U2000

DTC U2000 Invalid BFC Transmitted SPI Data:

CIRCUIT DESCRIPTION
This code (both current and history) is stored in the body control module (BCM). This code indicates that the instrument cluster has sensed a loss of the serial peripheral interface (SPI) data from the BCM.

CONDITIONS FOR SETTING THE DTC
All of the following conditions must be met:
^ Ignition 0 is active.
^ The serial data transmitted from the BCM to the instrument panel cluster (IPC) is incorrect for 12 seconds.

ACTION TAKEN WHEN THE DTC SETS
^ Stores DTC U2000 in the BCM memory
^ The fuel gauge is at zero.
^ The temperature gauge is at zero.
^ The THEFT SYSTEM, ABS, and SERVICE VEHICLE SOON indicators illuminate.

CONDITIONS FOR CLEARING THE DTC
^ The BCM goes to sleep and reinitializes with the malfunction cleared.
^ All the BCM history codes will be cleared after 100 ignition cycles (from OFF to RUN) with no current codes active during the 100 ignition cycles.
^ Use the scan tool.

DIAGNOSTIC AIDS
^ Diagnose DTC U2001 BEFORE diagnosing DTC U2000.
^ With the ignition switch in the ON position, test for voltage transmissions on the SPI data line.
^ If the DTC is a history DTC, the problem may be intermittent. Perform the above tests while wiggling the wiring and connectors. This may often cause the malfunction to appear.