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Honda Workshop Service and Repair Manuals

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Sensors and Switches - Emission Control Systems > < Transmission Position Switch/Sensor, A/T|Testing and Inspection|Page 423

Civic Sedan L4-1493cc 1.5L SOHC (D15B2) TBI (1989)

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Speed Pulser: Description and Operation

    The signal generated by the speed pulser, which produces 4 pulses (switch closures to ground) for each revolution of the speedometer cable is
used by the ECU for EVAP purge control solenoid valve, as well as automatic transmission lock-up control.

Sensors and Switches - Emission Control Systems > < Transmission Position Switch/Sensor, A/T|Testing and Inspection|Page 423