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Yaw sensor code -> No ABS
Ok hive mind, I've searched and I'm not finding any help on this (maybe my Google-fu is week).
2013 FR-S, motor swapped (still subie - we don't think this is the issue but are open to ideas), caged racecar, stock ABS module and calipers, etc.
ABS stops working in a session and when it happens, the only consistent-every-time code is the Yaw Rate Sensor.
Sometimes we can come to the pits and reset everything at the battery and the ABS comes back, then she'll run for a full session with no issues. Driver change and the next session out, 3 laps in bang the ABS goes out and stays out for the entire session. ECU/engine reset/refire never fixes it.
Saturday night I drove 6.5 hours round trip to borrow the right ABS module (block and CPU). We swapped the black box/CPU (not the block). That seemed to have no positive effect - same issues, same code.
Question 1: is the Yaw Rate sensor in that ABS black box, or is it elsewhere?
Question 2: any ideas as to what we might be fighting?
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