Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the logical successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la
Vehicle Speed Sensor: Description and Operation
With the
ignition switch in ON (II) or START (III), battery voltage is supplied through fuse 24 and the BLK/YEL wire to the
Vehicle Speed Sensor (VSS). The sensor is grounded by the BLK wire to G101. The speedometer and other control units in the circuit supply about 5
volts to the YEL/WHT wire. The vehicle speed sensor (VSS) intermittently grounds the YEL/WHT wire which generates a pulsed signal in it. The number of pulses per minute increases/decreases with the speed of the car.