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: 554 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. P0501-86: Vehicle Speed Sensor "A" Range/Performance : Vehicle speed received from CAN is wrong. Overview: DTC Description (User Friendly) Vehicle Speed Sensor "A" Range/Performance: Vehicle speed received from CAN is wrong. ECU Pin Number Customer Symptom MIL ON, CEL OFF Fault Effects (On Vehicle) - Lamp Status (If Any) MIL ON. MIL Turns Off as and when fault condition is not present / healed. Fault Detection Condition (Root cause) The vehicle speed delivered by CAN equals to MAXSINT16. Normal Operating Condition If vehicle speed received through CAN is correct. Probable Trouble Area Wiring harness connections between vehicle speed sensor and EMS ECU. Healing Condition Rectify the error Clear through diagnostic tool. Ignition OFF & ON Component Details: Vehicle speed sensor is used for reading the speed of a vehicle's wheel rotation. Preliminary Checks: 1. Check whether the customer voice / view about the issue is matching with the fault effects mentioned in above Table. If yes, go ahead with next steps. If not, check for other DTC’s presence. 2. Check whether other customers report similar complaints earlier. If yes, perform the preliminary checks with respect to earlier issue closure. 3. Check for Damage in EMS ECU connector / Vehicle speed sensor. 4. Check for any back out of pins at EMS ECU connector / Vehicle speed sensor. 5. Check for any damage of pins at EMS ECU connector / Vehicle speed sensor.
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