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: 77 of 301 Trouble Shooting:- START CONNECTTHEDIAGNOSTICTOOL ANDCHECKFORDTC’S ISDTC PRESENT? CHECKDTCPRESENTISPERMANENTOR HISTORY ISDTC PERMANENT? CLEARDTC CHECKTHEFATCHVACSIDECONNECTOR ( BLUE)&BLOWERCONTROLMODULE CONNECTORFORPINBACKOUT AREPINS OK? ISCONTINUITY PRESENT? BLOWERDIAGNOSTICLINEIS SHORTTOBATTERY OR OPENOPEN IFALLTHE ABOVECHECKS FAIL STOP FIXTHE PROBLEM ISDTC PRESENT? NO YES CHECKFORTHECONTINUITYBETWEENPINNO8OF FATCHVACSIDEECUCONNECTOR(BLUE)AND GROUNDPINN015OR16OFVEHICLESIDE(GREEN) CONNECTOR HIGHRISKOF ECUDAMAGE RECTIFYTHE WIRING HARNESS REPLACEECU B1F2F- 12:: BLOWER MOTORDRIVE LINESHORTTO GROUND YES YES YES NO NO YES CRANKTHE VEHICLEAND CHECKFOR DTC’S NO ECUISFAULTY
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