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HOMESERVICE MANUALSBMW1993740IL (E32/2) V8-3982CC 4.0L DOHC (M60)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULEDIAGRAMSDIAGNOSTIC AIDSPART 4 OF 4
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)

Part 4 of 4

1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)SECTION Part 4 of 4

System Troubleshooting Procedures:





Short Test Using Ohmmeter

Disconnect the battery. While holding the leads together, adjust
the ohmmeter to read zero. Remove the blown fuse and disconnect
the load. Connect one lead of the ohmmeter to the fuse terminal
that is closest to the load. Connect the other lead to a known
good ground. Starting near the FRONT POWER DISTRIBUTION BOX, move
the wire harness back and forth and watch the ohmmeter reading.
Low or no resistance indicates a short to ground in the wiring.
Infinitely high resistance indicates no short.


Current Test Using Ammeter

To measure the current, connect the ammeter leads to the connector
or terminals in series with the circuit. The ammeter will show the
current through the circuit.
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.