TX6A Automatic Transmission System

TX6A AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSMISSION SYSTEM: U0073, U0401, U0416, U0422, U0423; Control Module Communication Bus OFF; 2013 MY FR-S [03/2012 -]
U0073 - Control Module Communication Bus OFF
U0401 - Invalid Data Received from ECM/PCM "A"
U0416 - Invalid Data Received from Vehicle Dynamics Control Module
U0422 - Invalid Data Received from Body Control Module
U0423 - Invalid Data Received from Instrument Panel Cluster Control Module

DESCRIPTION

HINT
* Problems on the CAN bus (communication line) can be detected from the DLC3 connector (Except when the DLC3 branch line is open).
* By using the Techstream, it is possible to check CAN communication DTC.
* The DLC3 is connected to the CAN communication line, but the CAN communication is unable to detect problems on the DLC3 branch line.





MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS

U0073: CAN Bus Off

*





U0401: TCM Communication Counter

*





U0416: VSC Communication Counter

*





TYPICAL MALFUNCTION THRESHOLDS

U0073: CAN Bus Off

*





U0401: TCM Communication Counter

*





U0416: VSC Communication Counter

*





INSPECTION PROCEDURE

NOTICE:
Perform the universal trip to clear permanent DTCs Reading and Clearing Diagnostic Trouble Codes.

PROCEDURE

1. CHECK DTC OUTPUT

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON and push the Techstream main switch ON.

(c) Read the DTCs using the Techstream Reading and Clearing Diagnostic Trouble Codes.

NEXT -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting