Copyright © 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. PSCM DTC Troubleshooting Guide for Mando EPAS Version: 1.1 Date: 14/01/2019 Author: E&E Chassis - ERC Page63 U0423-82: Rx IPC1 (0x197) Signal alive (SpdCountSig) Count about Non ABS ISO Code U0423-82 Customer Symptom No warning lamp, No heavy steering Fault Effects (On Vehicle) Parial assistance at 80KPH Lamp Status (If Any) Warning lamp ON ; G/Driver ON ; Motor ON Fault Detection Condition When vehicle speed information is not updated as per the latest values. Rolling counter Incorrect(SpdCountSig) Normal Operating Condition 1. IPC ECU sends updated data in normal condition. 2. When DLC of IPC1(0x197) is matched (When DLC is equal to 8) 3. Rolling counter Correct(SpdCountSig) Probable Trouble Area IPC ECU Healing Condition When IPC sends the updated value Component Details: NA Preliminary Checks: NA Trouble Shooting: DTC’s confirmation: After rectification, ensure the following points using TML diagnostic tool before handing over to customer. 1. DTC should not be in current state.
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