Gravitas FATC Gen 3 DTC Troubleshooting Data Version: 1.0 Date: 15-July-2023 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. Author: ERC Page: 297 of 301 LimpHome Effect 1. CCM shall bypass the Logic of AQI Value based Actuator Control (Blower and Air Inlet) and follow the Existing AUTO logic(CCM) 2. CCM shall communicate 'Error'/'Implausible' state to Head Unit. 3. Dust Sensor Logic shall be non-functional until the sensor is replaced (New sensor should show P_SensorChange == 0) with Functioning Sensor. Probable causes Permanent Sensor Failure Investigative/Rectification/Repair actions Sensor Replacement Fault Subgroup ISO Defined Group Local Snapshot 7001, 7002, 4B0B Fault Deletion Service 14 Stack Overflow Customer Symptom Use will see '::' in case of this failure( DASH DASH) SDD Symptom N/A Fault Effects - Component Feature shuts OFF Fault Effects - Sub-system HU, FATC , Dust Sensor Fault Effects - System N/A Fault Effects - Network N/A Fault Effects - Vehicle Feature shuts OFF Trouble Shooting:- This DTC will Shut OFF the operation off Sensor till fault present. Once the sensor recover from fault operation of Dust sensor Resume. If Not Recovered from the fault then Dust sensor needs to be replaced. DTC’s confirmation: - After rectification, ensure the following points using TML diagnostic tool before handing over to customer. a) DTC should not be present in ECU memory. Circuit Schematic Diagram:-N.A Component Location & Image: - N.A Connector Location: N.A Connector View & Information: -N.A Inspection Method: - N.A U1331-08:- Lost Communication with Dust Sensor – Bus Signal/Message Failure
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