Mazda RX8 - Page 428

PCM
1. Check the display of DTC U0121 and/or U0155, using the SST (WDS or equivalent). (See DTC
TABLE [MULTIPLEX COMMUNICATION SYSTEM] .)
2. Referring to the following table, determine the malfunctioning part of the CAN system.
Communication status
Module
ABS HU/CM
DSC HU/CM
TCM Keyless control module Instrument cluster
Malfunction location
Error Error Error Error
• Wiring harness 1
• Wiring harness 3
• PCM
Error OK OK OK
• Wiring harness 5
• ABS HU/CM
• DSC HU/CM
OK Error OK OK
• Wiring harness 4
• TCM
OK OK Error OK
• Wiring harness 7
• Keyless control module
PCM
OK OK OK Error
• Wiring harness 8
• Wiring harness 10
• Wiring harness 12
• Instrument cluster
(w) RX-8 Body
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