Camshaft Position (CMP) Sensor Inspection

Reference: CAMSHAFT POSITION (CMP) SENSOR REMOVAL AND INSTALLATION 

1. Remove CMP sensor. See CAMSHAFT POSITION (CMP) SENSOR REMOVAL AND INSTALLATION .
2. Check the following.
   • Check that O-ring (1) is free from damage.
   • Check that end face of sensor and signal rotor tooth are free from any metal particles and damage.
     Fig 1: Identifying CMP Sensor O-Ring

     Courtesy of SUZUKI OF AMERICA CORP.
3. Check CMP sensor as follows.

   If faulty condition is found, replace CMP sensor. See CAMSHAFT POSITION (CMP) SENSOR REMOVAL AND INSTALLATION .

   1. Connect three new 1.5 V batteries in series and check that total voltage is 4.5 - 5.0 V.
   2. Connect batteries (1) and ohmmeter (3) to CMP sensor as shown in figure.
   3. Check that CMP sensor resistance varies as specified below by passing magnetic substance (iron) (2).
      NOTE: Be sure to keep approximately 1 mm (0.03 in) gap "a" between magnetic substance (iron) and end face of CMP sensor.

      CMP sensor resistance 

      Resistance varies between less than 20 Ω and infinity 

      Fig 2: Checking CMP Sensor For Resistance

      Courtesy of SUZUKI OF AMERICA CORP.