Anti-Theft System

DTC P1260 DETECTION CONDITION AND POSSIBLE CAUSE

DTC P1260	ANTI-THEFT SYSTEM
DETECTION CONDITION	P1260 indicates the anti-theft system has determined a theft condition existed and the engine is disabled.
POSSIBLE CAUSE	Previous theft condition. Anti-theft system failure.

DTC P1260 INSPECTION

STEP	INSPECTION		ACTION
1	CHECK ALL OTHER PASSIVE ANTI-THEFT (PATS) DTCs Repair all other PATS DTCs before P1260. Refer to IMMOBILIZER SYSTEMS . Have all other PATS DTCs been diagnosed?	Yes	Go to next step.
1		No	Refer to IMMOBILIZER SYSTEMS .
2	CHECK FOR OTHER POWERTRAIN DTCs Repair all other powertrain DTCs before P1260. Have all other powertrain DTCs been No diagnosed?	Yes	Go to next step.
2		No	Go to appropriate DTC Troubleshooting.
3	ATTEMPT TO START ENGINE Complete Keep Alive Random Access Memory (KAM). Reset to clear DTC 1260. This reset initializes the PCM to communicate with the PATS. Cycle ignition key from OFF to ON (RUN) 3--5 times, each time leaving the key in ON (RUN) for at least 3 seconds. This initializes the PCM and Anti-Theft system on certain applications. Attempt to start the engine. Does the engine start?	Yes	No system faults exist at present time. For intermittent No Starts or Start Stalls, check for intermittent PATS faults. NOTE: PATS cannot stall the engine after 1 second of operation. For intermittent Stalls while driving, verify NGS Tester to PCM communication during concern. If PCM communication error occurs, possible causes are: Loss of PWRS or GNDS to PCM. Faulty PCM PWR relay. Faulty EEC PWR diode. Repair as necessary and return vehicle to customer.
3		No	DTC P1260 is not the cause of the No Start. See DIAGNOSTIC INDEX to diagnose the No Start symptom.