DTC P0320:00 [MZI-3.7]: Notes
WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION & POSSIBLE CAUSE
| DTC P0320:00 |
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.
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| POSSIBLE CAUSE |
- Loose wires/connectors
- CKP sensor and/or trigger wheel physically damaged
- CKP sensor malfunction
- Arching 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 circuit between PCM terminal 2V and CKP sensor terminal A
- Short to ground circuit between PCM terminal 2R and CKP sensor terminal B
- Short to power supply circuit between PCM terminal 2V and CKP sensor terminal A
- Short to power supply circuit between PCM terminal 2R and CKP sensor terminal B
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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