Mazda CX-9 Grand Touring 2009 Manual page 1027

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
DTC P0320
DETECTION
CONDITION
POSSIBLE CAUSE
DIAGNOSTIC PROCEDURE
DTC P0320 (MZI-3.7) DIAGNOSTIC PROCEDURE
STEP
VERIFY FREEZE FRAME DATA HAS
2008 Mazda CX-9 Grand Touring
Ignition/distributor engine speed input circuit
The ignition engine speed sensor input signal to the PCM is continuously
monitored.
The test fails when the signal indicates that 2 successive erratic PIP pulses
occurred.
Loose wires/connectors.
Arcing secondary ignition components (coil, wires or plugs).
On-board transmitter (2-way radio).
INSPECTION ACTION
Yes Go to the next step.