Mazda RX-8 Manual page 2148

Malfunction location
Wiring harness 1
•
Wiring harness 3
•
Wiring harness 6
•
Wiring harness 7
•
PCM
•
Keyless control module
•
Steering Angle Sensor
1. Check the display of DTC U1900, using the SST (WDS or equivalent). (See DTC TABLE
[MULTIPLEX COMMUNICATION SYSTEM] .)
Malfunction location
Wiring harness 11
•
DSC HU/CM
•
Steering angle sensor
•
Instrument Cluster
1. Access and monitor the "PCM_MSG", "EPS_MSG", "TPM_MSG", "TCM_MSG" and "ABS_MSG" of
PID using the SST (WDS or equivalent).
2. Referring to the PID/DATA MONITOR, confirm the display status of the PID. (See PID/DATA
MONITOR TABLE [MULTIPLEX COMMUNICATION SYSTEM] .)
3. Referring to the following table, determine the malfunctioning part of the CAN system.
Communication status
Module
TCM
Instrument
Error Error
cluster
Error OK
ABS
HU/CM
EPS control
module
DSC
HU/CM
Error
OK
TPMS control
PCM
module
Error Error
OK OK
Malfunction location
Wiring harness 8
•
Wiring harness 10
•
Wiring harness 12
•
Instrument cluster
•
Wiring harness 4
•
TCM
•
(w) RX-8 Body
Page 430