Immobilizer/security indicator blinks

Diagnostic procedure

• Symptom troubleshooting - Refer to: Keyless Access System Symptom Troubleshooting - Cannot select ON mode with keyless access, but can select ON mode with the keyless remote touching the engine start/stop switch  or Keyless Access System Symptom Troubleshooting - The doors will not unlock or lock with the keyless remote, but will unlock or lock with the door outer handles  or Keyless Access System Symptom Troubleshooting - All the doors will not lock and unlock  or Keyless Access System Symptom Troubleshooting - Immobilizer/security indicator blinks  or Keyless Access System Symptom Troubleshooting - The engine starts but stalls immediately  or Keyless Access System Symptom Troubleshooting - Cannot select ON mode with keyless access and with the keyless remote touching the engine start/stop switch 

Also check for

• Gauge control module
• Body control module
• PCM
• Harness/connections