TIAGO TIGOR BSVI - SERVICE MANUAL - DTC 24-12-2021

TATA BSVI Gasoline Program – EMS ECU Bosch DTC Troubleshooting Service Manual Version: 1.2 Date: 18-12-2019 Prepared By: Sunita Mandlik Checked By: Yeshwant Jadhav Approved By: Satish Kumar Document Part No: 2921 02 xxx xxxx Page: 497 of 1498 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. P0336-1F: Crankshaft Position Sensor “A” Circuit Range/Performance – Circuit Intermittent Overview: ISO Code P0336-1F Customer Symptom Engine might get stalled, Vehicle start failure, If error occurs in Idle-vehicle will switch off If error occurs during driving-vehicle will run in limp home mode If error occurs before starting-vehicle will start & run in limp home Fault Effects (On Vehicle) Engine stalls & Doesn’t Start. Lamp Status (If Any) CE lamp ON after 1 drive cycle Fault Detection Condition This fault gets logged when the Crank shaft Sensor signal is implausible to the vehicle operating condition. Disturbance of crankshaft sensor due to loose contact, interferences, oscillations Normal Operating Condition Crank Shaft Sensor provided plausible signal to EMS ECU. Probable Trouble Area Wiring Harness Connections, Sensor, Metallic particles/Burr in Sensor tip or flywheel teeth, Air gap between Crank Sensor and Fly wheel, Physical damage to Flywheel Healing Condition Engine Running and after 1 drive cycles of fault rectification. Fault permanent deletion 1. Clear DTC Command form Scan tool 2. Stack Over Flow. 3. 40 warm up cycles. 4. ECU Flashing. 5. ECU Power-Fail Component Details: The Circuit decodes the signal given by an inductive based Sensor (Variable Reluctance). Intended target is a wheel uniformly cut with 60 teeth and 2 teeth removed. The Sensor output signal approximates a sine wave whose frequency is proportional to engine speed and amplitude is approximately proportional to engine speed. Active edge is generated from zero crossing point positive to negative transition. Preliminary Checks: 1. Loose/ Damaged Connections between Sensor and EMS ECU. 2. Check for back out of pins at both Sensor connector and ECU connector. 3. Check for damage of pins at both Sensor connector and ECU connector. 4. Check the continuity from Sensor connector pins to the ECU pins. 5. Physical damage to flywheel. 6. Improper Air Gap between Sensor and Flywheel.