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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSBMW1993740IL (E32/2) V8-3982CC 4.0L DOHC (M60)REPAIR AND DIAGNOSISLIGHTING AND HORNSTRAILER LIGHTING MODULETESTING AND INSPECTIONINITIAL INSPECTION AND DIAGNOSTIC OVERVIEWDESCRIPTION OF BMW DIAGNOSTIC SYSTEMSYSTEMATIC TROUBLESHOOTINGWIRE TESTINGSIGNAL TEST USING MULTIMETER FUNCTION
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)
Signal Test Using Multimeter Function
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)SECTION Signal Test Using Multimeter Function
Image Legend:
1 FREQ ON (+), yellow
2 FREQ ON (-), black
Signal Test Using Multimeter Function
Measuring instrument: BMW SERVICE TESTER
Test leads: FREQ ON (+), yellow; FREQ ON (-), black; Diagnosis lead or Universal lead
Test Procedure:
Connect diagnosis lead or lead terminal 31 of universal lead to vehicle ground (measured values will otherwise be falsified).
Connect the black FREQ ON (-) terminal to vehicle ground and the yellow FREQ ON (+) terminal to the wire to be tested.
Select *M* for multimeter and
- "14" for frequency in Hertz,
- "15" for pulse duration in ms,
- "16" for pulse duty factor in % or
- "17" for pulse duration in ms.
The measurement value is displayed on the screen.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
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.