All values measured to ground unless otherwise noted
Conn./Plug/Pin	Pin Information	Test Value	Comments
N47-1	up to 07/99
1.1	LF VSS output, generated by L6/1, processed in ECM and sent to other ECMs	Ignition on, lift front of vehicle. Turn left front wheel > 1 rev/sec by hand > 3 VAC or with vehicle moving	Note 1
1.2	RF VSS output, generated by L6/1, processed in ECM and sent to other ECMs	Ignition on, lift front of vehicle. Turn right front wheel > 1 rev/sec by hand > 3 VAC or with vehicle moving	Note 1
2.43 2.44	LF VSS sensor, - input LF VSS sensor, + input	ECM disconnected 0.8-2.3 kOhms across pins 2.43 and 2.44 Sine wave. Frequency varies with wheel speed.	Note 2
2.17 2.18	RF VSS sensor, + input RF VSS sensor, - input	ECM disconnected 0.8-2.3 kOhms across pins 2.17 and 2.18 Sine wave. Frequency varies with wheel speed.	Note 2
N47-5	TEVES System
5	LF VSS output, generated by L6/1, processed in ECM and sent to other ECMs	Ignition on, lift front of vehicle. Turn left front wheel > 1 rev/sec by hand > 3 VAC or with vehicle moving	Note 1
34	RF VSS output, generated by L6/1, processed in ECM and sent to other ECMs	Ignition on, lift front of vehicle. Turn right front wheel > 1 rev/sec by hand > 3 VAC or with vehicle moving	Note 1
4 3	LF VSS sensor, - input LF VSS sensor, + input	ECM disconnected 0.8-2.3 kOhms across pins 4 and 3 Sine wave. Frequency varies with wheel speed.	Note 2
32 33	RF VSS sensor, + input RF VSS sensor, - input	ECM disconnected 0.8-2.3 kOhms across pins 32 and 33 Sine wave. Frequency varies with wheel speed.	Note 2
N47-5	Bosch System
1.1	LF VSS output, generated by L6/1, processed in ECM and sent to other ECMs	Ignition on, lift front of vehicle. Turn left front wheel > 1 rev/sec by hand > 3 VAC or with vehicle moving	Note 1
1.2	RF VSS output, generated by L6/1, processed in ECM and sent to other ECMs	Ignition on, lift front of vehicle. Turn right front wheel > 1 rev/sec by hand > 3 VAC or with vehicle moving	Note 1
2.43 2.44	LF VSS sensor, - input LF VSS sensor, + input	ECM disconnected 0.8-2.3 kOhms across pins 2.43 and 2.44 Sine wave. Frequency varies with wheel speed.	Note 2
2.17 2.18	RF VSS sensor, + input RF VSS sensor, - input	ECM disconnected 0.8-2.3 kOhms across pins 2.17 and 2.18 Sine wave. Frequency varies with wheel speed.	Note 2
Note 1	Square wave 20 mph / 200 Hz, 35 mph / 330 Hz
Note 2	To test, spin wheel at 1 rev/sec, measure at least 120 mVAC between both wires of sensor. If voltage is OK, measure the sensor's resistance while pulling, twisting and bending the sensor wires, looking for intermittent opens. Finally, check the sensor tip and rotor teeth for dirt or breakage. An oscilloscope can also be used to check the waveform - chipped or dirty teeth show up as missing or malformed waves.