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Author: Balaji / Amar /
Nitin / Umapathi /
Deepak
Page: 127 of 138
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TATA MOTORS Ltd.
This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author.
U0402-81:- Invalid Data Received From TCM
Overview:-
ISO Code
U0402-81
Customer Symptom
Current gear display will be ‘F’
Fault Effects (On Vehicle)
Current gear display will be ‘F’
Lamp Status (If Any)
TCM Lamp ON
Fault Detection Condition
Relevant functional DTCs present in TCM
Normal Operating Condition
TCM ECU sends correct data in normal condition.
Probable Trouble Area
Incorrect data received from TCM.
Healing Condition
After rectifying relevant functional failures in the TCM
ECU
Trouble Shooting:-