TML Gen3 IVI DTC Troubleshooting guide Version: 0.4 Draft Date: 04-Aug-23 Author: Hemant Mitra Page: 288 of 584 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. U133C-08: Mood lighting Led module - Bus Signal / Message Failures Overview: Trouble Shooting: - Below given flowcharts guides to troubleshoot the fault: ISO Code U133C-08 Customer Symptom Faulty LED module will not glow Fault Effects (On Vehicle) Faulty LED module will not glow Lamp Status (If Any) No Fault Detection Condition Faulty LED module will not glow Normal Operating Condition Mood lighting feature will be available. Probable Trouble Area 1. Auto addressing failure 2. LED module wiring harness connection issue Healing Condition 1. Run auto addressing service routine. 2. verify connection between LED modules 3. Replace LED module if fault persists.
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