diff --git a/connMgr.py b/connMgr.py
index 795bb83..15bad92 100644
--- a/connMgr.py
+++ b/connMgr.py
@@ -24,6 +24,7 @@ CONNLEVEL_15_SLAC_ONGOING = 15
 CONNLEVEL_10_ONE_MODEM_FOUND = 10
 CONNLEVEL_5_ETH_LINK_PRESENT = 5
 
+CONNMGR_CYCLES_PER_SECOND = 33 # 33 cycles for one second, is 30ms call cycle
 CONNMGR_TIMER_MAX = (5*33) # 5 seconds until an OkReport is forgotten.
 CONNMGR_TIMER_MAX_10s = (10*33) # 10 seconds until an OkReport is forgotten.
 CONNMGR_TIMER_MAX_15s = (15*33) # 15 seconds until an OkReport is forgotten.
@@ -133,8 +134,10 @@ class connMgr():
     def TcpOk(self):
         self.timerTCP = CONNMGR_TIMER_MAX_10s
 
-    def ApplOk(self):
-        self.timerAppl = CONNMGR_TIMER_MAX_10s
+    def ApplOk(self, time_in_seconds=10):
+        # The application confirmed to have communication. It can decide, based on its state,
+        # how long the confirmation shall hold. Default is ten seconds.
+        self.timerAppl = time_in_seconds * CONNMGR_CYCLES_PER_SECOND
 
 
 def testCallbackAddToTrace(s):
diff --git a/fsmEvse.py b/fsmEvse.py
index 92876d6..f18b0bb 100644
--- a/fsmEvse.py
+++ b/fsmEvse.py
@@ -150,7 +150,11 @@ class fsmEvse():
                 self.enterState(stateWaitForFlexibleRequest) # todo: not clear, what is specified in DIN               
             if (strConverterResult.find("CableCheckReq")>0):
                 # todo: check the request content, and fill response parameters
+                # todo: make a real cable check, and while it is ongoing, send "Ongoing".
                 msg = addV2GTPHeader(exiEncode("EDf")) # EDf for Encode, Din, CableCheckResponse
+                if (testsuite_faultinjection_is_triggered(TC_EVSE_ResponseCode_Failed_for_CableCheckRes)):
+                    # send a CableCheckResponse with Responsecode Failed
+                    msg = addV2GTPHeader("809a0125e6cecc5020804080000400")
                 self.addToTrace("responding " + prettyHexMessage(msg))
                 self.publishStatus("CableCheck")
                 if (not testsuite_faultinjection_is_triggered(TC_EVSE_Timeout_during_CableCheck)):
@@ -181,6 +185,9 @@ class fsmEvse():
                 if (testsuite_faultinjection_is_triggered(TC_EVSE_Shutdown_during_PreCharge)):
                     # send a PreChargeResponse with StatusCode EVSE_Shutdown, to simulate a user-triggered session stop
                     msg = addV2GTPHeader("809a02180189551e24fc9e9160004100008182800000")
+                if (testsuite_faultinjection_is_triggered(TC_EVSE_ResponseCode_Failed_for_PreChargeRes)):
+                    # send a PreChargeResponse with ResponseCode Failed
+                    msg = addV2GTPHeader("809a0125e6cecc516080408000008284de880800")
                 self.addToTrace("responding " + prettyHexMessage(msg))
                 self.publishStatus("PreCharging " + strPresentVoltage)
                 if (not testsuite_faultinjection_is_triggered(TC_EVSE_Timeout_during_PreCharge)):
@@ -220,6 +227,9 @@ class fsmEvse():
                 if (testsuite_faultinjection_is_triggered(TC_EVSE_Shutdown_during_CurrentDemand)):
                     # send a CurrentDemandResponse with StatusCode EVSE_Shutdown, to simulate a user stop request
                     msg = addV2GTPHeader("809a0125e15c2cd0e000410000018280001818000000040a1b648030300002038486580800")
+                if (testsuite_faultinjection_is_triggered(TC_EVSE_ResponseCode_Failed_for_CurrentDemandRes)):
+                    # send a CurrentDemandResponse with ResponseCode Failed
+                    msg = addV2GTPHeader("809a0125e6cecc50e0804080000082867dc8081818000000040a1b64802030882702038486580800")
                 self.addToTrace("responding " + prettyHexMessage(msg))
                 self.publishStatus("CurrentDemand")
                 if (not testsuite_faultinjection_is_triggered(TC_EVSE_Timeout_during_CurrentDemand)):
diff --git a/fsmPev.py b/fsmPev.py
index 27ba218..e1da261 100644
--- a/fsmPev.py
+++ b/fsmPev.py
@@ -158,6 +158,10 @@ class fsmPev():
         msg = addV2GTPHeader(self.exiEncode("EDF_"+self.sessionId + "_" + soc)) # EDF for Encode, Din, CableCheckReq
         self.addToTrace("responding " + prettyHexMessage(msg))
         self.Tcp.transmit(msg)
+        # Since the response to the CableCheckRequest may need longer, inform the connection manager to be patient.
+        # This makes sure, that the timeout of the state machine comes before the timeout of the connectionManager, so
+        # that we enter the safe shutdown sequence as intended.
+        self.connMgr.ApplOk(31)
     
