B0018
DTC B0018
CIRCUIT DESCRIPTION
The data bus isolator will remain closed for 625 ms after entering the short loop poll sequence. If no PCM communication is received, the isolator will be opened. If the BCM receives PCM communication after the isolator has been opened the DTC is set.
DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC B0018-Auxiliary (Secondary and Tertiary) Serial Data Bus Fault
TEST
