'165 to '730

[John S. Gwynne]

|     1) How does the buffered VSS signal from the '165 get converted to
| the "Hi" and
|         "Lo" VSS inputs of the '730.  (I'm assuming that the 2000ppm and
| 4000ppm
|         output of the '730 are not needed for my older speedo and cruise
| systems)

leave BB9 & BB10  open. Connect your old A10 to BC6, and change prom
0x0018 from 0xd4->0x94... see table below


|     3) I couldn't find a EGR Diag input on the '730.  Do those cars not
| check the
|         EGR temp for proper opperation?
| 

They check it through variation in MAP. That wire is not connected to the 730
see below.


|     4) I'm assuming that I can jumper the knock sensor directly into the
| '730, by
|         shorting out the disconnected ESC  connector.  Is this correct
| that the same
|         knock sensor used in the '165/ESC system can be feed directly
| into the '730
|         input?
| 

No, they are different types.... need a new one.



| Anything else to consider?


disconnect the cold start injector (remove fuse)

These two PROM changes where needed in my case:
  0x0018 0xd4->0x94; MAG SPD SENSOR change
  0x0016 0x14->0x04; no VATS


Below is the pin-for-pin swap that I used....

HTH,
john gwynne


    730            165
circuit pin    circuit  pin     Comments
============================================================================

450     BD7     450     D1     ;split d1 to both inj drivers
450     BD6     450     D1     ;

468     BC12    468     D16             
467     BC11    467     D15             
731     BD12    731     D11             
412     GE14    412     D7              
413     GE15    413     D6              
424     BC7     424     D5              
423     BC8     423     D4              
450     BD1     450     D3
452     BB5     452     D2              
340     BC16    340     C16             
416     BA5     416     C14             
417     GF13    417     C13             
472     GF16    472     C12             
410     GE16    410     C10             
446     BD14    446     C8              
442     GE4     442     C6              
441     GE3     441     C5              
443     GE5     443     C4              
444     GE6     444     C3              
429     GF4     429     C2              
335     GE8     335     C1    (n.c.., no fan)
434     BD16    434     B10             
59      BC9     59      B8              
496     GF9     485     REF B7          
229     GF10    963     B6              
430     BD8     430     B5              
453     BD9     453     B3              
120     GE13    120     B2              
340     BB1     340     B1              
450     BA12    450     A12             
NC      BC6     437     A10 
451     GE12    451     A9              
461     BA8     461     A8              
456     GF1     422     A7              
439     BA6     439     A6              
419     GE7     419     A5              
435     GE9     435     A4              
428     GF7     428     A3              
436     GF2     436     A2              
465     BA11    465     A1              

wires to add:
474     BA4     NC      NC     ;+5v ref map     
432     GF15    NC      NC     ;map signal
470     BB6     NC      NC     ;+5v map return

open connections:
401     BB9     NC      NC     ;vss (low)       
400     BB10    NC      NC     ;vss (hi)
1019    BB11    NC      NC     ;vss output (4k p/mi)
381     BC1     NC      NC     ;vss output (2k p/mi)
NC      NC      452     A11    ;MAF signal gnd
NC      NC      998     B12    ;MAF signal
NC      NC      935     C15    ;egr thermo switch
NC      NC      450     D10    ;unused ground
NC      NC      900     D12    ;burn-off relay


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