Engine Immobiliser System . How To Proceed Whit Troubleshooting. Hint: Use this procedure to troubleshoot engine immobilliser system. The Intelligent tester should be used in step 4,5 and 7. 1. Vehicle Brought to workshop, 2. Customer Problem Analysis Check and symptom check, 3. Crank engine for more than 10 seconds, 4. Check for DTCS.