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OSPREY- Application
DTC Troubleshooting Data
Version: 4.0
Date: 10-02-2017
Prepared by: Mithipati Prasad
Checked by: G S Raju / Senthilnathan S
Page: 285 of 654
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.
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Check the connection of sensors powered by sensor supply Voltage 1. Follow sensor supply voltage1 check
/rectification process.
x
Check sensor connections for rust dirt etc; Follow rectification process of concerned sensor if faulty.
x
Check ECU; Replace ECU, if problem still persists.
x
Check with diagnostic tool if the sensor supply voltage lies in between 4.75 V to 5.35 V
Trouble Shooting:
Step
Checks
IF YES
IF NO
1.
Check whether the EMS ECU is receiving supply and
Ground
Go to step 2
Rectify wiring
harness
connections as
per schematic
2.
Check whether the battery is healthy
Go to step 3
Repair Battery
3
Check sensor connections for rust dirt etc
Go to step 4
Follow rectification
process of
concerned sensor
if faulty.
4
Check whether the EMS ecu pins 75, 37, 77 are short
circuited to Ground.
Go to step 5
Follow rectification
process of
concerned sensor
if faulty
5
Check with diagnostic tool if the sensor supply voltage
lies in between 4.75 V to 5.35 V
Go to step 6
Check battery
voltage also check
proper wiring
harness
6
If fault still persists
Call Hot Line
Repeat above
procedure for
reconfirmation
DTC’s confirmation (checks before handing over vehicle to customer):
1. Check the errors at Ignition ON, engine running @ Idle & Fly-up with different vehicle speeds as well