DTC 72 - EBTCM Serial Data Link Fault: Notes

Fig 1: EBTCM Serial Data Link System Schematic

Courtesy of GENERAL MOTORS CORP.

DTC 72 will set and TRACTION CONTROL indicator light will turn on if EBTCM does not receive a valid serial data link message within 5.6 seconds due to errors in transmission.

NOTE: Test number refers to number on diagnostic chart.

Fig 2: DTC 72 Diagnostic Flow Chart

Courtesy of GENERAL MOTORS CORP.

Checks to see if Tech 1 can communicate with EBTCM. A/C control panel may also be used to communicate with EBTCM.