Index: firmware/App/Modes/SelfTests.c
===================================================================
diff -u -re6ce0ae6f62370bc33113bf614678fed170ff3b8 -rb5409fe2cdc66d0ee781d94ce33a33040e2edf41
--- firmware/App/Modes/SelfTests.c	(.../SelfTests.c)	(revision e6ce0ae6f62370bc33113bf614678fed170ff3b8)
+++ firmware/App/Modes/SelfTests.c	(.../SelfTests.c)	(revision b5409fe2cdc66d0ee781d94ce33a33040e2edf41)
@@ -133,6 +133,7 @@
 static BOOL useHeparin;                                             ///< Flag indicates the user of heparin.
 static BOOL selfTestsResumeRequested;                               ///< Flag indicates user requesting self-tests resume.
 static BOOL cartridgeUsedTestRun;                                   ///< Flag indicates whether the used cartridge test has been run.
+static BOOL occlusionBaselineWasSet;                                ///< Flag indicates whether the blood pump occlusion baseline for installed cartridge has been set.
 static BOOL doorStateAfterCartridgeInstall;                         ///< Flag indicates state of front door for saline clamp check after cartridge installed.
 
 // ********** private function prototypes **********
@@ -427,6 +428,7 @@
     previousNormalVenousPressure = 0.0;
     dryPressureTestsCompleted = FALSE;
     cartridgeUsedTestRun = FALSE;
+    occlusionBaselineWasSet = FALSE;
     selfTestStartTime = getMSTimerCount();
     selfTestPreviousPublishDataTime = getMSTimerCount();
     selfTestCartridgeSettleTime = getMSTimerCount();
@@ -961,6 +963,7 @@
         if ( TRUE == didTimeout( selfTestCartridgeSettleTime, CARTRIDGE_INSERT_PRESSURE_SETTLE_TIME_MS ) )
         {
             setOcclusionInstallLevel();  // Record occlusion pressure level after a new cartridge is installed
+            occlusionBaselineWasSet = TRUE;
             doorClosedRequired( TRUE, TRUE );
             state = DRY_SELF_TESTS_WAIT_FOR_DOOR_CLOSE_STATE;
         }
@@ -1545,10 +1548,10 @@
         selfTestStartTime = getMSTimerCount();
         selfTestsResumeRequested = FALSE;
         selfTestCartridgeSettleTime = getMSTimerCount();
+        doorClosedRequired( TRUE, TRUE );
 
         if ( TRUE == dryPressureTestsCompleted )
         {
-            doorClosedRequired( TRUE, TRUE );
             state = DRY_SELF_TESTS_SYRINGE_PUMP_PRIME_STATE;
         }
         else
@@ -1557,8 +1560,14 @@
             setValvePosition( VBA, VALVE_POSITION_B_OPEN );
             if ( TRUE == cartridgeUsedTestRun )
             {
+                doorClosedRequired( TRUE, TRUE );
                 state = DRY_SELF_TESTS_CARTRIDGE_LOADED_CHECK_STATE;
             }
+            else if ( occlusionBaselineWasSet != TRUE )
+            {
+                selfTestCartridgeSettleTime = getMSTimerCount();
+                state = DRY_SELF_TESTS_START_STATE;
+            }
             else
             {
                 state = DRY_SELF_TESTS_WAIT_FOR_DOOR_CLOSE_STATE;