DTC B335: Loss Of CCDIC Serial Data
WARNING: This page is about a different car, the 1989 Cadillac Allante. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Refer to TECHNICAL SERVICE BULLETIN
TSB T90-90 for information related to intermittent codes.
NOTE:
When all diagnosis and repairs are completed, clear codes and verify operation.
NOTE:
The following numbered steps refer to circled numbers on diagnostic chart. See Fig 1
. For circuit identification, see Figure
.
Code B335 will set if the ignition is on and the BCM loses data communication with the Combo Panel. Since a loss of data communication with the Combo Panel will result in a "System Problem" display, this code can only be recognized as a "History" code. During this event, The HVAC will divert to 75°F set temperature, front defrost air delivery and automatic blower control.
With a two-way, redundant communication ability built into this system, a double open in the data line must occur to set the fault. A single fault, however, in the Combo Panel power or ground would also cause this code to set.