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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: 686 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.
Check for any other faults presence related to ECU Internal
power supplies.
Follow rectification
process for the
faults, before
proceeding further
Go to Step 2
2.
Check for electrical continuity between ECU to AMF
connector as per circuit schematic
Go to Step 3
Establish continuity
by rectifying
harness
connections as per
the circuit
schematic
3.
Are there any pins damaged at EMS ECU Connector or
AMF Sensor connector?
Replace the
connector or wiring
harness
Go to step 4
4
Are there any pins backed out from the EMS ECU
Connector or AMF sensor connector?
Rectify/Replace
Connectors
Go to Step 5
5
Check inlet air circuit for clogging; wrong assembly/fitment
etc; Any issues found?
Clean the inlet air
circuit and remove
any clogging
Go to Step 6
6
Check whether the EMS ECU pin number K086 is short to
Ground
Rectify the wiring
harness.
Go to Step 7
7
Fault Still Persists?
Replace AMF / MAF
Sensor
*1
. If Fault
still persists then
Call Hot line.
Follow the steps
again for
reconfirmation
Note
*1
: In case of AMF Sensor Replacement. Below Routine to be executed
“Reset Lambda sensor - 4.2.2 ‘Exchange of Injectors, Rail Pressure Sensor and MAF Sensor’ (LSU1 $
02 05 XX
)
– Sub-function
02“.
DTC’s confirmation:
After rectification, Test Drive the vehicle for 2 KM and ensure that no DTC’s are logged in ECM.
Circuit Schematic: