162 / 5157
Nexon Gasoline – EMS ECU Bosch
DTC Troubleshooting Manual
Version: 0.1
Date: 26-08-2017
Prepared By: Sunu S Babu/Yogesh Jadhav
Checked By: Yeshwant Jadhav
Approved By: Satish Kumar
Document Part No: 2921 02 224 A1736
Page: 158 of 1203
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.
P0107-11: Manifold Pressure Sensor Circuit Low – Circuit Short to Ground
Overview:
ISO Code
P0107-11
Customer Symptom
No Apprehensive feeling in vehicle running condition
Fault Effects (On Vehicle)
Vehicle starts with rich Air Fuel Ratio, No altitude adaptation.
Calculated Secondary Charge (Based on Throttle angle and Engine speed )
will drive the engine.
Lamp Status (If Any)
MIL ON after 3 drive cycle
Fault Detection Condition
This fault gets logged if the TMAP Sensor Pressure signal is Short Circuited
to ground.
Normal Operating Condition
TMAP Sensor Pressure signal is plausible with respect to the Engine
operating condition.
Probable Trouble Area
Wiring Harness Connections, Inlet Air Circuit Clogging, Sensor.
Healing Condition
Ignition ON and after 3 Driving Cycles
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:
TMAPSensor 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.