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Q5/X451 FATC
DTC Troubleshooting Data
Version: 1.0
Date: 16-Oct-2018
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.
Author: ERC
Page: 132 of 202
Trouble Shooting:-
Is DTC
B1F39 -23 is
Present?
Check for Fresh Air / Recirc
Request Button functionality.
Check the Fresh Air / Recirc
shall be change by pressing
Fresh Air / Recirc button
Is Fresh Air / Recirc
button stucked?
Check and lubricate switch if still the Fresh
Air / Recirc button is stucked then replace
control panel.
Clear the DTC from the ECU memory.
Turn Ignition OFF & ON.
Check the Fresh Air / Recirc shall be
change by pressing Fresh Air / Recirc
button
Stop
Stop
YES
NO
YES
NO
Turn ON Ignition.
Connect the TML Diagnostic Tool.
Check the status of DTC’s (Memorized/Current)
Record the DTC & Clear DTC’s
Turn Ignition OFF & ON
Verify If DTC B1F39 – 23 is present