NAG1 Shifter - ESM (Column Shift)

U0121-LOST COMMUNICATION WITH ANTI-LOCK BRAKE MODULE - ESM (COLUMN SHIFT)

For a complete wiring diagramconsult Diagrams/Electrical

Theory of Operation


Some controllers communicate with other controllers over the CAN C BUS. The Electronic Shift Module (ESM) continuously monitors BUS activity and reads the messages it needs. The CAN C BUS is also used to communicate the MIL status to the Engine Controller.

For CAN BUS diagnostic procedures Refer to the No Response tests Communications - Verbose Codes .