Q501 4 Cylinder MT Application DTC Troubleshooting Data Version: 0.1 Date: 21-Sep-2018 Prepared By: Mithi Prasad, Sarang Kulkarni, Manish Gupta Checked By: Yogesh Jadhav Approved By: Satish Kumar P Page: 856 of 1052 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. connector or wiring harness 5 Are there any pins backed out from the EMS ECU Connector Rectify/Replace Connectors Go to Next Step 6 Is the ECM pin K037 short circuited to Ground / Battery. Rectify the wiring harness connections as per the schematic Go to Next Step 7 Check the L/R ratio of the Relay coil. Is it ~ 0.25 msec? Go to next step Call hot line to get assistance on whether the Low speed fan relay to be replaced or not. 8 Fault Persists. Call Hotline Repeat the above steps for reconfirmation DTC’s confirmation: After rectification, Test Drive the vehicle for 2 KM and ensure that no DTC’s are logged in ECM. Perform the IO / Actuator Test for Low Speed fan Relay. Test shall be successful. Circuit Schematic: Component Location & Image:- Check in the Engine Compartment fuse box for the Low Speed fan relay. Fuse Box Cover Image is shown below.
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