TML Gen3 IVI DTC Troubleshooting guide Version: 0.4 Draft Date: 04-Aug-23 Author: Hemant Mitra Page: 84 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. B1C54-13: Channel 7 Speaker Assembly Output Power / Channel 7 Speaker Assembly Input Signal - circuit open Overview: Write up for the Related Sensor/Actuator or system:- Pre-Check Points: Perform Speaker tone test. Trouble Shooting:- Below given flowcharts guides to troubleshoot the fault: ISO Code B1C54-13 Customer Symptom No audible audio output from Channel 7 speaker. Fault Effects (On Vehicle) No audible audio output from Channel 7 speaker. Lamp Status (If Any) No Fault Detection Condition 1. No audible audio output from Channel 7 speaker. 2. This DTC gets logged when connection between Channel 7 speaker and Head Unit is open. Normal Operating Condition When any media/radio source is played from Head Unit, audio output is heard from car speakers. Probable Trouble Area • Wiring harness between HU and speakers • HU Connector and connector terminals • Speaker connector and its terminals • Intermittent connector and their terminal Healing Condition None
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