Fault Modes

Fault Mode 1:

These failures will isolate the ABS/TCCM from the system resulting in the loss of all messages normally transmitted and received by the ABS/TCCM.

Fault Mode 2:

This failure will isolate the TCM from the system resulting in the loss of all messages normally transmitted and received messages by the TCM.

Fault Mode 3:

This failure will isolate the ECM from the system resulting in the loss of all messages normally transmitted and received messages by the ECM.

Fault Mode 4:

This failure will isolate the 'J' gate from the system resulting in the loss of all messages from other nodes.

NOTE: Because the network remains intact, fault 4 does not affect the external diagnostic capability.

Fault Mode 5:

These failures will isolate the Instrument cluster (INST) from the system resulting in the loss of all messages normally transmitted by the INST.

Fault Mode 6:

These failures will divide the network so that communication between the TCM and ABS/TCCM will remain, similarly communication between the ECM and INST will be unaffected.

Fault Mode 7:

This failure will affect the network so that only communication between the ECM and INST will be possible.

Fault Mode 8:

This failure will affect the network so that only communication between the ABS/TCCM and TCM will be possible.

Fault Mode 9:

The failure will prevent ALL network communication