Index: firmware/App/Services/SystemComm.c
===================================================================
diff -u -r5c608ff3680b15c3ffbb6d486194152d6fb06944 -rfadfcc3e667097327fd62202c674ab8727f81110
--- firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 5c608ff3680b15c3ffbb6d486194152d6fb06944)
+++ firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision fadfcc3e667097327fd62202c674ab8727f81110)
@@ -1268,10 +1268,14 @@
                 handleTestDGHeatersDutyCycleOverrideRequest( message );
                 break;
 
-            case MSD_ID_DG_RTC_STATUS_OVERRIDE:
-                handleDGRTCstatusOverrideRequest( message );
+            case MSD_ID_DG_RTC_CTL_REG1_STATUS_OVERRIDE:
+                handleDGRTCControlReg1StatusOverrideRequest( message );
                 break;
 
+            case MSD_ID_DG_RTC_CTL_REG3_STATUS_OVERRIDE:
+                handleDGRTCControlReg3StatusOverrideRequest( message );
+                break;
+
             default:
                 // TODO - unrecognized message ID received - ignore
                 break;
Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r5c608ff3680b15c3ffbb6d486194152d6fb06944 -rfadfcc3e667097327fd62202c674ab8727f81110
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 5c608ff3680b15c3ffbb6d486194152d6fb06944)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision fadfcc3e667097327fd62202c674ab8727f81110)
@@ -4312,7 +4312,16 @@
     sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
 }
 
-void handleDGRTCstatusOverrideRequest( MESSAGE_T * message )
+/*********************************************************************//**
+ * @brief
+ * The handleDGRTCControlReg1StatusOverrideRequest function handles a
+ * request to override RTC control register 1.
+ * @details Inputs: none
+ * @details Outputs: message handled
+ * @param message : a pointer to the message to handle
+ * @return none
+ *************************************************************************/
+void handleDGRTCControlReg1StatusOverrideRequest( MESSAGE_T * message )
 {
     TEST_OVERRIDE_PAYLOAD_T payload;
     BOOL result = FALSE;
@@ -4323,16 +4332,48 @@
         memcpy( &payload, message->payload, sizeof(TEST_OVERRIDE_PAYLOAD_T) );
         if ( FALSE == payload.reset )
         {
-            result = testSetRTCstatus( payload.state.u32 );
+            result = testSetRTCCtlReg1Status( payload.state.u32 );
         }
         else
         {
-            result = testResetRTCstatus();
+            result = testResetRTCCtlReg1Status();
         }
     }
 
     // Respond to request
     sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
 }
 
+/*********************************************************************//**
+ * @brief
+ * The handleDGRTCControlReg1StatusOverrideRequest function handles a
+ * request to override RTC control register 3.
+ * @details Inputs: none
+ * @details Outputs: message handled
+ * @param message : a pointer to the message to handle
+ * @return none
+ *************************************************************************/
+void handleDGRTCControlReg3StatusOverrideRequest( MESSAGE_T * message )
+{
+    TEST_OVERRIDE_PAYLOAD_T payload;
+    BOOL result = FALSE;
+
+    // Verify payload length
+    if ( sizeof(TEST_OVERRIDE_PAYLOAD_T) == message->hdr.payloadLen )
+    {
+        memcpy( &payload, message->payload, sizeof(TEST_OVERRIDE_PAYLOAD_T) );
+        if ( FALSE == payload.reset )
+        {
+            result = testSetRTCCtlReg3Status( payload.state.u32 );
+        }
+        else
+        {
+            result = testResetRTCCtlReg3Status();
+        }
+    }
+
+    // Respond to request
+    sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
+}
+
 /**@}*/
Index: firmware/App/Services/SystemCommMessages.h
===================================================================
diff -u -r5c608ff3680b15c3ffbb6d486194152d6fb06944 -rfadfcc3e667097327fd62202c674ab8727f81110
--- firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 5c608ff3680b15c3ffbb6d486194152d6fb06944)
+++ firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision fadfcc3e667097327fd62202c674ab8727f81110)
@@ -451,9 +451,12 @@
 // MSG_ID_DG_HEATERS_DUTY_CYCLE_OVERRIDE
 void handleTestDGHeatersDutyCycleOverrideRequest( MESSAGE_T *message );
 
-// MSD_ID_DG_RTC_STATUS_OVERRIDE
-void handleDGRTCstatusOverrideRequest( MESSAGE_T *message );
+// MSD_ID_DG_RTC_CTL_REG1_STATUS_OVERRIDE
+void handleDGRTCControlReg1StatusOverrideRequest( MESSAGE_T * message );
 
+// MSD_ID_DG_RTC_CTL_REG3_STATUS_OVERRIDE
+void handleDGRTCControlReg3StatusOverrideRequest( MESSAGE_T * message );
+
 /**@}*/
 
 #endif