SECURITY LIGHT 15, DTC B1601/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

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DTC | Security light flashing pattern | 15 | The instrument cluster has detected unregistered key ID number.
--- | --- | --- | ---
M-MDS display | Instrument cluster | B1601
PCM | P1260
POSSIBLE CAUSE | • No keys have been programmed after replacing instrument cluster. • Unprogrammed key used • Attempt made to program a ninth key • Instrument cluster malfunction

Diagnostic Procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | VERIFY NUMBER OF REGISTERED KEYS • Using the M-MDS, perform the PID/data monitor inspection and confirm the number of registered keys. (See PID/DATA MONITOR TABLE [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) • Are one or more keys registered? | Yes | Go to the next step.
No | Go to Step 3.
2 | VERIFY NUMBER OF REGISTERED KEYS • Using the M-MDS, perform the PID/data monitor inspection and confirm the number of registered keys. (See PID/DATA MONITOR TABLE [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) • Are eight keys registered? | Yes | Using the M-MDS, clear the key ID numbers as necessary, then go to the next step.
No | Go to the next step.
3 | INSPECT INSTRUMENT CLUSTER • Using the M-MDS, register the key ID number. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.) Note • Two or more keys must be registered to start the engine. • Using the registered key, turn the ignition switch to the ON position. • Is the DTC displayed again? ― Security light: 15 ― M-MDS: B1601/P1260 | Yes | Replace the instrument cluster and perform the resetting procedure for the immobilizer system when replacing the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.)
No | DTC troubleshooting completed.