Circuit Description

The VSS circuit uses a Hall Effect switch to inform the PCM of vehicle speed.

Conditions required to set DTC are:

• Engine is running.
• ECT is above 140°F (60°C).
• Engine speed is 800-2500 RPM.
• Throttle angle is 10-40 percent.
• Engine load is greater than 50 kPa.
• System voltage is 10-16 volts.
• PCM detects no VSS signal.