Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Starter Cranking Circuit Test
Make test connections as shown in illustration. Crank engine with ignition off (disconnect and ground high tension lead from coil and connect jumper from battery terminal of starter relay to "S" terminal of relay). Maximum allowable voltage drop should be as follows:
- With voltmeter negative lead connected to starter terminal and positive lead connected to battery positive terminal (connection 1), voltage drop should not exceed.5 volt.
- With voltmeter negative lead connected to battery terminal of starter relay and positive lead connected to battery positive terminal (connection 2), voltage drop should not exceed.1 volt.
- With voltmeter negative lead connected to starter terminal of starter relay and positive lead connected to battery positive terminal (connection 3), voltage drop should not exceed.3 volt.
- With voltmeter negative lead connected to negative terminal of battery and positive lead connected to engine ground (connection 4), voltage drop should not exceed.1 volt.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.