Test Specifications
Pulse transmitter
Resistance between terminals 1 and 2 960 Ohms ± 10%
Crankshaft position sensor *
a. Resistance between terminals 8 and 10 80 ± 10 Ohms
Ignition coil
Resistance between 1 and 15 0.5 Ohms + 10%
Resistance between 15 and 4 6K Ohms + 10%
High voltage
Resistance across rotor contacts 1000 Ohms ± 20%
Resistance of angled caps at coil and distributor 1000 Ohms ± 20%
Resistance of shielded spark plug connectors 5000 Ohms ± 20%
*TDC sensor is mounted above the vibration damper, and is wired to the engine diagnostic plug only. (Terminal designations are for the diagnostic plug).
Note; BMW uses solid core wire with screw on resistors at each end. Because of this, all wires should have about the same resistance, regardless of length (compared to carbon core wire in which the resistance increases with the length of the wire).
For additional Motronic information, see "FUEL INJECTION" section.