Quote:
Originally Posted by jamesm
got my flex fuel setup installed... out doing some WOT runs getting it all dialed in. it's all going very well until ~20psi, when i run into two problems:
- i can't get the damn car to hook up through a whole 3rd gear run from 2.5k to redline. everytime it spools it just spins. fun, but kinda makes tuning a bit difficult. even 4th gear kinda skitches around through the peak torque area spinning quite a bit. time for something better than cheap kumhos, i guess.
i pulled over and checked for codes and found code 'C1234' in the ABS module. ecutek docs don't even reference this, and a google search is pretty inconclusive. has anyone experienced this, or does anyone know what this code references on our cars? i cleared it and it didn't come back, but i haven't done another run since....
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Ok looked in BRZ repair manual Definitely
DTC C1234 Yaw rate sensor error
If there is a malfunction in the yaw rate sensor which is integrated into the skid control computer (brake actuator ASSY), the skid control computer (brake actuator ASSY) outputs a diagnostic code and prohibits the Vehicle stability control operation for fail safe.
Diagnostic codes
DTC detecting conditions
Faulty part
C1234
Skid control computer (brake actuator ASSY) internal error (yaw rate sensor)
Skid control computer (brake actuator ASSY)
C1419
Skid control computer (brake actuator ASSY) internal error (G sensor)
C1472
Skid control computer (brake actuator ASSY) internal error (lateral G sensor)
C1474
Skid control computer (brake actuator ASSY) internal error (longitudinal G sensor)
Recommends checking wheel speed sensors for damage or foreign material
Check speed sensor with techstream (think you have that) should be equal
1. VDC sensor midpoint setting mode
CAUTION: ·When the skid control computer (brake actuator ASSY) has been replaced, make sure to perform VDC sensor midpoint setting.
·Make sure to perform [VDC sensor midpoint setting mode] on a level surface (grade of 1 % or less). While centering, do not shake the vehicle or open/close a door.
NOTE: When performing [VDC sensor midpoint setting mode], make sure to set zero point of yaw rate sensor & G sensor (brake actuator ASSY is integrated) and steering sensor.
(1) Turn the ignition switch to OFF.
(2) Shift into neutral and apply the parking brake.
(3) Connect the SSM3 to the DLC3.
(4) Turn the ignition switch to ON.
(5) Set the steering wheel in a straight position.
(6) On the SSM3 screen, select [ABS/VDC System]→[Work Support]→[VDC sensor midpoint setting mode].
(7) Following the SSM3 screen, perform [VDC sensor midpoint setting mode].
2. Changing modes
·When it is necessary to temporarily stop the control while operating the vehicle on a device such as free rollers, enter into the check mode. While in the check mode, DTCs listed in the list may be stored.
·If any DTCs are stored, clear the DTCs using SSM3. After turning IG OFF→ON, the conditions are normal if speed sensor related DTCs are not stored.
Code list
Code no.
[SAE]
Content of diagnosis
C1271
FR wheel speed sensor signal, lost
C1272
FL wheel speed sensor signal, lost
C1273
RR wheel speed sensor signal, lost
C1274
RL wheel speed sensor signal, lost
C1275
FR wheel speed sensor signal error
C1276
FL wheel speed sensor signal error
C1277
RR wheel speed sensor signal error
C1278
RL wheel speed sensor signal error
I reckon its just confused as vehicle accelerated outside its normal operating range. Your not running a staggered tyre setup with different diameter tyres ??
If you want mre let me know , will try and find download link for manual again