Alternator control no BCM

[ricasas]

Thank you Tre-Cool. Can this be used with V8 as well. Once I make the .cax file, how do I access the alternator control in EFI Live?

[Tre-Cool]

create it as a v7.5 cax, then use the in-built conversion tool to make it a v8 compliant file. I've still lazy and write them for 7.5, then convert later when needed.

I haven't fully migrated to v8 for all my stuff yet.

[joecar]

Same here.

[ricasas]

Save this to a text file and save with a .cax extension & place it in the C:\Program Files (x86)\EFILive\V7.5\Calibrations folder if using v7.5 with your os number for file name.

[G1000]
; Description
DESC.001 = Alternator Voltage Control: Indicates the vehicle is fitted with a regulated voltage control alternator and serial message duty cycle control from BCM is available, if disabled DC will be 100% when alternator is enabled.
;
;
; Seg Caption Major Minor Vis Dis 2D Grp
; --- -------------------------------- ---------------- ---------------- --- --- -- ---
VIEW = 7 "Voltage Control" "Alternator" "" 1 1 0 0
;
; Address(es) BitOff Bits Typ Inv
; -------------------------------- ------ ---- --- ---
ADDR = 1C0F04 0 8 SED 0
;
; Units Factor Offset Prec MinLimit MaxLimit MinUser MaxUser
; -------- -------------- ------ ---- -------- -------- -------- --------
SI_SLOT = Units 1.0 0 0 0 256 0 256
;
; Body Col Row
; -------------- -------------- --------------
ULABELS = . . .
;
; Enumerations
; -------------------------------------------------------------------
SI_ENUM = "0=Not-Fitted,1=Fitted"
SI_ENUM = "0=Not-Fitted,1=Fitted"
;
; Units Labels
; ---------------- -----------------------------------------------------
SI_COL = .
IM_COL = .
SI_ROW = .
IM_COL = .
; ================================================== =============================
[G1001]
; Description
DESC.001 = Should only be enabled if Voltage Control is enabled. Indicates that the ECM can override the serial message alternator duty cycle to boost system voltage when required.
;
; Seg Caption Major Minor Vis Dis 2D Grp
; --- -------------------------------- ---------------- ---------------- --- --- -- ---
VIEW = 7 "ECM Override" "Alternator" "" 1 1 0 0
;
; Address(es) BitOff Bits Typ Inv
; -------------------------------- ------ ---- --- ---
ADDR = 1E4720 0 8 SED 0
;
; Units Factor Offset Prec MinLimit MaxLimit MinUser MaxUser
; -------- -------------- ------ ---- -------- -------- -------- --------
SI_SLOT = Units 1.0 0 0 0 256 0 256
;
; Body Col Row
; -------------- -------------- --------------
ULABELS = . . .
;
; Enumerations
; -------------------------------------------------------------------
SI_ENUM = "0=Disabled,1=Enabled"
IM_ENUM = "0=Disabled,1=Enabled"
;
; Units Labels
; ---------------- -----------------------------------------------------
SI_COL = .
IM_COL = .
SI_ROW = .
IM_COL = .
; ================================================== =============================

Tre-Cool, Is there a specific line in the text that I can change if I want the duty cycle to be lest than 100%?

[Tre-Cool]

there might be a variable for it, there's a whole heap linked to that function block in the ecm. but understanding the conversion factor to work it out is a different matter. simple on/off switches are easy to follow.

[ricasas]

Tre-Cool, I tried the patch and I'm not sure what I could be doing wrong. I can only control the alternator with the DVT tab in the v7.5 scan tool. If I interpreted the voltage control description correctly, when I change the alternator voltage control from fitted to not fitted, it should make the alternator go to 100% duty cycle or full voltage in this case, but it does not. I even lose alternator control in the DVT tab. Hopefully I missing something here. I've tried quick flash and full flash of the ECM. Hope you can help.

[Tre-Cool]

give these ones a shot. imo maybe changing the min duty cycle might bump it up along with the failure time. (the descriptions im stealing from HPT).

