Mazda RX-8 Workshop Manual page 3079

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2011 - RX-8 - Body and Accessories
DTC U0073, U1900, U2516 [MULTIPLEX COMMUNICATION SYSTEM]
U0073 CAN system communication error
DTC U1900 CAN system communication error
U2516 CAN system wiring harness open or short circuit
WARNING:
DETECTION
CONDITION
POSSIBLE CAUSE
Perform the following on-board diagnosis according to
SYSTEM] troubleshooting procedure.
CAN system related harness malfunction
CAN system-related module malfunction
Malfunction of connectors between PCM, TCM, ABS HU/CM, DSC HU/CM, EPS control module, keyless
control module and instrument cluster
Open or short circuit in wiring harness
PCM malfunction
Instrument cluster malfunction
EPS control module malfunction
ABS HU/CM malfunction
DSC HU/CM malfunction
TCM malfunction
Keyless control module malfunction
Steering angle sensor malfunction
FOREWORD [MULTIPLEX COMMUNICATION