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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: 59 of 737
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TATA MOTORS Ltd.
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P0605 - 00:- Internal Control Module Read Only Memory (ROM) Error
Overview:
ISO Code
P0605 - 00
Customer Symptom
BCM will probably not function or will function intermittently or
partially
Fault Effects (On Vehicle)
N/A
Lamp Status (If Any)
None
Fault Detection Condition
Fault logged in the event of an error in the code flash memory
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
BCM internal damage
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.