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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: 423 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.
Is there any rust/oxidization observed on Sensor Terminals.
Clean the Rust or
repair or replace
Go to Step 2.
2.
The error is SET if any one of the following errors are
detected.
1. Only starter relay1 is activated and relay2 is still in open
state.
2. When battery voltage is above certain voltage threshold
8000 volt.
3. When the VSensing feedback signal becomes high.
Establish continuity
by rectifying
harness
connections as per
the circuit
schematic.
Go to Step 3.
3.
Are there any pins damaged at EMS ECU Connector.
Replace the
connector or wiring
Harness.
Go to step 4.
4.
Are there any pins backed out from the EMS ECU
Connector.
Rectify/Replace
Connectors.
Go to Step 5.
5.
Is EMS pin K072, K055, K085 short circuited to
GND/Battery or
Open?
Repair the harness
as per the
schematic.
Go to Step 6.
6.
If fault still persists.
then replace sensor
and if fault still
persists then call
Hotline.
Follow the above
procedure again 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 also.
2. If error present, then rectify the errors.
3. Confirm that there is no error logged in EMS before handing over vehicle to customer.