0000A85A                 mov.l   @r14, r4
ROM:0000A85C                 mov.b   @r15, r4
ROM:0000A85E                 mov     #1, r0
ROM:0000A860                 mov.l   #E_FFFF5DEC_Possible_ATU_Signal, r3
ROM:0000A862                 extu.b  r4, r4
ROM:0000A864                 shll2   r4
ROM:0000A866                 shll    r4
ROM:0000A868                 add     r3, r4
ROM:0000A86A                 mov.b   r0, @(5,r4)
ROM:0000A86C                 mov     #0, r0
ROM:0000A86E                 mov.b   r0, @(6,r4)
ROM:0000A870                 add     #4, r15
ROM:0000A872                 lds.l   @r15+, pr
ROM:0000A874                 rts
ROM:0000A876                 mov.l   @r15+, r14
ROM:0000A876 ; End of function SBR_ATU_CH2_CH8_settings
ROM:0000A876
ROM:0000A878 ; ---------------------------------------------------------------------------
ROM:0000A878 ; START OF FUNCTION CHUNK FOR sub_A2E8
ROM:0000A878
ROM:0000A878 loc_A878:                               ; CODE XREF: sub_A2E8+4Cj
ROM:0000A878                                         ; sub_A4DCj
ROM:0000A878                 sts.l   pr, @-r15
ROM:0000A87A                 mov.l   #E_SSM_Battery_Volts, r3
ROM:0000A87C                 mov.l   #unk_FFFF5CEC, r2
ROM:0000A87E                 fmov.s  @r3, fr5
ROM:0000A880                 mov.l   #Table_IgnDwell_unk, r4
ROM:0000A882                 mov.l   #sub_21B0, r1
ROM:0000A884                 jsr     @r1 ; sub_21B0
ROM:0000A886                 fmov.s  @r2, fr4
ROM:0000A888                 mov.l   #E_FFFF5E1C_Possible_ATU_Signal, r3
ROM:0000A88A                 lds.l   @r15+, pr
ROM:0000A88C                 rts
ROM:0000A88E                 mov.w   r0, @r3
ROM:0000A88E ; END OF FUNCTION CHUNK FOR sub_A2E8
ROM:0000A88E ; ---------------------------------------------------------------------------
ROM:0000A890 word_A890:      .data.w h'7FFF          ; DATA XREF: SBR_ATU_CH2_CH8_settings+14r
ROM:0000A892                 .data.w h'FFFF
ROM:0000A894 dword_A894:     .data.l h'FFFF          ; DATA XREF: sub_A5C6+23Er
ROM:0000A898 off_A898:       .data.l sub_2098        ; DATA XREF: sub_A5C6:loc_A814r
ROM:0000A89C off_A89C:       .data.l ATU_Channel8_Ch2_addresses
ROM:0000A89C                                         ; DATA XREF: SBR_ATU_CH2_CH8_settings+4r
ROM:0000A89C                                         ; dcnt8i
ROM:0000A8A0 dword_A8A0:     .data.l h'8000          ; DATA XREF: SBR_ATU_CH2_CH8_settings+26r
ROM:0000A8A4 off_A8A4:       .data.l sub_E558        ; DATA XREF: SBR_ATU_CH2_CH8_settings+2Er
ROM:0000A8A8 off_A8A8:       .data.l E_FFFF5DEC_Possible_ATU_Signal
ROM:0000A8A8                                         ; DATA XREF: SBR_ATU_CH2_CH8_settings+38r
ROM:0000A8AC off_A8AC:       .data.l E_SSM_Battery_Volts ; DATA XREF: sub_A2E8+592r
ROM:0000A8B0 off_A8B0:       .data.l unk_FFFF5CEC    ; DATA XREF: sub_A2E8+594r
ROM:0000A8B4 off_A8B4:       .data.l Table_IgnDwell_unk ; DATA XREF: sub_A2E8+598r
ROM:0000A8B8 off_A8B8:       .data.l sub_21B0        ; DATA XREF: sub_A2E8+59Ar
ROM:0000A8BC off_A8BC:       .data.l E_FFFF5E1C_Possible_ATU_Signal
ROM:0000A8BC                                         ; DATA XREF: sub_A2E8+5A0r

Code:

ROM:00096690 Table_IgnDwell_unk:.data.w h'10         ; DATA XREF: sub_A2E8+598o
ROM:00096690                                         ; ROM:off_A8B4o
ROM:00096692                 .data.w 5
ROM:00096694                 .data.l IgnDwell_RPM_axis_unk
ROM:00096698                 .data.l IgnDwell_Volts_axis_unk
ROM:0009669C                 .data.l IgnDwell_Data_unk
ROM:000966A0                 .data.l 0

Code:

