Mazda RX-8 2009 Service Highlights page 296

On-Board Diagnostic Function
Malfunction detection function
! The failure detection function in each CAN system-related module detects malfunctions in input/output signals.
! This function outputs the DTC for the detected malfunction to the DLC-2, and also sends the detected result to
the memory function and fail-safe function.
Fail-safe function
! When the failure detection function determines that there is a malfunction, the fail-safe function illuminates a
warning light to inform the driver of the malfunction.
Memory function
! The memory function stores the DTC for the malfunction of input/output signals for related parts, as determined
by the failure detection function.
Self-malfunction diagnostic function
! The self-malfunction diagnostic function determines that there is a malfunction, and outputs a signal, as a DTC,
to the DLC-2. The DTC can be read out using the Mazda Modular Diagnostic System (M-MDS).
HS-CAN
DTC Output Unit
Instrument cluster
PCM
ABS HU/CM (with ABS)
DSC HU/CM (with DSC)
EPS control module
TCM
Keyless control module
*1 : with keyless entry system only
Revised 6/2008 (Ref. No. R116/08)
2009 Mazda RX-8 Service Highlights (3452–1U–08C)
CONTROL SYSTEM
DTC
U1900
U2023
U2064
U2516
U0073
U0101
U0121
U0155
U0167
U1900
U2516
U0073
U0100
U0101
U0155
U1900
U2023
U0073
U1900
U2023
U0073
U0100
U0121
U0073
U0100
U0323
*1
U1147
U2023
*1
U2510
Malfunction location
CAN system communication error
Abnormal message from other module
Warning light illumination request signal from other
modules
CAN system communication error (HS-CAN)
Module communication error (CAN bus)
Communication error to TCM
ABS HU/CM (with ABS) or DSC HU/CM (with DSC)
communication error
Communication error to instrument cluster
Communication error to keyless control module
CAN system communication error
CAN system wiring harness open or short circuit
Module communication error (CAN bus)
PCM communication error
Communication error to TCM
Communication error to instrument cluster
CAN system communication error
Abnormal message from PCM
Module communication error (CAN bus)
CAN system communication error
Abnormal message from PCM
CAN system communication error
PCM communication error
ABS HU/CM (with ABS) or DSC HU/CM (with DSC)
communication error
Module communication error (CAN bus)
PCM communication error
Communication error to instrument cluster
Communication error to PCM
Abnormal message from PCM
Communication error to PCM
09-40
09-40–11