DTC P0320 - Ignition/Distributor Engine Speed Input Circuit
DTC DESCRIPTION P0320 - IGNITION/DISTRIBUTOR ENGINE SPEED INPUT CIRCUIT
| Description: |
This DTC sets when several erratic profile ignition pickup (PIP) pulses have occurred in the crankshaft position (CKP) sensor signal within a calibrated time period when the camshaft speed exceeds the equivalent speed of engine idle. |
| Possible Causes: |
- CKP+ circuit intermittent open (VR type)
- CKP- circuit intermittent open (VR type)
- CKP circuit intermittent open (Hall effect)
- VREF circuit intermittent open (Hall effect)
- SIGRTN circuit intermittent open (Hall effect)
- CKP+ circuit intermittent short to voltage (VR type)
- CKP- circuit intermittent short to voltage (VR type)
- CKP circuit intermittent short to voltage (Hall effect)
- VREF circuit intermittent short to voltage (Hall effect)
- SIGRTN circuit intermittent short to voltage (Hall effect)
- CKP+ circuit intermittent short to ground (VR type)
- CKP- circuit intermittent short to ground (VR type)
- CKP circuit intermittent short to ground (Hall effect)
- VREF circuit intermittent short to ground (Hall effect)
- SIGRTN circuit intermittent short to ground (Hall effect)
- CKP sensor incorrectly installed
- Damaged CKP sensor
- Incorrect, damaged or corroded connections
- Arcing secondary ignition components (coil, wires and plugs)
- Arcing relays or other high current devices (cooling fan or starter motor)
- On board 2 way radio transceiver
- Radio frequency interference or electromagnetic interference from an external source
- Incorrectly grounded high power aftermarket equipment
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| Diagnostic Aids: |
|
| Application |
Key On Engine Off |
Key On Engine Running |
Continuous Memory |
| All |
GO to PINPOINT TEST A
. |