ROM:000CF458 IgnDwell_RPM_axis_unk:.data.l h'43FA0000 ; DATA XREF: ROM:00096694o
ROM:000CF45C                 .data.l h'447A0000
ROM:000CF460                 .data.l h'44BB8000
ROM:000CF464                 .data.l h'44FA0000
ROM:000CF468                 .data.l h'451C4000
ROM:000CF46C                 .data.l h'453B8000      ; 500-8000
ROM:000CF470                 .data.l h'455AC000
ROM:000CF474                 .data.l h'457A0000
ROM:000CF478                 .data.l h'458CA000
ROM:000CF47C                 .data.l h'459C4000
ROM:000CF480                 .data.l h'45ABE000
ROM:000CF484                 .data.l h'45BB8000
ROM:000CF488                 .data.l h'45CB2000
ROM:000CF48C                 .data.l h'45DAC000
ROM:000CF490                 .data.l h'45EA6000
ROM:000CF494                 .data.l h'45FA0000
ROM:000CF498 IgnDwell_Volts_axis_unk:.data.l h'41000000 ; DATA XREF: ROM:00096698o
ROM:000CF49C                 .data.l h'41200000
ROM:000CF4A0                 .data.l h'41400000      ; float 8-16
ROM:000CF4A4                 .data.l h'41600000
ROM:000CF4A8                 .data.l h'41800000
ROM:000CF4AC IgnDwell_Data_unk:.data.w h'AB0         ; DATA XREF: ROM:0009669Co
ROM:000CF4AE                 .data.w h'AB0
ROM:000CF4B0                 .data.w h'AB0
ROM:000CF4B2                 .data.w h'9A0
ROM:000CF4B4                 .data.w h'830
ROM:000CF4B6                 .data.w h'730
ROM:000CF4B8                 .data.w h'680
ROM:000CF4BA                 .data.w h'600
ROM:000CF4BC                 .data.w h'590
ROM:000CF4BE                 .data.w h'520
ROM:000CF4C0                 .data.w h'4E0
ROM:000CF4C2                 .data.w h'4A0
ROM:000CF4C4                 .data.w h'460
ROM:000CF4C6                 .data.w h'420
ROM:000CF4C8                 .data.w h'3F0
ROM:000CF4CA                 .data.w h'3C0
ROM:000CF4CC                 .data.w h'950
ROM:000CF4CE                 .data.w h'950
ROM:000CF4D0                 .data.w h'840
ROM:000CF4D2                 .data.w h'6E0
ROM:000CF4D4                 .data.w h'610
ROM:000CF4D6                 .data.w h'580
ROM:000CF4D8                 .data.w h'500
ROM:000CF4DA                 .data.w h'4C0
ROM:000CF4DC                 .data.w h'470
ROM:000CF4DE                 .data.w h'430
ROM:000CF4E0                 .data.w h'400
ROM:000CF4E2                 .data.w h'3D0
ROM:000CF4E4                 .data.w h'3B0
ROM:000CF4E6                 .data.w h'390
ROM:000CF4E8                 .data.w h'360
ROM:000CF4EA                 .data.w h'350
ROM:000CF4EC                 .data.w h'7F0
ROM:000CF4EE                 .data.w h'7E0
ROM:000CF4F0                 .data.w h'620
ROM:000CF4F2                 .data.w h'550
ROM:000CF4F4                 .data.w h'4B0
ROM:000CF4F6                 .data.w h'440
ROM:000CF4F8                 .data.l h'40003B0, h'3900360, h'3400320, h'30002E0, h'2D002C0
ROM:000CF4F8                 .data.l h'4800480, h'4800430, h'3C00380, h'3400310, h'2F002D0
ROM:000CF4F8                 .data.l h'2B002A0, h'2800270, h'2600250
ROM:000CF4F8                 .datab.l 2, h'3000300
ROM:000CF4F8                 .data.l h'30002F0, h'2D002A0, h'2800270, h'2600250, h'2300220
ROM:000CF4F8                 .data.l h'2100200

After sampling a few values from the map data, it's nearly identical to the other tables posted.

Defining these tables is pretty easy, there are two references to SSM_Battery_Volts in the low ROM, the first is the A/D Conversion, the second should be this table pull.

This table pull uses a slightly different PULL 2d routine, which incorporates a FMAC instruction to apply a gradient/offset based on incoming registers.

This all makes alot of sense because the timing is controlled by the ATU. Seeing how dwell is such a small time value, the only reasonable way to incorporate it is directly into the timer logic, hence the location in the low ROM.

dschultz · **Posted:** Fri Oct 28, 2011 3:02 am

There are quite a few different 2D and 3D pull routines. It all depends on how the table is to be interpreted and whether it is signed or unsigned.

Just for reference has anyone reviewed these I/O samples from Renesas related to engine control?
http://documentation.renesas.com/eng/pr ... sh7055.pdf

Merp · **Joined:** Thu Jul 23, 2009 5:46 pm **Posts:** 863

Thanks, that looks like a pretty informative document. I found a couple others similar docs just searching the web on ATU stuff. Will have to explore the renesas site and see what they have on the 7058.

