Below is a test procedure to follow, if the relearn does not help check all fuses to see if they are good.
1. After having cranked the engine, leave the key in the run position and check operation of the theft or security light. If the light is flashing or on steady, perform a theft relearn procedure.
( 1. Perform a security system relearn. 2. Let the vehicle sit for more than 10 minutes with the key off. 3. Attempt to start the engine, leave the key in the run position monitoring the security system indicator. 4. After 10 minutes, the security indicator will change state. 5. Turn the key off and wait 10 seconds. 6. Attempt to start the engine. If the engine stalls, wait another 10 minutes with the key on. 7. After the second 10 minute timer has expired, turn the key off for 10 seconds. 8. Attempt to start the engine. If the engine stalls, wait another 10 minutes with the key on. 9. After the 3rd 10 minute timer has expired, shut the key off for 10 seconds. 10. The security system will relearn on the 4th starting attempt and the engine should start and run.)
2. Verify power to the injector while engine is cranking. 3. If relearn procedure does not help, check the operation of the passlock sensor. The White wire should have battery voltage and remain above 10 volts while engine is cranking. The Yellow wire should have 4 volts and change to a voltage between 0.9 and 4.0 volts as key is rotated to the start position. It should maintain that voltage value as the key is released back to the run position. 5. Check to see if the A/C BFC fuse is blown. If blown this could cause loss of injector pulse with theft or security light operating normally.