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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: 109 of 855
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TATA MOTORS Ltd.
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U100A - 17:- Control Module Input Power 3 - circuit voltage above threshold
Overview:
ISO Code
U100A - 17
Customer Symptom
BCM will probably not function or will function
intermittently or partially
Fault Effects (On Vehicle)
Cannot determine scope without knowledge of power
line applicability
Lamp Status (If Any)
None
Fault Detection Condition
If Battery(supply) voltage greater than 16V
Alternator voltage o/p is greater than 14.5V.
Normal Operating Condition
Normal operating range:
ECU will be awake from 6V to 16 V.
Full assistance is b/w 11.5 to 16 volts.
Reduced assistance is b/w 9 to 11.5 V
Probable Trouble Area
Vehicle electrical fault
Healing Condition
N/A
Component Details:
N/A
Preliminary Checks:
1. Voltage at the battery terminals should be greater than 11.5V.
2. BCM power supply connector should have greater than 11.5V for full assistance.
3. Check battery cable and BCM connector terminals for damage.
4. Check BCM ECU for pin bend/damage.
5. Alternator output voltage should be between 13.5 V to 14.5 V in engine running condition.