volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Engine Speed (RPM) Sensor, Checking|Page 4243 > < Engine Speed (RPM) Sensor, Checking|Page 4241
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Wire resistance: max. 1.5 ohms

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Also check wires for short circuit to each other, to vehicle Ground (GND) and to B+.
Specified value: Infinite Ohms

If no malfunctions are found in wires:

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Remove sensor and check sensor wheel for secure fit, damage, and run-out.

NOTE:  There is a larger-sized gap on the sensor wheel. This gap is the reference mark and does not mean that the sensor wheel is damaged.

If nothing seems to be wrong with the sensor wheel:

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Replace Motronic Engine Control Module (ECM) -J220-.

Engine Speed (RPM) Sensor, Checking|Page 4243 > < Engine Speed (RPM) Sensor, Checking|Page 4241