EGR COOLER BYPASS VALVE INSPECTION [MZR-CD 2.2]

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1. Disconnect the vacuum hose from the EGR cooler bypass valve.

2. Connect the vacuum pump to the EGR cooler bypass valve.

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3. Apply vacuum and verify that the rod moves as specified.

Vacuum (kPa {mmHg, inHg})

Valve movement

Above -33.3 {-250, -9.83}

EGR cooler side valve closed

Below -6.7 {-50, -2.0}

EGR cooler bypass valve side valve closed

Vacuum (kPa {mmHg, inHg})	Valve movement
Above -33.3 {-250, -9.83}	EGR cooler side valve closed
Below -6.7 {-50, -2.0}	EGR cooler bypass valve side valve closed

• If not as specified, replace the EGR cooler and EGR cooler bypass valve component. (See EGR COOLER REMOVAL/INSTALLATION [MZR-CD 2.2].)