Steering Wheel Roatation Sensor

Steering wheel rotation sensor is installed at the bottom of the steering column.

This sensor detects steering wheel rotation which is used to calculate the angle speed of the steering wheel by SSPS module.

If the angle speed was big enough for intervention into normal steering force control during high vehicle speed, which means a driver made an evasive steering maneuver to avoid an accident, SSPS module would supply enough steering support.

The sensor consists of a variable resistor.

Fig 1: Speed Sensitive Power Steering Components

Courtesy of SUZUKI OF AMERICA CORP.

Checking procedure is as follows;

1. Remove SSPS connector.
2. Turn the ignition ON.
3. Try to measure 5V across A and C terminals. If you fail, it might be A, C wiring open or short, or SSPS module malfunction.
4. Check if B+ and B-are supplied to terminal "8" and "10" respectively.
   Fig 2: Steering Wheel Roatation Sensor Test Chart

   Courtesy of SUZUKI OF AMERICA CORP.

Fig 3: Steering Wheel Roatation Sensor Schematic

Courtesy of SUZUKI OF AMERICA CORP.