Diagnosing cranking no-start conditions for a motor vehicle can be a challenging task, but following these steps can help you identify the problem: 

Check the battery: If the battery is weak or dead, the engine won't start. Use a multimeter to test the battery voltage. If it's below 12.4 volts, recharge or replace the battery. 

Check the fuel system: Make sure the fuel pump is working correctly. You can hear it hum when you turn the key to the "On" position. If you don't hear anything, check the fuel pump fuse and relay. Also, check the fuel filter to see if it's clogged. 

Check the ignition system: Check the spark plugs and ignition coils for wear and damage. Use a spark tester to check for spark at each cylinder. If there's no spark, check the ignition fuse, module, and wiring. 

Check the engine's mechanical condition: Make sure the engine is not seized or has other internal problems. You can do a compression test to check the engine's mechanical condition. 

Check the sensors: The engine needs information from various sensors to start and run correctly. Check the sensors, including the crankshaft position sensor, camshaft position sensor, and oxygen sensor, to ensure they're working correctly. 

Check the computer: The computer controls various functions in the engine, and if it's not working correctly, the engine won't start. Check for any error codes using an OBD-II scanner. 

Check the timing belt/chain: If the timing belt/chain is broken, the engine won't start. Check for wear and damage, and replace it if necessary. 

By following these steps, you can narrow down the cause of the cranking no-start condition and make the necessary repairs to get your motor vehicle running again.