Pick-Up Coil Resistance Check

On Mercedes-Benz vehicles, make sure ignition switch is "OFF". Disconnect pick-up plug connector (green cable) from control module. Attach ohmmeter leads (set to x1000 scale) to center pin (terminal 7) of cable and to larger circular pin (terminal 3) of green cable.
On all other models, turn ignition switch off and disconnect connector from control module. Connect ohmmeter leads (set in x100 scale) to terminals 7 and 31d of harness connector. See Fig 1. Measure pick-up coil resistance.

If resistance readings are not to specifications, remove connector from distributor and take reading at pick-up coil pins at distributor. If readings are still not to specifications, replace pick-up coil.

Fig 1: Ohmmeter Hookups for Pick-Up Coil Resistance and Short Checks

Courtesy of NOT AVAILABLE

Pick-Up Coil Resistance Specifications

Application		Ohms
BMW		520-700
Fiat Strada & X1/9		890-1285
Mercedes-Benz		500-700
Porsche 928		485-700
Saab		895-1285
Volvo
	4-Cylinder	950-1250
	6-Cylinder	540-660