Mazda RX-8 Manual page 601

DTC P0077
DTC P0077 VDI solenoid valve control circuit high
DETECTION
CONDITION
POSSIBLE
CAUSE
The PCM monitors the VDI solenoid valve control voltage when the PCM turns
•
the VDI solenoid valve on. If the control voltage is high, the PCM determines that
the VDI solenoid valve control circuit voltage is high.
Diagnostic support note
This is a continuous monitor (CCM).
•
The MIL does not illuminate.
•
PENDING CODE is available if the PCM detects the above malfunction condition
•
during the first drive cycle.
FREEZE FRAME DATA is available.
•
The DTC is stored in the PCM memory.
•
VDI solenoid valve malfunction
•
Connector or terminal malfunction
•
Short to power supply in wiring harness between VDI solenoid valve terminal B
•
and PCM terminal 1W
PCM malfunction
•
(w) Engine Diagnostics & Control
Page 38