DTC P0513
DTC P0513 |
Diagnostic Instructions |
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Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
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Review
Strategy Based Diagnosis
for an overview of the diagnostic approach.
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Diagnostic Procedure Instructions
provides an overview of each diagnostic category.
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DTC Descriptor |
DTC P0513
Immobilizer Key Incorrect
Circuit/System Description |
The body control module (BCM) sends the pre-release information to the engine control module (ECM) via the serial data circuit. The ECM then sends a challenge to the BCM. Both the ECM and BCM perform a calculation on this challenge. If the calculated response from the BCM equals the calculation performed by the ECM, the ECM will allow vehicle starting.
Conditions for Running the DTC |
Ignition is in the ACCESSORY or RUN position.
Conditions for Setting the DTC |
The calculated response from the BCM does not equal the calculation performed by the ECM.
Action Taken When the DTC Sets |
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The security indicator in the instrument cluster will illuminate.
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Vehicle starting will be disabled.
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Conditions for Clearing the DTC |
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A current DTC P0513 will be cleared when a valid calculation is received.
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A history DTC will be cleared after 40 malfunction-free ignition cycles or when a scan tool is used to clear DTCs.
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Diagnostic Aids |
The key referenced in the DTC descriptor does not refer to the vehicle key. In this case, key is referring to the challenge response.
Reference Information |
Schematic Reference
Immobilizer Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Immobilizer Description and Operation
Electrical Information Reference
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Circuit Testing
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Connector Repairs
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Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification |
Note | ||
Because of normal system communications between the BCM and ECM, any immobilizer B-codes must be diagnosed prior to the diagnosis of P-codes. |
Perform the BCM immobilizer learn using the body control module IMMO function with existing transponder or remote key in SPS. Refer to Immobilizer system component programming . The BCM should successfully complete the learn and the vehicle should start.