NEXON DIAGNOSTIC MANUAL

OSPREY- Application

DTC Troubleshooting Data

Version: 4.0

Date: 10-02-2017

Prepared by: Mithipati Prasad

Checked by: G S Raju / Senthilnathan S

Page: 96 of 654

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.

P0108: Atmospheric Pressure Sensor - Short Circuited To Battery

Overview:

DTC Description as per ISO standard

Manifold Absolute Pressure/Barometric Pressure Circuit High

ECU Pin Number

ECU Internal

Customer Symptom

Fault Effects (On Vehicle)

Probable loss of power and black smoke

Lamp Status (If Any)

Fault Detection Condition (Root cause)

This fault gets logged if the signal of the Atmospheric

pressure sensor mounted on the EMS ECU is short circuited

to battery

Normal Operating Condition

Diagnostic tool display the value of Atmospheric Pressure

Sensor at engine idle condition

Probable Trouble Area

Atmospheric Pressure Sensor

Related wiring Harness, connector or terminals

ECU

Healing Condition

Rectify the error

Clear through diagnostic tool

Ignition OFF & ON

Component Details:

Atmospheric Pressure Sensor is mounted on EMS ECU; it gives the Atmospheric Pressure signal to ECU internally. No

separate hardware pins assigned to Atmospheric Pressure signal in wiring harness. EMS uses the atmospheric pressure

information for correction of air fuel ratio at higher altitudes.

Preliminary Checks

Check whether the customer voice / view about the issue is matching with the fault effects mentioned above. If

yes, go ahead with next steps. If not, check for other DTC’s presence.

Check whether similar complaints are earlier reported. If yes, perform the preliminary checks with respect to

earlier issue closure.

Check whether the EMS ECU is getting power supply and GND. Rectify wiring Harness as

per the schematic if found faulty

Check whether the EMS ECU is getting power supply and GND. Rectify wiring Harness as per the schematic if

found faulty

Check whether the Main relay is faulty. Rectify/Replace if found main relay is faulty.

If fault still persists then Call Hot Line