Vehicle Platform: All ECU Name: Telematics Control Unit (TCU) DTC Troubleshooting Data Version: 1.12 Date: 02-06-2022 Author: TCM COC Page: 12 of 150 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. 20 MC_DIG_PWM Frequency input 21 No Connection No Connection 22 MC_Wake_OP5 Digital Output 5 (HS) (Wake input for BCM) 23 MC_CSU_OP4 Digital Output 4 (HS) (RED LED Output for ECALL) 24 IGN_KL15 Ignition 25 MC_MIC_OUT_P MIC output positive 26 MC_MIC_OUT_N MIC output negative 27 uC_DIG_I/P4 Digital input 4 (Horn Input - Active low) 28 MC_ANG_I/P1 Analog input 1 (ECALL Diagnostics input) 29 MC_ANG_I/P2 Analog input 2 (TML to provide Specification) 30 RS485_D+ RS485 positive 31 RS485_D- RS485 negative 32 uC_DIG_I/P1 Digital input 1 33 MC_BCALL Breakdown call (Input for BCALL and ICALL switch) 34 MC_DIG_OP1 Telmute Output 35 MC_SOS_OP6 Digital output 6 (HS) (SOS LED drive) 36 Wake_I/P Digital input (Input wake up from VCU ) -Only for EVs
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