TML Gen3 IVI DTC Troubleshooting guide Version: 0.4 Draft Date: 04-Aug-23 Author: Hemant Mitra Page: 463 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. Trouble Shooting:- Voltage fluctuates between 0V and 14V? Yes Disconnect IPC ECU power supply connector. Check voltage b/w Connector A, pin no. 5 and Connector A, Pin no. 6 & Connector A, pin 8) No Is DTC Present? Yes No Stop 1. Connect the TML Diagnostic Tool. 2. Turn the Ignition ON 3. Check the status of DTC’s (Memorized/Current) 4. Record the DTC & Clear 5. Turn Ignition OFF & ON 6. Verify If U3006 – 17 is present Replace wiring harness (Vehicle side) Stop Yes No Is voltage > 14.5v? Replace/ Recharge the battery Take corrective action to repair alternator circuit. No Yes Is DTC Present? Check the Alternator output voltage.
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