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: 826 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. If the Routine result is negative, then call hotline for confirmation to replace EGR valve. 2 Check for mechanical damage / Blockages in EGR Valve Remove the blockages. If found damaged then call hotline to confirm EGR valve replacement. Go to Next Step. 3 Check for inlet air circuit clogging Replace faulty Relay Go to next step 4 Check whether air filter is clogged Rectify / Remove the clogging Go to Next Step 5 Check whether any MAF sensor related faults are logged Rectify them by following their rectification procedure Go to Next Step 6 Check whether atmospheric pressure sensor faults are logged. Rectify them by following their rectification procedure Go to Next Step 7 Check the Electrical Continuity between the EGR Valve and EMS ECU. For pin details, refer schematic section below. Go to next step Rectify the wiring harness connections as per the circuit schematic. 8 Are there any pins damaged at EMS ECU Connector Replace the connector or wiring harness Go to Next Step 9 Are there any pins backed out from the EMS ECU Connector Rectify/Replace Connectors Go to Next Step 10 Check whether any of the EGR valve pins (A067, A088, A040, A079, A078) are short circuited to Battery / Ground. Rectify the wiring Harness Connections Go to Next Step. 11 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. Incase EGR valve is needed to be replaced, then open the Component Replacement Tab and execute below routines: “EGR high pressure offset reset and activation of the learning ($ 02 0F)” “EGR High Pressure DC Motor Test”
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