[G1002]
; Description
DESC.001 = Serial communications must be lost or duty cycle below minimum for this amount of time, before alternator duty cycle will be defaulted to 100%.
;
; Seg Caption Major Minor Vis Dis 2D Grp
; --- -------------------------------- ---------------- ---------------- --- --- -- ---
VIEW = 7 "Default Time" "Alternator" "" 1 1 0 0
;
; Address(es) BitOff Bits Typ Inv
; -------------------------------- ------ ---- --- ---
ADDR = 1c0efe 0 16 UNM 0
;
; Units Factor Offset Prec MinLimit MaxLimit MinUser MaxUser
; -------- -------------- ------ ---- -------- -------- -------- --------
SI_SLOT = Seconds 0.00625 0 0 0 256 0 256
;
; Body Col Row
; -------------- -------------- --------------
ULABELS = . . .
;
; Enumerations
; -------------------------------------------------------------------
;
; Units Labels
; ---------------- -----------------------------------------------------
SI_COL = .
IM_COL = .
SI_ROW = .
IM_COL = .
; ================================================== =============================
[G1003]
; Description
DESC.001 = Maximum Duty Cycle requested by override voltage.
;
; Seg Caption Major Minor Vis Dis 2D Grp
; --- -------------------------------- ---------------- ---------------- --- --- -- ---
VIEW = 7 "Override DC Max" "Alternator" "" 1 1 0 0
;
; Address(es) BitOff Bits Typ Inv
; -------------------------------- ------ ---- --- ---
ADDR = 1E46F8 0 16 UNM 0
;
; Units Factor Offset Prec MinLimit MaxLimit MinUser MaxUser
; -------- -------------- ------ ---- -------- -------- -------- --------
SI_SLOT = Percentage 0.003052 0 0 0 200 0 200
;
; Body Col Row
; -------------- -------------- --------------
ULABELS = . . .
;
; Enumerations
; -------------------------------------------------------------------
;
; Units Labels
; ---------------- -----------------------------------------------------
SI_COL = .
IM_COL = .
SI_ROW = .
IM_COL = .
; ================================================== =============================
[G1004]
; Description
DESC.001 = Minimum Duty Cycle used as limit for default action.
;
; Seg Caption Major Minor Vis Dis 2D Grp
; --- -------------------------------- ---------------- ---------------- --- --- -- ---
VIEW = 7 "DC Min" "Alternator" "" 1 1 0 0
;
; Address(es) BitOff Bits Typ Inv
; -------------------------------- ------ ---- --- ---
ADDR = 1c0f00 0 16 UNM 0
;
; Units Factor Offset Prec MinLimit MaxLimit MinUser MaxUser
; -------- -------------- ------ ---- -------- -------- -------- --------
SI_SLOT = Percentage 0.003052 0 0 0 200 0 200
;
; Body Col Row
; -------------- -------------- --------------
ULABELS = . . .
;
; Enumerations
; -------------------------------------------------------------------
;
; Units Labels
; ---------------- -----------------------------------------------------
SI_COL = .
IM_COL = .
SI_ROW = .
IM_COL = .
; ================================================== =============================

[ricasas]

give these ones a shot. imo maybe changing the min duty cycle might bump it up along with the failure time. (the descriptions im stealing from HPT).

[G1002]
; Description
DESC.001 = Serial communications must be lost or duty cycle below minimum for this amount of time, before alternator duty cycle will be defaulted to 100%.
;
; Seg Caption Major Minor Vis Dis 2D Grp
; --- -------------------------------- ---------------- ---------------- --- --- -- ---
VIEW = 7 "Default Time" "Alternator" "" 1 1 0 0
;
; Address(es) BitOff Bits Typ Inv
; -------------------------------- ------ ---- --- ---
ADDR = 1c0efe 0 16 UNM 0
;
; Units Factor Offset Prec MinLimit MaxLimit MinUser MaxUser
; -------- -------------- ------ ---- -------- -------- -------- --------
SI_SLOT = Seconds 0.00625 0 0 0 256 0 256
;
; Body Col Row
; -------------- -------------- --------------
ULABELS = . . .
;
; Enumerations
; -------------------------------------------------------------------
;
; Units Labels
; ---------------- -----------------------------------------------------
SI_COL = .
IM_COL = .
SI_ROW = .
IM_COL = .
; ================================================== =============================
[G1003]
; Description
DESC.001 = Maximum Duty Cycle requested by override voltage.
;
; Seg Caption Major Minor Vis Dis 2D Grp
; --- -------------------------------- ---------------- ---------------- --- --- -- ---
VIEW = 7 "Override DC Max" "Alternator" "" 1 1 0 0
;
; Address(es) BitOff Bits Typ Inv
; -------------------------------- ------ ---- --- ---
ADDR = 1E46F8 0 16 UNM 0
;
; Units Factor Offset Prec MinLimit MaxLimit MinUser MaxUser
; -------- -------------- ------ ---- -------- -------- -------- --------
SI_SLOT = Percentage 0.003052 0 0 0 200 0 200
;
; Body Col Row
; -------------- -------------- --------------
ULABELS = . . .
;
; Enumerations
; -------------------------------------------------------------------
;
; Units Labels
; ---------------- -----------------------------------------------------
SI_COL = .
IM_COL = .
SI_ROW = .
IM_COL = .
; ================================================== =============================
[G1004]
; Description
DESC.001 = Minimum Duty Cycle used as limit for default action.
;
; Seg Caption Major Minor Vis Dis 2D Grp
; --- -------------------------------- ---------------- ---------------- --- --- -- ---
VIEW = 7 "DC Min" "Alternator" "" 1 1 0 0
;
; Address(es) BitOff Bits Typ Inv
; -------------------------------- ------ ---- --- ---
ADDR = 1c0f00 0 16 UNM 0
;
; Units Factor Offset Prec MinLimit MaxLimit MinUser MaxUser
; -------- -------------- ------ ---- -------- -------- -------- --------
SI_SLOT = Percentage 0.003052 0 0 0 200 0 200
;
; Body Col Row
; -------------- -------------- --------------
ULABELS = . . .
;
; Enumerations
; -------------------------------------------------------------------
;
; Units Labels
; ---------------- -----------------------------------------------------
SI_COL = .
IM_COL = .
SI_ROW = .
IM_COL = .
; ================================================== =============================

No luck Tre-Cool. I was wondering, is it possible to make alternator control in the DVT of the scan tool active in the tune tool? I maybe oversimplifying, but is it possible to just copy and paste the code from the V7.5 scan to the v7.5 tune program?