Mazda RX-8 Manual page 812

DTC P0564
DTC P0564 Cruise control switch input circuit problem
DETECTION
CONDITION
POSSIBLE
CAUSE
The PCM monitors the input voltage from the cruise control switch when the
•
engine is running. If the input voltage is less than 3.0 V for more than 2 min , the
PCM determines that there is a cruise control switch input circuit problem.
Diagnostic support note
This is a continuous monitor (Other).
•
The MIL does not illuminate.
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PENDING CODE is available if the PCM detects the above malfunction condition.
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FREEZE FRAME DATA is available.
•
The DTC is stored in the PCM memory.
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Cruise control switch malfunction
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Connector or terminal malfunction
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Short to GND in wiring harness between cruise control switch terminal B and PCM
•
terminal 5V
PCM malfunction
•
(w) Engine Diagnostics & Control
Page 249