P0513 Invalid Skim Key

P0513 Invalid Skim Key - When monitored with the ignition on, the Powertrain Control Module (PCM) detects an invalid ignition key. The MIL light is illuminate. Vehicle security light will illuminate on the first trip this code is active.

Possible causes P0513 Code

• Incorrect VIN programmed in the PCM.
• No communication with SKREEM/WCM.
• No VIN programmed in the PCM.
• Ignition key.
• Powertrain Control Module (PCM).

Diagnostic test P0513 Invalid Skim Key

Step 1. Check for an active DTC

An external radio frequency identification (RFID) key (and/or pass/radio key), such as one use to again access to a 24 hour gym, can cause this DTC to set and create a no start condition. Inspect the customers key chain for any type of RFID key. If one is not found, question the customer to see if a spare key chain has this RFID key on it or if it was removed from the original key chain before the vehicle was released for service. If  a RFID key is present, remove the ignition key from the vehicle and remove the RFID key from the key chain. For GPEC equipped vehicles, disconnect the battery and wait a minimum of 5 minutes, reconnect and attempt to start the vehicle. For NGC equipped vehicles, turn the ignition on a minimum for one hour, and then attempt to start the vehicle. If the vehicle does not start, continue with the diagnostic test.

Turn the ignition on, with the scan tool, read DTC.

Is the DTC active?

YES, go to step 2.

NO, go to step 6.

Step 2. No communication with SKREEM/WCM

For vehicle communication problems, use the scan tool to refer to the network review screen. The screen depicts a high level of the vehicle networks. Fault and problem areas appear in red. Selecting any of the network components allows access to the source of the problem.

With the scan tool, attempt to communicate with the PCM.

Can the scan tool communication with the WCM?

YES, go to step 3.

NO, refer to sitemaps or labels, Non DTC diagnostic/communication on this site and perform the no response from the WCM diagnostic.

Step 3. SKREEM/WCM trouble code set

With the scan tool, check for WCM DTC.

Are any DTC present in the WCM?

YES, refer to sitemaps or labels DTC- B Codes (body) - WCM this site.

NO, go to step 4.

Step 4. VIN programmed into PCM

With the scan tool, display the VIN that is programmed in the PCM.

Has a VIN been programmed into the PCM?

YES, go to step 5.

NO, program the correct VIN into the PCM and reset. Perform the WCM verification test.

Step 5. Powertrain Control Module (PCM)

Turn the ignition off, replace and program the SKREEM/WCM in accordance with the service information. Turn the ignition on, with the scan tool, erase all WCM and PCM DTC. Attempt to start the engine, with the scan tool, read DTC.

Is the DTC active?

YES,

Note: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

Replace and program the Powertrain Control Module (PCM). Perform the Powertrain Verification Test.

NO, test complete.

Step 6. Ignition key

This DTC could have been set if the WCM harness connector was disconnected, or if the WCM was replaced recently. All of the ignition keys for this vehicle must be tested to verify proper operation.

If this DTC cannot be reset, it could have been an actual theft attempt.

Turn the ignition on, verify that the correct VIN is programmed into the PCM and PCM. Turn the ignition off, using each vehicle key, turn the ignition on and start the engine. With the scan tool, read DTC for each key.

Is the DTC active?

YES, replace the ignition key. Perform the Powertrain Verification Test.

NO, test complete. If this DTC cannot be reset, it could have been an actual theft attempt or caused by radio-frequency interference. Check for the following, but not limited to :

• An external radio-frequency identification (RFID) key (and/or pass/radio key), such as one used to again access to a 24 hour gym.
• Aftermarket alarms or auto start systems.
• RF gate cards or door opener.
• GPS units in vehicle.
• Gas station speed passes.

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