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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: 285 of 855
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TATA MOTORS Ltd.
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B220A – 11: Front Fog Lamp Control Switch – Short to Ground
Overview:
ISO Code
B220A - 11
Customer Symptom
1. Front fog lamps always ON.
2. Facia Switch illumination for fog lamp always ON
Fault Effects (On Vehicle)
1. Front fog lamps always ON.
2. Facia Switch illumination for fog lamp always ON
3. Battery Drain
Lamp Status (If Any)
Always 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 front fog lamp 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. Front fog lamp switch input wire Short to ground
from cockpit wiring harness
3. Switch damaged or stuck
4. Facia Switch connector fault.
5. BCM ECU fault
Healing Condition
1. Ignition OFF
ON
2. Clear DTC Command
Component Details:
Front fog lamp switch is part of facia switch bank. If the IGN is ON and headlamps / position lamps are
ON and user presses the front fog lamp switch, front fog lamps will turn ON.
Preliminary Checks:
1. Check Battery Voltage (12.5 V & above)
2. Check ECU pins for oxidation, bending & damage.
Trouble Shooting:-