Code P1573, Traction CNTRL Fault Loss Of Abs/TCS Serial Data: Notes

PCM uses the serial data line to communicate with various other components and systems within vehicle. If PCM does not receive data from Electronic Brake and Traction Control Module (EBTCM), PCM will store Code P1573 indicating loss of communication with ABS/TCS system. Code P1573 will set when the following conditions are present.

Code P1630 is not set.
PCM has detected communication error for .5 second.

When Code P1573 is set, PCM will not be able to communicate with EBTCM. This will cause EBTCM to set to set ABS DTC 76, disable traction control, and illuminate TRACTION OFF indicator. P1573 does not illuminate the Malfunction Indicator Light (MIL).

NOTE: Test numbers refer to numbers on diagnostic chart.

Checks if EBTCM is able to transmit data and ensures serial data circuit to EBTCM is not open.