Test H: Step 26

26) Check MAP Sensor For Vacuum Leaks  Turn key off and wait 10 seconds. Disconnect vacuum hose from MAP sensor and connect vacuum pump to sensor. Apply 18 in Hg to MAP sensor. If sensor does not hold vacuum, replace MAP sensor. Remove vacuum pump. Connect vacuum hose and reconnect HEGO. Repeat QUICK TEST. If MAP holds vacuum, release vacuum and go to next step.