B552

Chart:

Schematic:

DESCRIPTION
Code B552 does not indicate a fault but is a normal occurrence anytime the power to the Body Control Module (BCM) has been interrupted. Code B552 cannot be cleared from memory in the normal manner. Code B552 can only be cleared if it is not current. Under normal conditions, the code will become history by the following:
- Key in "LOCK."
- Wait 5 seconds.
- Key "ON" Re-enter Diagnostics.


This code should now be history, and can be cleared in the normal manner. The code will also set if the following conditions are met:
- Ignition "CRANK."
- No system voltage signal to BCM terminal 1C9.

The purpose of the crank circuit is to signal the BCM to shut off when cranking so that voltage variations that are normal during cranking do not affect the electronic devices.