Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r54d18d86b3947c977163f87fc9f07e6799b1f2c9 -r61c74b7c3a092f9e2900665f1a4f0391f78c5c03
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 54d18d86b3947c977163f87fc9f07e6799b1f2c9)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 61c74b7c3a092f9e2900665f1a4f0391f78c5c03)
@@ -5164,4 +5164,32 @@
     // respond to request
     sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
 }
+
+/*********************************************************************//**
+ * @brief
+ * The handleTestRunModeFillForCalibrationCheck function handles a request
+ * to run the mode fill for calibration check (0 = prime, 1 = bicarb test,
+ * 2 = acid test)
+ * @details Inputs: none
+ * @details Outputs: message handled
+ * @param message a pointer to the message to handle
+ * @return none
+ *************************************************************************/
+void handleTestRunModeFillForCalibrationCheck( MESSAGE_T* message )
+{
+    BOOL result = FALSE;
+
+    if ( sizeof(U32) == message->hdr.payloadLen )
+    {
+        U32 modeFillForCalibrationState;
+
+        memcpy( &modeFillForCalibrationState, message->payload, sizeof(U32) );
+
+        result = testSetModeFillForCal( modeFillForCalibrationState );
+    }
+
+    // respond to request
+    sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
+}
+
 /**@}*/