Air Gap Inspection

Verify that the CKP sensor is securely installed.
Using a thickness gauge, measure the air gap between the plate projections at the back of crankshaft pulley and the CKP sensor.
- If not within the specification, inspect the plate projections for cracks or bending.
  - If there is any malfunction, replace the plate.
  - If the monitor item condition/specification (reference) is not within the specification, even though there is no malfunction, carry but the "Circuit Open/Short Inspection".
    
    Fig 1: Measuring Air Gap Between Plate Projections
    Courtesy of MAZDA MOTORS CORP.
Air gap

0.5-1.5 mm {0.02-0.05 in}