Starter Current Draw Test
1. Connect a Volt/Ammeter to vehicle using the equipment manufacturer recommended procedure.2. Disable the vehicle from starting by:
^ Disconnect the ignition systems electrical connector at the ignition module.
^ Or holding the accelerator pedal all the way to the floor (clear flood mode) while cranking.
3. Position the Volt/Ammeter so the display can be seen from the driver's seat. Crank the engine for 15 seconds, observe the cranking current and compare to chart.
Cranking Amps:
Cranking Amps: The average amperage drawn by the starter motor during cranking. The amperage readings are general guidelines for normal operation:
NOTE: The starter should not be engaged for more than 15 seconds at a time. If the vehicle does not start after 15 seconds, turn the ignition key to the off position for 20 seconds before attempting to restart vehicle.
IMPORTANT: As the ambient temperature decreases the amperage required to crank the engine increases.
Cranking Voltage: The average battery voltage during cranking. If the voltage is below 9.5 volts, perform the BATTERY TEST to make sure the battery is charged (green eye) and good.
Good cranking voltage and a slow starter cranking speed can be caused by loose or corroded cables.
High Amperage Draw Cranking: Replace the starter motor only after determining that there are no engine mechanical problems or fly wheel binding problems.