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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: 52 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.
Generic DTCs
U3000 - 08:- Control Module - Bus Signal / Message Failure
Overview:
ISO Code
U3000 - 08
Customer Symptom
BCM will not operate
Fault Effects (On Vehicle)
Cannot determine scope without CAN message list
Lamp Status (If Any)
None
Fault Detection Condition
BCM monitors if BCM transmits all CAN frames correctly
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
CAN transceiver lock up
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.