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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: 253 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.
Trouble Shooting:
Step Checks
IF YES
IF NO
1.
Check for any CAN bus related DTC’s
Rectify them by
Following their
rectification
Procedure
Go to Step 2
2.
Check for any Vehicle Speed sensor related faults in
Instrument Cluster ECU(Non-ABS vehicle) & in ABS
ECU(ABS variant)
Rectify them by
Following their
rectification
Procedure
Go to Step 3
3.
Check for any pin back out at CAN pin 18/19of EMS
connector or back out at speed sensor connector pin.
Rectify/Replace the
Connector
Go to Step 4
4.
Fault Still Persists?
Replace Vehicle
Speed Sensor. If
fault still persists
then replace Ecu
Repeat the
procedure for Fault
Confirmation
DTC’s confirmation (checks before handing over vehicle to customer):-
x
Visually check the speedometer gauge on instrument cluster and vehicle speed signal (with gear information)
status at diagnostic tool at different vehicle speed & at different gear conditions
x
Check the errors at Ignition ON, engine running @ Idle & Flyup with different vehicle speeds also
x
If error present, then rectify the errors. Confirm that there are no errors logged by EMS before handing over
vehicle to customer
Circuit Schematic Diagram: