{Osprey CCM} DTC Troubleshooting Data Version: 2.0 Date: 28-Jul-17 Author: ERC Page: 62 of 244 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:- START CONNECT THE DIAGNOSTIC TOOL AND CHECK FOR DTC’S IS DTC PRESENT? CHECK DTC PRESENT IS PERMANENT OR HISTORY IS DTC PERMANENT? CLEAR DTC CHECK THE FATC HVAC SIDE CONNECTOR (BLUE) & BLOWER CONTROLMODULE CONNECTOR FOR PIN BACK OUT ARE PINS OK? IS CONTINUITY PRESENT? BLOWER MOTOR DRIVE LINE IS SHORT TO BATTERY IF ALL THE ABOVE CHECKS FAIL STOP FIX THE PROBLEM IS DTC PRESENT? NO YES CHECK FOR THE CONTINUITY BETWEEN PIN NO 26 OF FATC HVAC SIDE ECU CONNECTOR(BLUE) AND BATTERY PIN N0 15,16 OF VEHICLE SIDE ( GREEN) CONNECTOR HIGH RISK OF ECU DAMAGE RECTIFY THE WIRING HARNESS REPLACE ECU B1F2F12::BLOWER MOTOR DRIVE LINE SHORT TO BATTERY YES YES YES NO NO YES CRANK THE VEHICLE AND CHECK FOR DTC’S NO ECU IS FAULTY
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