Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1 Date: 23/11/2022 Author: ERC Page 149 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 Step 5 Check for intake air path leakage. Arrest it, if leaking - Step 6 Check cleanliness of DP sensor hoses. Clean it, if any foreign particles are present - Step 7 Do Service regen of DPF - DP lamp should go off and tool should result positive in end of regen Follow DPF regeneration procedure mentioned in service manual. Step 8 Check for visible black smoke in tail pipe during free acceleration. If visible black smoke is seen, DPF brick might have damaged or moved - Associated Parameters: Parameter Label Description DID Monitoring Relative soot accumulation based on diff pressure Soot load inside DPF calculated using DP sensor FE35 Reads above 100% to trigger this fault Verification condition: Drive the vehicle in city and highway in engine warmed up condition for 20 mins. Circuit Description: Diesel particulate filters capture particle emissions through a combination of filtration mechanisms. The collected particulates would eventually cause excessively high exhaust gas pressure drop in the filter, which would negatively affect the engine operation. Therefore, diesel particulate filter systems must provide a way of removing particulates from the filter to restore its soot collection capacity. This removal of particulates, known as the filter regeneration, can be performed either continuously, during regular operation of the filter, or periodically, after a pre-determined quantity of soot has been accumulated. To ensure that particulates are oxidized at a enough rate, the filter must operate at a sufficient temperature. Circuit Schematic Diagram:
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