Starter Voltage Drop Test Specs

Starter Voltage Drop Test Specs. Voltage drop on the ground side of the starter circuit should be no more than 0.2 volts. The voltage drop on the negative side should be 0.3 volts or less.

Starter Voltage Drop Test Specs saintjohn
Starter Voltage Drop Test Specs saintjohn from juba.therenaissancepavilion.com

The maximum allowable voltage drop including the solenoid or external relay in the starter circuit should be 0.6 volts or less. Initial battery voltage (v) state of charge (%) lowest voltage and voltage drop (v) when the starter motor starts rotation at the highest current peak; Tested vacuum advance and it tested ok;

Normally, The Voltage Drop On The Power Feed Side And Ground Side Wires, Connectors, And Connections Should Not Exceed 0.1V Or 100Mv.


Voltage drop on the ground side of the starter circuit should be no more than 0.2 volts. This will prevent mistakenly replacing a starter when the problem was a bad cable or connection. Crank the engine and note the reading.

Initial Battery Voltage (V) State Of Charge (%) Lowest Voltage And Voltage Drop (V) When The Starter Motor Starts Rotation At The Highest Current Peak;


Voltage drop testing is important because high resistance can prevent proper circuit operation. Battery test at 12.8 volts sitting The voltage drop must not exceed 0.2 volts.

Diagnosing The Starter With A Voltage Drop Test.


Cranking voltage specs range from 9.6 to 11 volts. If you get a higher voltage drop reading, check the starter motors mounting bolts for tightness. Always refer to the correct repair manual.

Sponsored By Bosch Automotive Service Solutions.


The maximum allowable voltage drop including the solenoid or external relay in the starter circuit should be 0.6 volts or less. Starter testing caution never operate the starter for more than 30 seconds at a time. Voltage drop on the ground side of the starter circuit should be no more than 0.2 volts.

This Is An Important Step And Is Often The Cause Of A Slow Cranking Complaint.


But some manufacturers will take a voltage drop reading between 0.2 and 0.6 as acceptable for the ground side of the starter circuit. If you get a higher voltage drop reading, check the starter motors mounting bolts for tightness. It's common to perform a voltage drop test on the starter circuit.

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