General Specification Electrical Function gmw3110 General Motors Local Area Network Enhanced Diagnostic Test Mode Specification

testFailedSinceDTCCleared 
This bit shall indicate that a current DTC is or has been set 
sometime since the last time the DTC status was reset. 
1. Bit set to 1 = Test failed since DTCs have been cleared. 
2. Bit set to 0 = Test not failed since DTCs have been cleared. 
3. Bit will be set to a value of 0 on a successful code clear. 
M 
U 
U 
TFSDTCC 
2 
testNotPassedSinceDTCCleared 
This bit shall indicate a value of 0 once the test indicates a 
passed result. A value of 1 indicates that the test has not run, or 
that the test has run and failed. 
1. Bit set to 1 = Test not passed since DTC cleared. 
2. Bit set to 0 = Test passed since DTC cleared. 
3. Bit will be set to a value of 1 on a successful code clear. 
M 
M
1 
Note 1
M
1 
Note 1
TNPSDTCC 
1 
currentDTC 
A current DTC shall indicate that test conditions have been met 
and the test results show that a fault is currently present. This bit 
shall indicate the results of the last diagnostic test performed. A 
current code status may span multiple power cycles since it 
reflects the result of the last test performed.
1. Bit set to 1 = DTC is current. 
2. Bit set to 0 = DTC is not current. 
3. Bit will be set to a value of 0 on a successful code clear. 
M 
M 
M 
CDTC 
0 
DTCSupportedByCalibration 
This bit shall indicate that a node will trigger the test associated 
with a particular DTC as soon as the criteria for performing the 
test have been satisfied. 
1. Bit set to 1 = DTC supported. 
2. Bit set to 0 = DTC not supported. 
3. Bit is NOT altered by a code clear attempt. 
U 
U 
U 
DTCSBC 
Note 1:
M
1
– The intent of these bits is to provide build integrity and repair verification. Deviation from supporting these bits (e.g., 
Hardware limitations) shall be negotiated by service, assembly, and the DRE, and documented in the CTS.