No Crank
Mechanic-first diagnostic path for no-crank complaints before replacing the starter or battery.
A no-crank complaint should be split into battery capacity, cable voltage drop, starter command, and starter motor behavior before parts are priced.
Common Sounds or Signs
- Single click when the key or start button is pressed
- Rapid clicking from low voltage
- No sound from the starter relay or starter
- Intermittent crank after sitting, heat soak, or cable movement
Quick Checks
- Load test the battery before condemning the starter
- Check voltage drop on positive and ground cable paths
- Verify starter relay, fuse, and crank command signal
- Inspect battery terminals, grounds, and starter connections
Inspection Priority
- Verify battery voltage and load-test results first
- Inspect starter circuit command before replacement
- Confirm charging system health when the battery repeatedly tests low
Common Causes
- Weak battery
- High-resistance battery cable or ground
- Starter motor or solenoid failure
- Starter relay, fuse, neutral safety, clutch switch, or command issue
Likely Diagnostic Paths
- If voltage falls low during crank request, battery and cable checks come before starter replacement.
- If battery voltage stays strong but the starter does not respond, inspect command signal, relay, fuse, and starter connections.
- If the starter clicks or works intermittently with heat, starter and cable voltage-drop checks move higher.
Diagnostic Path
Pick the first inspection path.
Battery and Cable Path
Prove the vehicle has enough power and ground before pricing a starter.
- Load test battery state of health
- Voltage-drop positive and ground cables
- Inspect terminals and ground straps
Starter Circuit Path
When power is available, confirm the starter receives the correct command before replacing it.
- Check starter relay and fuse operation
- Verify crank signal at the starter solenoid when accessible
- Check immobilizer or neutral safety clues when command is missing
Common Next Steps
Quick checks before expanding the estimate.
Test charging voltage
Measure alternator output and battery voltage under load.
Inspect serpentine belt
Check belt condition, tensioner travel, and pulley alignment.
Verify battery condition
Charge and load test before blaming the alternator or starter.
Related Inspection
Recommended Next Repair Paths
Compare repair paths before replacing parts.
Starter Replacement Cost
Use when power, ground, and command checks prove the starter is the fault.
Battery Replacement Cost
Use when load testing proves the battery cannot support cranking.