Mazda RX-8 Manual page 1255

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DTC P0768
DTC P0768
Shift solenoid C circuit malfunction (open circuit/short to ground or power supply)
DETECTION
CONDITION
POSSIBLE
CAUSE
Open or short circuit in shift solenoid C signal system (when the TCM monitors
solenoid output voltage, voltage that differs from the ON/OFF signal output by
CPU in TCM is detected).
Diagnostic support note:
This is continuous monitor (CCM).
MIL illuminates if TCM detects the above malfunction condition during the first
drive cycle.
PENDING CODE is not available.
FREEZE FRAME DATA is available.
AT warning light illuminates.
DTC is stored in TCM memory.
Shift solenoid valve C malfunction
Open circuit in wiring harness between shift solenoid valve C terminal A and
TCM terminal 2V
Short to ground in wiring harness between shift solenoid valve C terminal A and
TCM terminal 2V
Short to power supply in wiring harness between shift solenoid valve C terminal
A and TCM terminal 2V
Damaged connector between shift solenoid valve C and TCM
TCM malfunction
(w)
RX-8 Transmission (Manual & Auto)
Page 230

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