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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: 377 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.
Trouble Shooting:-
Step Checks
IF YES
IF NO
1
Is the Inlet Air Circuit Clogged
Rectify / Replace the
Air inlet Circuit
Go to Step 2
2
Are any of the faults of Boost pressure Sensor – P0237-11
or P0238-15 present
Rectify these faults
by following their
rectification
procedure
Go to step 3
3
Is there any rust/oxidization observed on Sensor Terminals Clean the Rust or
repair or replace
Go to Step 4
4.
Is there wiring harness electrical continuity between ECU
pins 208, 218,210 & Boost pressure Sensor connector pins
1, 4, 3.
Go to Step 5
Establish continuity
by rectifying
harness
connections as per
the Circuit
schematic
5
Are there any pins damaged at Sensor/EMS ECU
Connector
Replace the
connector or wiring
harness
Go to step 6
6
Are there any pins backed out from the Sensor/EMS ECU
Connector
Rectify/Replace
Connectors
Go to Step 7
7
Is Sensor Supply pin 210, Short Circuited to GND/Battery.
Repair the harness
as per the schematic Go to Step 8
8
Is Sensor Signal Pin 218, Short Circuited to GND/Battery.
Repair the harness
as per the schematic Go to Step 9
9
Is Sensor physically Damaged
Replace Sensor
Go to Step 10
10 Are any of the faults –P0243-13, P0245-11 and P0246-12?
Rectify these faults
by following their
rectification
procedure
Go to Step 11
11 Is the waste gate valve mechanically damaged
Rectify/Replace the
waste gate valve
Go to step 12
12 Are any Dump Valve related faults?
Rectify these faults
by following their
rectification
procedure
Go to step 13
13 Is the Turbo charger physically damaged
Rectify/Replace the
turbo charger
Go to step 14
13 Fault Still Persists?
Replace Sensor and
then Fault still
persists then
Replace EMS ECU
Follow the steps
again for
reconfirmation