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Chevrolet Engine User manual

  • I have analyzed the document about the diagnostic instructions for the Chevy Truck Equinox AWD L4-2.4L, specifically focusing on the P0315 error code. This document provides guidance on troubleshooting the Crankshaft Position System Variation Not Learned issue, outlining system descriptions, error conditions, and repair steps. I'm ready to answer your questions about the diagnostic process and procedures described here.
  • What does DTC P0315 indicate?
    What is the crankshaft position variation learn feature used for?
    What should I do if DTC P0315 is set?
2/22/22, 2:56 AM
Engine Controls and Fuel (ALL Diagnostic Trouble Codes ( DTC )) - ALLDATA Repair
https://my.alldata.com/repair/#/repair/article/50891/component/3926/itype/423/nonstandard/11216/selfRefLink/false
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2012 Chevy Truck Equinox AWD L4-2.4L
Vehicle > ALL Diagnostic Trouble Codes ( DTC ) > Testing and Inspection > P Code Charts > P0315
ENGINE CONTROLS AND FUEL
Document ID: 2243108
Diagnostic Instructions
Perform the prior to using this diagnostic procedure.Diagnostic System Check - Vehicle
Review for an overview of the diagnostic approach.Strategy Based Diagnosis
provides an overview of each diagnostic category.Diagnostic Procedure Instructions
DTC Descriptor
DTC P0315
Crankshaft Position System Variation Not Learned
Circuit/System Description
The crankshaft position variation learn feature is used to calculate reference period errors caused by slight tolerance
variations in the crankshaft, and the crankshaft position sensor. The calculated error allows the engine control
module (ECM) to accurately compensate for reference period variations. This enhances the ability of the ECM to
detect misfire events over a wider range of engine speed and load conditions.
The crankshaft position system variation compensating values are stored in ECM memory after a learn procedure
has been performed and the ignition switch is turned to the OFF position for at least 30 s. If the actual variation is
not within the crankshaft position system variation compensating values stored in the ECM, DTC P0300 may set.
If the crankshaft position system variation values are not stored in the ECM memory or a proper ECM power down
does not occur after completing the Crankshaft Position Learn Procedure, DTC P0315 sets.
Conditions for Running the DTC
Engine is Running.
The DTC runs continuously when the above condition is met.
Conditions for Setting the DTC
The ECM detects that the crankshaft position system variation values are not stored in memory.
Action Taken When the DTC Sets
DTC P0315 is a Type A DTC.
Conditions for Clearing the MIL/DTC
DTC P0315 is a Type A DTC.
2/22/22, 2:56 AM
Engine Controls and Fuel (ALL Diagnostic Trouble Codes ( DTC )) - ALLDATA Repair
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Diagnostic Aids
This test procedure requires that the vehicle battery has passed a load test and is completely charged. Refer to
.Battery Inspection/Test
Reference Information
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
for scan tool informationControl Module References
Circuit/System Verification
1. Perform the scan tool procedure.Crankshaft Position Variation Learn
2. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the
conditions that you observed in the Freeze Frame/Failure Records data.
3. Verify the DTC is not set.
Replace the K20 Engine Control Module.
If the DTC sets
If the DTC does not set
4. All OK
Repair Instructions
Perform the after completing the repair.Diagnostic Repair Verification
for engine control module replacement, programming, and setupControl Module References
/