Gravitas FATC Gen 3 DTC Troubleshooting Data Version: 1.0 Date: 15-July-2023 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. Author: ERC Page: 78 of 301 DTC’s confirmation:- After rectification, Rotate Fan Knob from control Panel and ensure the following points by referring diagnostics feedback parameters using TML diagnostic tool before handing over to customer. a) Physical check of Fan Speed change when requested. b) Read ECU parameter Blower diagnostic feedback 4A49, which should be requested values. Circuit Schematic Diagram:- “Refer the circuit schematics from the tool” Component Location & Image:- Connector Location: -HVAC kit Connector View & Information: - PIN Assignment 1 CtrlSig Control Signal PWM 2 DiagSig Diagnostic signal Analog 3 -MotSig Motor signal Analog 4 ACC Supply ACC Supply Power 5 Gnd Ground Gnd Inspection Method: - 1) If there is no continuity between the Blower control circuit & ECU connector then correct the wiring harness
RkJQdWJsaXNoZXIy MTIwNTUz