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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: 176 of 855
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TATA MOTORS Ltd.
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B221F – 11: Left Front Fog Lamp - Circuit Short to Ground
Overview:
ISO Code
B221F - 11
Customer Symptom
1. Left Front Fog Lamps always OFF.
2. Facia Switch illumination for front fog lamp
always OFF
Fault Effects (On Vehicle)
1. Left Front Fog Lamps always OFF.
2. Facia Switch illumination for left fog lamp always
OFF
Lamp Status (If Any)
Always OFF
Fault Detection Condition
BCM log this fault when left front fog lamp output is
short to ground.
Normal Operating Condition
If the IGN is ON and headlamps / position lamps are ON
then front fog lamps shall turn ON immediately after
pressing the front fog lamp switch.
Probable Trouble Area
1. BCM connector Fault
2. Left front fog lamp output wire Short to ground
3. Lamp damaged
4. BCM ECU fault
5. Left front fog lamp mating connector fault
Healing Condition
1. Ignition OFF
ON
2. Clear DTC Command
Component Details:
Left front fog lamps are located at left front side of vehicle. If the IGN is ON and headlamps / position
lamps are ON and user presses the front fog lamp switch then 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:-