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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: 172 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.
P0112-15: Intake Air Temperature Sensor Circuit Low – Circuit Short to Battery or Open Circuit
Overview:
ISO Code
P0112-15
Customer Symptom
No impact on Drivability.
Fault Effects (On Vehicle)
Default Intake Air Temperature of 20 degrees is taken for
Engine Running
Lamp Status (If Any)
MIL ON after 3 Drive Cycles
Fault Detection Condition
This fault gets logged if the TMAP Sensor Temperature signal
is Short Circuited to Battery or Open Circuited.
Normal Operating Condition
TMAP Sensor Temperature signal is plausible with respect to
the Engine operating condition.
Probable Trouble Area
Wiring Harness Connections, 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:
Boost pressure 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. 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.