Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r8bcb6b1342198d6d87d1350b2ca61a932a4ff006 -r85d0f84a10f01f959796e59a83c3a86c3eff10f7
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 8bcb6b1342198d6d87d1350b2ca61a932a4ff006)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 85d0f84a10f01f959796e59a83c3a86c3eff10f7)
@@ -8,7 +8,7 @@
 * @file    SystemCommMessages.c
 *
 * @author  (last)      Dara Navaei
-* @date    (last)      01-Mar-2024
+* @date    (last)      16-Sep-2024
 *
 * @author  (original)  Dara Navaei
 * @date    (original)  05-Nov-2019
@@ -1265,14 +1265,14 @@
 
 /*********************************************************************//**
  * @brief
- * The handleStartStopDGHeatDisinfect function handles a request start or
- * stop DG heat disifect mode.
+ * The handleStartStopDGActiveCoolHeatDisinfect function handles a request start or
+ * stop DG active cool heat disifect mode.
  * @details Inputs: none
  * @details Outputs: message handled
  * @param message: a pointer to the message to handle
  * @return result
  *************************************************************************/
-BOOL handleStartStopDGHeatDisinfect( MESSAGE_T *message )
+BOOL handleStartStopDGActiveCoolHeatDisinfect( MESSAGE_T *message )
 {
     BOOL status = FALSE;
 
@@ -1284,7 +1284,8 @@
 
         if ( TRUE == startingDGHeatDisinfect )
         {
-            status = startDGHeatDisinfect();
+            setActiveOrPassiveHeatDisinfectStatus( FALSE );
+            status = startDGHeatDisinfect( FALSE );
         }
         else
         {
@@ -1727,7 +1728,7 @@
  * start or stop DG heat disinfect active cool mode.
  * @details Inputs: none
  * @details Outputs: message handled
- * @param message: a pointer to the message to handle
+ * @param message a pointer to the message to handle
  * @return result
  *************************************************************************/
 void handleStartStopDGHeatDisinfectActiveCool( MESSAGE_T* message )
@@ -1968,7 +1969,29 @@
     serializeMessage( msg, COMM_BUFFER_OUT_CAN_DG_2_HD, ACK_REQUIRED );
 }
 
+/*********************************************************************//**
+ * @brief
+ * The handleStartStopDGPassiveHeatDisifnect function handles a request to
+ * start or stop DG passive cool heat disinfect.
+ * @details Inputs: none
+ * @details Outputs: message handled
+ * @param message a pointer to the message to handle
+ * @return result
+ *************************************************************************/
+void handleStartStopDGPassiveCoolHeatDisifnect( MESSAGE_T* message )
+{
+    BOOL status = FALSE;
 
+    if ( message->hdr.payloadLen == sizeof(U32) )
+    {
+        setActiveOrPassiveHeatDisinfectStatus( TRUE );
+        status = startDGHeatDisinfect( TRUE );
+    }
+
+    sendAckResponseMsg( (MSG_ID_T)message->hdr.msgID, COMM_BUFFER_OUT_CAN_DG_2_HD, status );
+}
+
+
 // ***********************************************************************
 // **************** Message Handling Helper Functions ********************
 // ***********************************************************************