Mazda RX-8 Workshop Manual page 2378

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2011 - RX-8 - Steering
DTC B2278
DTC B2278
DETECTION
CONDITION
POSSIBLE CAUSE
Torque sensor
Abnormal input signal detected from torque sensor.
Poor connection of EPS control module connector
EPS control module connector or terminal malfunction
Open or short circuit in wiring harness between EPS control module terminals and
torque sensor terminals:
EPS control module terminal 3A—torque sensor terminal A
EPS control module terminal 3B—torque sensor terminal B
EPS control module terminal 3C—torque sensor terminal C
Torque sensor malfunction
EPS control module malfunction