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.
1988 Suzuki Samurai BaseFACTORY OEM SERVICE PROCEDURE
Ground Circuits
- ECM is grounded at both the dash and intake manifold. Feedback system will not function properly if either ground is not secure. Turn ignition off. Disconnect ECM connector.
- Attach ohmmeter between terminal No. 1 (harness side) and ground. See Figure . Note ohmmeter reading. Repeat procedure for terminal No. 21 and note ohmmeter reading. If ohmmeter reading at both terminals is zero, ground system is secure.
- If reading is not zero, repair ground as necessary. One ground wire is a Black/Green wire, mounted to firewall, near battery. Second ground wire is a Black wire, mounted to intake manifold, near thermostat housing.
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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