Mazda RX-8 Workshop Manual page 116

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2011 - RX-8 - Engine
DTC P1682 [13B-MSP]
DTC P1682 Metering oil pump No.1 circuit low input
DETECTION
CONDITION
POSSIBLE
CAUSE
The PCM monitors the input voltage from the metering oil pump No.1 when the battery
voltage is more than 8 V and the metering oil pump No.1 control signal turned from ON
to OFF. If the input voltage is less than the specification, the PCM determines that the
metering oil pump No.1 circuit has a malfunction.
Diagnostic support note
This is a continuous monitor (other).
The MIL does not illuminate.
FREEZE FRAME DATA (Mode 2/Mode 12) is not available.
The DTC is stored in the PCM memory.
Metering oil pump No.1 connector or terminals malfunction
Metering oil pump driver connector or terminals malfunction
Short to ground or open circuit in metering oil pump No.1 power supply circuit
Short to ground in wiring harness between main relay terminal C and
metering oil pump No.1 terminal B
Metering oil pump No.1 related fuse malfunction
Open circuit in wiring harness between main relay terminal C and metering
oil pump No.1 terminal B
Short to ground or open circuit in metering oil pump driver power supply circuit
Short to ground in wiring harness between main relay terminal C and
metering oil pump driver terminal C
Metering oil pump driver related fuse malfunction
Open circuit in wiring harness between main relay terminal C and metering
oil pump driver terminal C
PCM connector or terminals malfunction
Short to power supply in wiring harness between metering oil pump driver terminal B and
PCM terminal 1S
Short to ground in wiring harness between metering oil pump No.1 terminal A and PCM
terminal 1E