Mazda RX8 - Page 430

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
ABS
HU/CM
DSC
HU/CM
EPS control
module
TPMS control
module
PCM
Malfunction location
Error Error Error Error Error
• Wiring harness 8
• Wiring harness 10
• Wiring harness 12
• Instrument cluster
Instrument
cluster
Error OK OK OK OK
• Wiring harness 4
• TCM
(w) RX-8 Body
Page 430