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.
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HOMESERVICE MANUALSBMW1993740IL (E32/2) V8-3982CC 4.0L DOHC (M60)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONSYMPTOM RELATED DIAGNOSTIC PROCEDURESDIAGNOSIS BY SYMPTOMCIRCUIT TESTINGSHORT TEST USING OHMMETER
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)
Short Test Using Ohmmeter
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)SECTION Short Test Using Ohmmeter
Short Test Using Ohmmeter:
Short Test Using Ohmmeter:
1 Ohmmeter
2 Fuse holder (without fuse)
3 Switch for reversing light
4 Connection to load disconnected
5 Rear light
Measuring instrument: Ohmmeter
Problem: Short to ground
Test Procedure:
Disconnect voltage source and connect ohmmeter with test lead. Disconnect load and, moving the lead to the load back and forth, observe the ohmmeter reading. The ohmmeter will indicate an infinitely high resistance for as long as there is no short-circuit.
Problem: Short-circuit between two wires
Test Procedure:
Disconnect power supply to wires to be tested and disconnect load. Connect one test lead each to the two wires. Move the wires back and forth and observe the ohmmeter reading. The ohmmeter will indicate a resistance value with respect to zero as soon as a short-circuit occurs between the two wires.
RENDER: 1.0x
NO RELATED
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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.