Changed AT5 pumpkin for a 6MT pumkin..got CEL
06-20-2005, 03:27 PM
#2
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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
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
06-20-2005, 03:57 PM
#5
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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.
06-20-2005, 03:57 PM
#6
Originally Posted by westpak
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
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
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
06-20-2005, 03:58 PM
#7
Originally Posted by g356gear
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.
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06-20-2005, 04:52 PM
#9
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.
06-20-2005, 05:21 PM
#12
Originally Posted by zachcrosen
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.
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