Ok..I changed out my open AT5 rear end for a 6MT LSD . Every thing seems fine but Ive gotten a CEL a couple of times....1574 code . Any one get this code , or know what it could be ?

 

DTC P1574 ASCD VEHICLE SPEED SENSOR

The ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from unified meter and A/C amp., and the other is from TCM (Transmission control module). The ECM uses these signals for ASCD control. Refer to EC-647, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)" for ASCD functions.

DTC Detecting Condition: ECM detects a difference between two vehicle
speed signals is out of the specified range.

Possible Cause:

Harnessor connectors (The CAN communication line is open or shorted)

Unified Meter and AC Amp

ABS actuator and electric unit (control unit)(models without VDC)

VDC/TCS/ABS control unit (models with VDC)

Wheel sensor

TCM

ECM

 

Did you do the swap yourself?

 

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I did the swap as well. You have to make sure both speed sensors are seated properly in their spots and tightened down properly. They have to be within a certain distance of the axle to recieve accurate data. Also make sure both sensor clips are properly seated and locked together.

 

Thanks...But it is way over my old head . So it just may be the speed signals from the Tranny and the rear end that are different and that is causing it ?

And No...I didnt do the install the shop I use did it

 

I'll look up the locations in the manual and check them ...THANKS

 

I had no problem with my swap. Im wondering if one of the sensors is loose.

 

Booger, what are your impressions of puting the 6MT pumpkin in a 5AT F/I car? I have a friend who has a 6MT HSK SC Z who wants to swap with me but I have not read a lot about puting the 6MT gearing in a 5AT F/I Z. Any opinions would be greatly appreciated.

 

westpak, where did you get the write up?

 

It is from the manual.

 

A little faster excel . Havent really flogged the car at all to really find out . On the dyno Im at 90mph at 6900rpm and I used to be at 105mph in 3rd gear

 

disconnect the battery did you? befor installing that is...

 

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That I wouldnt know....if the shop did or not..why ?