P0513

P0513-INVALID SKIM KEY
For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.
- When Monitored:
Key on

- Set Condition:
Invalid Key Code received from WCM





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure.

1. ACTIVE DTC

NOTE: An external Radio-Frequency Identification (RFID) key (and/or pass/radio key), such as one used to gain access to a 24 hour gym, can cause this DTC to set and create a no start condition. Inspect the customer's 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 ECM equipped vehicles, the vehicle should start once the RFID key is removed. If the vehicle does not start, continue with the diagnostic test.

1. Ignition on, engine not running.
2. With the scan tool, read the ECM DTCs.

Is the DTC active at this time?

Yes

- Go To 2

No

- Go To 6

2. NO COMMUNICATION WITH WCM
1. With the scan tool, attempt to communicate with the WCM.

Can the scan tool communicate with the WCM?

Yes

- Go To 3

No

- Go to and perform the appropriate diagnostic procedure.
- Perform the WCM VERIFICATION TEST. Wireless Control Module (WCM) Verification Test.

3. WCM TROUBLE CODES SET
1. With the scan tool, check for SKIM DTCs.

Are any DTCs present in the WCM?

Yes

- Go to and perform the appropriate diagnostic procedure.
- Perform the WCM VERIFICATION TEST. Wireless Control Module (WCM) Verification Test.

No

- Go To 4

4. VIN PROGRAMMED INTO ECM
1. With the scan tool, display the VIN that is programmed in the ECM.

Has a VIN been programmed into the ECM?

Yes

- Go To 5

No

- Program the correct VIN into the ECM and retest.
- Perform the WCM VERIFICATION TEST. Wireless Control Module (WCM) Verification Test.

5. ENGINE CONTROL MODULE (ECM)
1. Turn the ignition off.
2. Replace and program the SKIM.
3. Ignition on, engine not running.
4. With the scan tool, erase all SKIM and ECM DTCs.
5. Attempt to start and idle the engine.
6. With the scan tool, read the ECM DTCs.

Does the scan tool display this code?

Yes

- Check the ECM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. Replace and program the Engine Control Module.
- Perform the WCM VERIFICATION TEST. Wireless Control Module (WCM) Verification Test.

No

- Test Complete.

6. IGNITION KEY

NOTE: You must obtain the SKIM pin number.

NOTE: This DTC could have been set if the SKIM harness connector was disconnected, or if the SKIM was replaced recently.

NOTE: All keys that the customer uses for this vehicle must be tested to verify they are operating properly.

1. Ignition on, engine not running.
2. Verify the correct VIN is programmed into the ECM and SKIM.
3. Turn the ignition off.
4. With each customer key turn the ignition on and crank the engine to start.
5. With the scan tool, read the ECM DTCs. Look for P0513.

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

Is the DTC P0513 still active?

Yes

- Replace the Ignition Key.
- Perform the WCM VERIFICATION TEST. Wireless Control Module (WCM) Verification Test.

No

- Test Complete.