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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: 864 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 Clutch Switch setting proper?
Go to step 2
Correct the setting
as per the clutch
switch TML
drawing
2.
Is there continuity exists between Top Travel Input (10%)
pin 3 and EMS ECU pin 118 && Top Travel Input (10%)
clutch switch pin 3 and Ground.
Go to step 3
Rectify the wiring
harness
connections as per
the schematic
3.
Is there continuity exists between Extended Travel Input
(90%) pin 2 and EMS ECU pin 119 && Extended Travel
Input (90%) pin 2 and Ground.
Go to step 4
Rectify the wiring
harness
connections as per
the schematic
4.
Check whether EMS ECU pins 118 / 119 shorted to battery
supply / Ground
Go to step 5
Rectify the wiring
harness
connections as per
the schematic
5
Are there any pins damaged at EMS ECU Connector
Replace the
connector or wiring
harness
Go to step 6
6
Are there any pins backed out from the EMS ECU
Connector
Rectify/Replace
Connectors
Go to Step 7
7
Is clutch switch connector damaged or pins got backed out Rectify/Replace
Connectors
Go to step 8
8
If fault still persists,
then replace clutch
switches and if fault
still persists then
replace EMS ECU.
Follow the above
procedure again for
reconfirmation
DTC’s confirmation:-
After rectification, ensure the following points by referring engine parameters using TML diagnostic tool before
handing over to customer.
Drive the vehicle in different gears till vehicle speed reaches 70 Kmph and then check whether the fault is logged or
not. If fault doesn’t get logged then confirm that fault gets rectified.