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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: 426 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.
U1010 - 12: Key In Signal - Circuit Short to Battery
Overview:
ISO Code (DTC Code)
U1010 - 12
Customer Symptom
Vehicle RKE Lock will not operate.
Fault Effects (On Vehicle)
1. Vehicle RKE Lock will not operate.
2. Battery Drain
Lamp Status (If Any)
NA
Fault Detection Condition
This fault will be logged after the input switch test routine
execution. User has to operate the switch manually during
routine. If short to battery fault is detected for ignition power
mode input switch then this DTC code will be returned with
the Routine results.
Normal Operating Condition
There should not be any fault returned by routine.
Probable Trouble Area
1. BCM connector wired wrong
2. Cockpit wiring harness short to ground
3. Ignition switch failure
4. sensor damaged
Healing Condition
1. Ignition OFF
ON
2. Clear DTC Command
Component Details:
Key In input switch is part of Ignition switch and interfaced to the BCM. If the Key In input switch is activated and RKE
Lock functionality will not work. If user put the ignition switch to Key In power mode input position, RKE Lock functionality
will not work.
Key In input switch is active high.
Preliminary Checks:
1. Check Battery Voltage (9V-16V)
2. Check ECU pins for oxidation, bending & damage.
Trouble Shooting:-