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HOMESERVICE MANUALSMAZDA2013MX-5 MIATA GRAND TOURING, AUTOMATIC TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMSYMPTOM TROUBLESHOOTING [ENGINE CONTROL SYSTEM LF 2.0L]ENGINE CONTROL SYSTEM OPERATION INSPECTION [LF]EVAP SYSTEM LEAK INSPECTION USING LEAK TESTER
2013 Mazda MX-5 Miata Grand Touring, Automatic Trans

EVAP System Leak Inspection Using Leak Tester

2013 Mazda MX-5 Miata Grand Touring, Automatic TransSECTION EVAP System Leak Inspection Using Leak Tester
  1. Perform the following SST  (EVAP System Tester 134-01049A) self-test:
    NOTE:
    • If the tester does not work correctly during the self-test, refer to the tester operators manual for a more detailed self-test procedure.
    1. Verify that the control valve on the panel is in the HOLD position then open the nitrogen bottle valve.
    2. Connect the vehicle interface hose (part of the SST  ) to the SELF-TEST port located on the control panel. Hand tighten the fitting. (Do not overtighten).
    3. Turn the control valve to the TEST position.
    4. The gauge should read 331-381 mm {13-15 in}  of water.
      • If the gauge is not reading in this range, adjust the pressure by turning the black knob on the low pressure regulator at the nitrogen bottle.
    5. Turn the control valve to the HOLD position.
    6. Verify that the gauge holds pressure and that the flow meter reads no flow.
      • If there is no drop in pressure and no flow, the tester passes the self-test.
      • If the gauge leaks down, refer to the tester operators manual.
        Fig 1: Inspecting EVAP System Leak Using Leak Tester
        G07877678Courtesy of MAZDA MOTORS CORP.
  2. Connect the SST  to the vehicle.
    1. Verify that the control valve on the panel is in the HOLD position then open the nitrogen bottle valve.
    2. Remove the fuel-filler cap from the vehicle.
      • If the fuel-filler cap is not a MAZDA part or equivalent, replace it.
    3. Connect the receiver assembly (SST:  AKS441130) to the vehicle cap test hose assembly (part of the SST) and the fuel-filler cap from the vehicle.
    4. Connect the cap adaptor (SST:  AKS441131) to the vehicle cap test hose assembly (part of the SST  ) and to the fuel-filler neck.
    5. Connect the vehicle interface hose (part of the SST  ) to the center fitting of the vehicle cap test hose assembly (part of the SST  ).
  3. Connect the M-MDS to the DLC-2.
  4. Turn the ignition switch to the ON position (Engine off).
  5. Request the PCM on-board device control (Mode 08) using the M-MDS to close the change-over valve (COV) in the EVAP system leak detection pump.
    Fig 2: Identifying Cap Adatper, Receiver Assembly And Vehicle Cap Test Hose Assembly
    G07877679Courtesy of MAZDA MOTORS CORP.
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.