B1556
CIRCUIT DESCRIPTIONDTC B1556 is an internal Body Control Module (BCM) fault.
CONDITIONS FOR SETTING THE DTC
The BCM performs a data check on every EEPROM write. The BCM sets this fault if the data does not match after three consecutive attempts.
ACTION TAKEN WHEN THE DTC SETS
Stores a DTC B1556 in the BCM memory.
CONDITIONS FOR CLEARING THE DTC
^ The conditions for the fault are no longer present.
^ A history DTC will clear after 50 consecutive ignition cycles if the condition for the fault is no longer present.
DIAGNOSTIC AIDS
^ The DTC may be set as a history DTC with no affect on the control module.
^ If the DTC is retrieved as both a history DTC and a current DTC, the module must be replaced.
TEST
