HARRIER BOOK 2

Q5/X451 FATC

DTC Troubleshooting Data

Version: 1.0

Date: 16-Oct-2018

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: 37 of 202

B1F2E-13:- Air Distribution Motor Drive Line – Circuit Open;

ISO Code

B1F2E- 13

Customer Symptom

No air distribution (mode) control (manual or automatic)

Fault Effects (On Vehicle)

Motor movement is not possible

Lamp Status (If Any)

Motor To be Disabled

Fault Detection Condition

Mode Door Control Motor Drive Line -open

Normal Operating Condition

With the Mode motor drive line connected to the harness

and with Ignition ON, check the voltage between blue

connector pin no 5 & ground or 21 & ground of the

Connector. The voltage range should be in between 0 to 14

Probable Trouble Area

Either or both Motor drive lines is open circuited

(Can be detected only when motor movement is

requested)

Healing Condition

If there is no continuity between the Mode distribution

door Motor drive line & ECU connector then correct the

wiring harness

Component Details:

The Mode Door Actuator controls the direction of airflow. It selects which way air flows through the different ducts.

Preliminary Checks:

Switch On the IGN & perform the following check.

Connect the Diagnostics tool & check the DTC fault code

Read ECU parameter value

Target Position of Mode Door Flap

and

Air Distribution Mode Door flap Position

(Internal Value)

for actual and target position of Actuator