Mazda RX-8 Workshop Manual page 3266

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2011 - RX-8 - Body and Accessories
NO. 4 MIL ILLUMINATES [INSTRUMENT CLUSTER]
4 MIL illuminates
POSSIBLE CAUSE
Diagnostic procedure
STEP
1 Start the engine.
Does the MIL turn off?
2 Are there a number of warning lights illuminated?
3 Start the instrument cluster input/output check
mode.
Does the MIL turn off with a check code other than
26?
PCM malfunction
Short circuit in wiring harness between CAN-L, CAN-H and GND
Instrument cluster malfunction
DTC is stored in PCM.
Connector or pin malfunction
Open circuit in CAN wiring harness (CAN-L, CAN-H)
CAN wiring harness (CAN-L, CAN-H) short each other
INSPECTION ACTION
YesTroubleshooting completed.
No Go to the next step.
YesGo to Step 6.
No Go to the next step.
YesInspect the PCM.
No Replace the instrument
cluster.