Slow Cranking Test
- Check battery state of charge and condition of battery cables and connections. If battery needs charging, check for proper alternator output and possible battery drain.
- Charge battery and check cranking. If slow cranking still remains, disable ignition system to read voltage during cranking. Measure cranking voltage at battery posts.
- If cranking voltage is greater than 9.6 volts, go to next step. If voltage is less than 9.6 volts, charge battery and perform battery load test. If battery load test is not within specification, replace battery. If battery load test is within specification, repair starter.
- If cranking voltage is greater than 9.6 volts, measure voltage from battery negative terminal to engine block (positive lead on engine block). If voltage is greater than .5 volt, repair ground cable and connections.
- If voltage is less than .5 volt, measure voltage at starter solenoid terminal "B". Clean and tighten connections at starter. If voltage is greater than 9 volts, check fusible link and bulkhead connector. If fusible link and bulkhead connector are okay, repair starter. If voltage is less than 9 volts, clean and tighten positive battery cable connections. If cable connections are okay, replace positive battery cable.