Bamofo · **Joined:** Mon Jul 02, 2007 11:46 am **Posts:** 430

Been poking around on my 4.5 hour train ride home. have the tables for 07 STI and 04STI 09WRX AND A FEW OTHERS. hope this is helpful and just pm me if it needs to be taken down....

04 STI A2ZJ710J

<table name="Ignition Dwell" address="6211c" level="3">
<table name="Engine Speed" address="620c8"/>
<table name="Battery" address="62108"/>
</table>

07 STI A2UJ000J

<table name="Ignition Dwell" address="d1d90" level="2">
<table name="Engine Speed" address="d1d3c"/>
<table name="Battery" address="d1d7c"/>
</table>

09 WRX AZ1G401V

<table name="Ignition Dwell" address="d556c">
<table name="Engine Speed" address="d5518"/>
<table name="Battery" address="d5558"/>
</table>

05 STI A2ZJB10J

<table name="Ignition Dwell" address="cc510">
<table name="Engine Speed" address="cc4bc"/>
<table name="Battery" address="cc4fc"/>
</table>

06 STI A2ZJE11J

<table name="Ignition Dwell" address="cc664" level="3">
<table name="Engine Speed" address="cc610"/>
<table name="Battery" address="cc650"/>
</table>

Merp · **Joined:** Thu Jul 23, 2009 5:46 pm **Posts:** 863

All posted definitions pushed to git Alpha repo here: https://github.com/Merp/SubaruDefs/tree/Alpha

Currently defined in the Alpha repo:
A2UJ000J
A2ZJ710J
AZ1G401V
A2ZJB10J
A2ZJE11J
A8DH200X
AZ1J500G
AZ1G201G

Easty · **Posted:** Thu Apr 18, 2013 10:45 am

AZ1G400W

DATA - D418C
X AXIS - D413B
Y AXIS - D4178

crippsdr · **Posted:** Sat Dec 28, 2013 10:55 am

I just did a coil on plug conversion, I believe my ecu would benefit messing around with these values, but I'm running wasted spark. What should I do in this situation?
Any help would be great.

td-d · **Posted:** Sat Dec 28, 2013 12:07 pm

crippsdr wrote:

I just did a coil on plug conversion, I believe my ecu would benefit messing around with these values, but I'm running wasted spark. What should I do in this situation?
Any help would be great.

Here's the table:

Code:

ROM:00082068 Table_Ignition_Dwell:.data.w h'D        ; DATA XREF: sub_A07C+598o
ROM:00082068                                         ; ROM:off_A648o
ROM:0008206A                 .data.w 5
ROM:0008206C                 .data.l flt_CD850
ROM:00082070                 .data.l flt_CD884
ROM:00082074                 .data.l word_CD898      ; = 3.008e3
ROM:00082078                 .data.l 0

crippsdr · **Posted:** Sun Dec 29, 2013 10:17 am

td-d wrote:

crippsdr wrote:

I just did a coil on plug conversion, I believe my ecu would benefit messing around with these values, but I'm running wasted spark. What should I do in this situation?
Any help would be great.

Here's the table:

Code:

ROM:00082068 Table_Ignition_Dwell:.data.w h'D        ; DATA XREF: sub_A07C+598o
ROM:00082068                                         ; ROM:off_A648o
ROM:0008206A                 .data.w 5
ROM:0008206C                 .data.l flt_CD850
ROM:00082070                 .data.l flt_CD884
ROM:00082074                 .data.l word_CD898      ; = 3.008e3
ROM:00082078                 .data.l 0

Cheers mate.

Does anyone know if i should be copying the table from a wrx with the saem coils or will it be an issue since im running wasted spark rather than direct spark.

bruno82 · **Joined:** Wed Oct 19, 2016 8:27 pm **Posts:** 8

Subeboost wrote:

I think that I found out that the newer FK0334 coil pack dwell time is the same as the older FK0186 coil. This is what I came up with..

I've been looking for dwell tables for a long time
only the wrx 01 ---- 02 have low dwell ..... I bring back tables to demonstrate ... from wrx 03 and sti 02 all the roms present the same table of dwell even with coils different from fk0186 onwards ... if it's interesting, I've found on the 16bit the fuel cut-off time table if it can affect addresses for all the Roma only 16bit per hour

Merp · **Joined:** Thu Jul 23, 2009 5:46 pm **Posts:** 863

Has anyone ever checked the accuracy of these values with a scope (on 32-bit)? Or checked to see if they actually change dwell?

Bamofo · **Joined:** Mon Jul 02, 2007 11:46 am **Posts:** 430

Merp wrote:

Has anyone ever checked the accuracy of these values with a scope (on 32-bit)? Or checked to see if they actually change dwell?

turbomike has. Worked on another project where they were blowing out. Had to play with the settings. No scope though.

RomRaider

Ignition Dwell - New Definitions

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