Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1 Date: 23/11/2022 Author: ERC Page 138 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 Checkpoints: Check sensor Voltage (nominal range 11.5V ~ 12.8V) Check for presence of any other faults like AMF sensor related faults etc. If present, address it first. Trouble Shooting Steps: Sr. No. Steps Specifications Step 1 Check whether the DP sensor connector is connected properly. Remove and connect again properly - Step 2 Check for continuity between sensor connector pins 1, 3, 2 and ECU pins A57, A49, A45 respectively. - Step 3 Check whether the ECU connector is connected properly - Step 4 Check the ECU terminal pin for any damage or bend - Step 5 Check whether the DP sensor tubes are connected properly without any damage or leakage - Step 6 Check for black smoke in tailpipe during free acceleration and take off - Step 7 If black smoke seen, Check the LNT+DPF physically for any damage - Step 8 In case of damage, replace the LNT+DPF - Associated Parameters: Parameter Label Description DID Monitoring DPF differential pressure Delta pressure across DPF FE17 “DPF differential pressure” should be greater than or equal to “DPF differential pressure when clean” when engine is running. DPF differential pressure when clean Delta pressure calculated by model for a clean DPF FE1F Verification condition: Drive the vehicle in highway in engine warmed up condition - accelerate the vehicle from 60kmph to 100kmph. Rise the engine speed above 4000 rpm in Neutral gear. Component Description: Diesel particulate filters capture particle emissions through a combination of filtration mechanisms, such as diffusional deposition, inertial deposition, or flow-line interception. The collected particulates would eventually
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