DTC P0320: Ignition/Distributor Engine Speed Input Circuit: Notes

DTC P0320 CHART (MZI-3.7)

DTC P0320	Ignition/distributor engine speed input circuit
DETECTION CONDITION	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.
POSSIBLE CAUSE	Loose wires/connectors. CKP sensor and/or trigger wheel physically damaged. CKP sensor malfunction. Arcing secondary ignition components (coil, wires or plugs). On-board transmitter (2-way radio). CKP sensor circuits short to each other. Open circuit between PCM terminal 2V and CKP sensor terminal A Open circuit between PCM terminal 2R and CKP sensor terminal B Short to ground between PCM terminal 2V and CKP sensor terminal A Short to ground between PCM terminal 2R and CKP sensor terminal B Short to power supply between PCM terminal 2V and CKP sensor terminal A Short to power supply between PCM terminal 2R and CKP sensor terminal B PCM malfunction
Courtesy of MAZDA MOTORS CORP.