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.
1987 Suzuki Samurai BaseFACTORY OEM SERVICE PROCEDURE
Electronic Control Module Ground Circuit
- The ECM system is grounded at the dash panel and the intake manifold. If either ground is bad, the system will not operate. To check ground circuit, turn ignition off and disconnect ECM connector. Using an ohmmeter connect one probe to terminal No. 1 of connector and the other probe to body ground. See Figure . Measure resistance.
- Move probe from terminal No. 1 to terminal No. 21 leaving other probe connected to body ground. Measure resistance. Ohmmeter should read zero resistance at both terminals. If any resistance is measured, check for a disconnected or dirty ground.
Factory Service Tools
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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.
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