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Q501 4 Cylinder MT Application
DTC Troubleshooting Data
Version: 0.1
Date: 21-Sep-2018
Prepared By: Mithi Prasad, Sarang Kulkarni, Manish Gupta
Checked By: Yogesh Jadhav
Approved By: Satish Kumar P
Page: 411 of 1052
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.
Are Relay Contacts weld / Stuck open?.
Replace the Relay
Go to Step 2
2.
Is there wiring harness electrical continuity between ECU
pin K55 & Starter relay coil pin X. Also Check continuity
between the Main Relay supply and the relay Coil pin X
and
Battery supply to Crank Inhibit relay contact pin X.
Go to Step 3
Establish continuity
by rectifying
harness
connections as per
the circuit
schematic
3. ECU pin K85 short to ground or open circuit?
Repair the harness
as per the
schematic
Go to step 4
4
Is relay getting Supply
Go to Step 5
Repair the harness
as per the
schematic
6
Fault Still Persists?
Replace relay and
then if Fault still
persists then call
hotline.
Follow the steps
again for
reconfirmation
DTC’s confirmation:
Press the clutch fully & then start the engine
Check the errors at Ignition ON, engine running @ Idle & Fly-up with different vehicle speeds as wellM.
Circuit Schematic:
EMS ECU