Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1 Date: 23/11/2022 Author: ERC Page 176 of 834 Copyright by TATA MOTORS Ltd. This document must not be used in any w ay, such as copying and redistributing to third parties, w ithout our consent P0487- 00 - EGR Throttle Control Circuit "A" /Open Overview: Code Cause Effect on Vehicle Fault Code:P0487- 00 1. EGR drive wiring open circuit 2. EGR HB sensor loose connection 3. ECU connector loose connection 4. EGR drive malfunctioning 5. Wiring harness damage 6. ECU connector pin backout 7. ECU terminal pin bend or damage 1.MIL Lamp On 2. Engine Misfiring possible 3. Reduced vehicle performance 4. Disabled drive mode option Lamp status: Check Engine Lamp off Malfunction Indicator Lamp on Checkpoints: Check for nominal battery voltage at Ignition off (Nominal range – 11.5V to 12.8V) Trouble Shooting Steps: Sr. No. Steps Specifications Step 1 Check whether the EGR connector is connected properly. Remove and connect again properly - Step 2 Check whether the ECU connector is connected properly - Step 3 Check for any pin backout or damage in the ECU & EGR EVRV connector - Step 4 Check for continuity between sensor connector pins 1, 2, 4,5,6 and ECU pins A68, A73,A45,A89,A56 respectively. - Step 5 Check the ECU terminal pin for any damage or bend - Step 6 Check the EGR module physically for any damage - Step 7 If the problem persists, replace the EGR module - Verification condition: Drive the vehicle in city and highway condition
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