HARRIER BOOK 2

Vehicle Platform: Tiago,Tigor & Osprey

ECU Name: Hella Body Control Module (BCM)

DTC Troubleshooting Data

Version: 2.0

Date: 22-10-2018

Author: Parag K

Page: 129 of 737

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.

B222C – 12:

Low Beam Relay – Short to Battery

Overview:

ISO Code

B222C - 12

Customer Symptom

1. Low Beam always ON.

Fault Effects (On Vehicle)

Low beam always ON.

Lamp Status (If Any)

Always ON

Fault Detection Condition

This fault gets logged by BCM when Low Beam output is

shorted to battery or open circuit

Normal Operating Condition

If the IGN is ON / ACC

is ON and headlamps are active then

Low Beam shall turn ON immediately after pressing the Low

Beam switch.

Probable Trouble Area

6. BCM connector Fault

7. Front wiring harness circuit short to battery

8. Low Beam bulb blown /lamp damaged

9. BCM ECU fault

10. Low Beam mating connector fault

Healing Condition

3. Ignition OFF



4. Clear DTC Command

Component Details:

Low Beam are located at headlamp of vehicle If the IGN is ON or Accessory

is ON and headlamps is active then

Low Beam shall turn ON immediately after pressing the Low Beam switch.

Preliminary Checks:

3. Check Battery Voltage (9V-16V)

4. Check ECU pins for oxidation, bending & damage.

Trouble Shooting:-