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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: 78 of 737
Copyright ©
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.
Trouble Shooting:-
Voltage
fluctuates
between 0V and
14V?
A
Yes
Disconnect BCM ECU power supply
connector. Check voltage b/w pin 1& 2.
(Refer Connector View & Information)
No
Is DTC
Present?
Yes
No
Stop
1. Connect the TML Diagnostic Tool.
2. Turn the Ignition ON
3. Check the status of DTC’s (Memorized/Current)
4. Record the DTC & Clear
5. Turn Ignition OFF & ON.
6. Read ECU parameters 7007(Control Module Input Power “3”)
using diagnostic tool
Range: 9 to 16 V.
7. Verify If DTC
U100A – 16
is present
Replace wiring harness
(Vehicle side)
Check resistance between
vehicle ground and ground at
the power supply connector.
Resistance
< 1 Ω?
No
Yes