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SECURITY LIGHT: DTC 15 (WDS: DTC B1601)

id0902e4632600

DTC 15 (B1601) | PCM received incorrect ID number from key (transponder).
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POSSIBLE CAUSE | • No keys have been registered after installation of new PCM • Unregistered key detected • Attempt made to register a ninth key Note • A maximum of only eight keys can be registered for a single vehicle. • Defective PCM

Diagnostic procedure

Step | Inspection | Action
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1 | VERIFY REGISTERED KEY IN PCM • Check the following PID/DATA monitor using WDS: - NUMKEYS • Does NUMKEYS display more than 0? | Yes | Go to the next step.
No | Go to Step 3.
2 | VERIFY REGISTERED KEY IN PCM • Check the following PID/DATA monitor using WDS: - NUMKEYS • Does NUMKEYS display more than 8? | Yes | • Erase key ID number using WDS and register key ID number. (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING.) • Go to the next step.
No | Go to the next step.
3 | INSPECT PCM • Erase key ID number using WDS and register key ID number. (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING.) • Using registered key, turn the ignition switch to the ON position. • Does security light or WDS indicate DTC 15 (B1601) again? | Yes | Replace PCM and reprogram immobilizer system. (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING.)
No | Troubleshooting is completed.