Sr20det CAS Problem

[Memphisrain]

Greetings from Germany,


We bought ah MS3 with MS3x V3.57. We Use the MS3 and Ms3X Harness from Diy.
Everything is fine, but the Stock CAS don't work.

On a V3.57, put main board JP1 in the 1-2 position and J1 in the 5-6 position.

Low Res on Pin 24 MS3
High Res on Pin 31 MS3X
12V Permanent
CAS ground on Sensor Ground MS3


Under the ignition setup menu, set the following.

Spark mode: Nissan SR20
Trigger Angle / Offset: 0
Ignition input capture: Rising edge
Spark output: Going High
Number of coils: Coil on plug
Spark hardware in use: MS3X spark
Cam input: MS3X

And Now... we get no Signal :/


Had i Something forget?

[JamesBroChill42]

Do you have any kind of tooth log? crank it over a couple times and see if you can get a composite and/or a tooth log.
When I had this problem with my Nissan KA engine, It ended up being a combination of old battery, improperly adjusted VR pots, and a misplaced pull up resistor. I would investigate those three routes.

[JoseMiguel]

I "think" you have the trigger wires upside down, if my logic serves me right:

High res should go to pin 24 ms3, since it is the "main" trigger

Low res should go to pin 31 ms3x, since it is the "cam" trigger.

Sent from my Nexus 6 using Tapatalk

[billr]

Yeah, I would have said that too, but I think there was a recent thread discussing this type of trigger wheel; and doing that won't work because there is no missing tooth on the high-res and no usable pattern (like half-moon or single-tooth) on the low-res to provide TDC info

Edit: take a peek at this thread, I think it is a similar type trigger being discussed

http://www.msextra.com/forums/viewtopic ... 31&t=62572

[jsmcortina]

I "think" you have the trigger wires upside down, if my logic serves me right

PLEASE read the manual. The Nissan CAS is special. The wiring is covered in the Hardware manual.

James

[Memphisrain]

Hi,
We have now made ​​a test with an MS3 V3.0 . This is currently installed in my Nissan Skyline and constantly on Rb25Det .
We have switched it on SR20 in TS . the CAS was immediately recognized and we had a speed signal .
Either something is broken board at our V3.57 , or we did something else wrong .

When cabling we adhered to the instructions . As I said with another MS3 we immediately have a speed signal .

In V3.57 we have: mainboard JP1 in the 1-2 position and J1 in the position 5-6 . Not more. Have we forgotten something there ?

Sry for the Bad English, googel Translater German-Englisch.

[jsmcortina]

Looks like J1 is in the wrong place.
Have you adjusted the trim pots to give 2.5V ?
See:
http://www.msextra.com/doc/pdf/html/MS3 ... .4-74.html

James

[schnabulator]

Where is the official source that states the jumper settings for JP1 & J1?

[jsmcortina]

Where is the official source that states the jumper settings for JP1 & J1?

The Hardware Manual linked in the previous post.

James

[schnabulator]

Where is the official source that states the jumper settings for JP1 & J1?

The Hardware Manual linked in the previous post.

James

Hi James,

I am sorry but i can't find any information about the jumper settings in the link which you sent.
You link is about :4.10.2.8 Sequential - low impedance injectors - Injector Resistors
Either i am blind or you may posted the wrong link.

Can you please double check?

Flo

[jsmcortina]

Look in the index, you'll find Nissan SR20 in section 6.40

James