Mazda RX-8 Workshop Manual page 3038

Diagnostic procedure
CAUTION:
When disconnecting the connector, verify that there is no looseness, damage, deformation, corrosion, or poor
connection of the connector terminals.
Step
1 VERIFICATION BEFORE SERVICING
Are any DTCs, except the
following, displayed?
Inspection
U2516
16:Er12
Device code:16
error code:12
26:Er81
Device code:26
error code:81
YesDetermine the open circuit location referring to
CIRCUIT LOCATION (MS-CAN) [MULTIPLEX COMMUNICATION
SYSTEM].
No Go to the next step.
Action
DETERMINING OPEN