Primary Pulley Speed Sensor and Secondary Pulley Speed Sensor Inspection

Reference: PRIMARY PULLEY SPEED SENSOR REMOVAL AND INSTALLATION 

Reference: SECONDARY PULLEY SPEED SENSOR REMOVAL AND INSTALLATION 

1. Check the following points:
   • O-ring is free of damage.
   • End face of sensor is free of any metal particles and damage.
     Fig 1: Identifying Primary Pulley Speed Sensor And Secondary Pulley Speed Sensor

     Courtesy of SUZUKI OF AMERICA CORP.
2. Check sensors by the following procedure:
   1. Arrange 12 V battery (1) and connect its positive terminal to terminal "2" (2) and negative terminal to terminal "4" (4) of primary pulley speed sensor connector or secondary pulley speed sensor connector.
   2. Use ohmmeter to measure resistance between terminal "3" (3) of sensor connector and negative terminal of battery by passing flat-end screwdriver or the like (5) between them while maintaining an approximately 1 mm (0.03 in) gap with respect to end face of primary pulley speed sensor (6) or secondary pulley speed sensor (7).

      Primary pulley speed sensor and secondary pulley speed sensor resistance 

      Less than 220 Ω (ON) ←→ Infinity (OFF) 

      Fig 2: Measuring Resistance Between Terminal 3 Of Sensor Connector And Negative Terminal Of Battery

      Courtesy of SUZUKI OF AMERICA CORP.
3. If resistance does not vary, replace primary pulley speed sensor or secondary pulley speed sensor.