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Vehicle Platform: OSPREY
ECU Name: Hella Body Control Module (BCM) DTC
Troubleshooting Data
Version: 1.4
Date: 15 May 2018
Author: Body CoC
Page: 326 of 855
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TATA MOTORS Ltd.
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B222D - 12: Low Beam Switch - Circuit short to Battery or Open Circuit
Overview:
ISO Code
B222D - 12
Customer Symptom
Low beam always OFF
Fault Effects (On Vehicle)
Low beam always OFF
Lamp Status (If Any)
Always OFF
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 battery or open
circuit 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 Short to battery or open circuit
from cockpit wiring harness
3. 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 & above)
2. Check ECU pins for oxidation, bending & damage.
Trouble Shooting:-