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 MANUALSPORSCHE1982928 AUTOMATIC TRANSREPAIR AND DIAGNOSISENGINE PERFORMANCEIGNITION SYSTEMBOSCH ELECTRONIC IGNITION SYSTEMTESTINGPICK-UP COIL SHORT CHECK
1982 Porsche 928 Automatic Trans
Pick-Up Coil Short Check
1982 Porsche 928 Automatic TransSECTION Pick-Up Coil Short Check
- On Mercedes-Benz vehicles, connect one ohmmeter lead to ground. Attach other lead to control module harness terminal 3 and then to terminal 7.
- On all other models, connect one ohmmeter lead to ground. Attach other lead to terminal 7, then to terminal 31d. Resistance reading should be greater than 200, 000 ohms for Mercedes-Benz vehicles and infinity for all other models.
- If resistance reading was not correct, disconnect harness from distributor. Connect ohmmeter leads to ground and to each pick-up coil pin in distributor. If readings are now correct, replace harness. If readings are still incorrect, replace pick-up coil.
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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.