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: 1270 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. P0106-21: Manifold Absolute Pressure Circuit Range/Performance – Signal Amplitude<Minimum Overview: ISO Code P0106-21 Customer Symptom MIL will be ON and Drivability will be affected Fault Effects (On Vehicle) 1. Starts very rich. 2. No apprehensive feeling in vehicle running condition. 3. No altitude adaptation. 4. damage to sensor/ECU is possible Lamp Status (If Any) MIL ON after 3 drive cycle Fault Detection Condition This fault gets logged if the TMAP Sensor Pressure signal is not valid with respect to Engine Operating Condition. Normal Operating Condition TMAP Sensor Pressure signal is valid with respect to the Engine operating condition Probable Trouble Area Wiring Harness Connections, Inlet Air Circuit Clogging, Faulty TMAP Sensor Healing Condition Engine Running and after 3 Driving Cycles Fault permanent deletion 1. Scan tool Service 14. 2. Stack Over Flow. 3. 40 warm up cycles. 4. ECU flashing 5. ECU Power-Fail Component Details: TMAP Sensor consists of a silicon chip mounted inside a reference chamber. On one side of the chip is the reference chamber and on the other side is the pressure to be measured. The electrical resistance of the chip varies with the variation of pressure. This change in resistance alters the voltage signal. ECM interprets the voltage signal as pressure and any change in voltage signal as change in pressure. The temperature Sensor element is a NTC resistor. Preliminary Checks: 1. Inlet Air Circuit Clogging. 2. Loose/ Damaged Connections between Sensor and EMS ECU. 3. Check for back out of pins at both Sensor connector and ECU connector. 4. Check for damage of pins at both Sensor connector and ECU connector. Fault Enable Condition:- Model-based intake manifold pressure diagnosis "B_fpsrpl" to be set enabled along with following conditions, Air Charge Calculated based on Actual TMAP Sensor value ( "rlfgdss_w") should exceed the calibrated maximum value of modeled air charge "rldkmax_w".