4174 / 4910
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: 114 of 202
Trouble Shooting:-
Is DTC
B1F4D-23 is
Present?
Check for Air Distribution
Request functionality.
Check the Air Distribution
Request functionality by
pressing Air Distribution button
Is Air Distribution
button stucked?
Check and lubricate switch if still the Air
Distribution button is stucked then replace
control panel.
Clear the DTC from the ECU memory.
Turn Ignition OFF & ON.
Check the Mode changing by pressing
Air Distribution 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 B1F4D – 23 is present