SECURITY LIGHT: DTC 15 (WDS: DTC B1601)


DTC 15 (B1601)	PCM received incorrect ID number from key (transponder).
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


Step	Inspection		Action
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.
1		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.
2		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.)
3		No	Troubleshooting is completed.