     
     def sendCurrentDemandReq(self):
@@ -485,6 +489,7 @@ class fsmPev():
                     msg = addV2GTPHeader(self.exiEncode("EDG_"+self.sessionId+"_"+str(soc)+"_"+str(EVTargetVoltage))) # EDG for Encode, Din, PreChargeReq
                     self.addToTrace("responding " + prettyHexMessage(msg))
                     self.Tcp.transmit(msg)
+                    self.connMgr.ApplOk(31) # PreChargeResponse may need longer. Inform the connection manager to be patient.
                     self.enterState(stateWaitForPreChargeResponse)
                 else:
                     if (self.numberOfCableCheckReq>60): # approx 60s should be sufficient for cable check. The ISO allows up to 55s reaction time and 60s timeout for "ongoing".
diff --git a/mytestsuite.py b/mytestsuite.py
index 8cd6332..c9dd78a 100644
--- a/mytestsuite.py
+++ b/mytestsuite.py
@@ -19,11 +19,11 @@ from configmodule import getConfigValue, getConfigValueBool
 # The list of test cases. Each must have a unique test case ID.
 TC_NOTHING_TO_TEST = 0
 TC_EVSE_ResponseCode_SequenceError_for_SessionSetup = 1
-TC_EVSE_ResponseCode_SequenceError_for_ServiceDiscoveryRes = 2
-TC_EVSE_ResponseCode_SequenceError_for_ServicePaymentSelectionRes = 3
-TC_EVSE_ResponseCode_SequenceError_for_ContractAuthenticationRes = 4
-TC_EVSE_ResponseCode_ServiceSelectionInvalid_for_ChargeParameterDiscovery = 5
-TC_EVSE_ResponseCode_Failed_for_CableCheckRes = 6
+TC_EVSE_ResponseCode_Failed_for_CableCheckRes = 2
+TC_EVSE_ResponseCode_SequenceError_for_ServiceDiscoveryRes = 3
+TC_EVSE_ResponseCode_SequenceError_for_ServicePaymentSelectionRes = 4
+TC_EVSE_ResponseCode_SequenceError_for_ContractAuthenticationRes = 5
+TC_EVSE_ResponseCode_ServiceSelectionInvalid_for_ChargeParameterDiscovery = 6
 TC_EVSE_ResponseCode_Failed_for_PreChargeRes = 7
 TC_EVSE_ResponseCode_Failed_for_PowerDeliveryRes = 8
 TC_EVSE_ResponseCode_Failed_for_CurrentDemandRes = 9
@@ -162,7 +162,7 @@ def testsuite_choose_testcase():
             testsuite_TcTitle = "ServiceSelectionInvalid in ChargeParameterDiscoveryshall lead to SafeShutdown"
         
         if (testsuite_testcase_number == TC_EVSE_ResponseCode_Failed_for_CableCheckRes):
-            testsuite_delayCycles=2 # after two ok cycles, we inject the fault in the third cycle
+            testsuite_delayCycles=0 # immediately in the first message
             testsuite_expectedResult = "TSRS_SafeShutdownFinished"
             testsuite_TcTitle = "Failed in CableCheckRes shall lead to SafeShutdown"