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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: 283 of 737
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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.
B222D - 11: Low Beam Switch - Circuit Short to Ground
Overview:
ISO Code (DTC Code)
B222D - 11
Customer Symptom
Low beam always ON
Fault Effects (On Vehicle)
1. Low beam always ON
2. Battery Drain
Lamp Status (If Any)
Continuous ON
Fault Detection Condition
This fault will be logged after the input switch test routine
execution. User has to operate the switch manually during
routine. If short to ground fault is detected for low beam
switch then this DTC code will be returned with the Routine
results.
Normal Operating Condition
There should not be any fault returned by routine
Probable Trouble Area
1. BCM connector Fault
2. Low beam switch input short to ground from Cockpit
wiring harness
3. Low beam switch damaged or stuck
4. Combi switch connector fault.
5. BCM ECU fault
Healing Condition
1. Ignition OFF
ON
2. Clear DTC Command
Component Details:
Low beam switch is part of combination stalk switch and interfaced to the BCM. If the IGN is on and headlamps
are ON and if the combi switch is at low beam position then low beams will turn ON.
Preliminary Checks:
1. Check Battery Voltage (12.5 V and above)
2. Check ECU pins for oxidation, bending & damage.
Trouble Shooting:-