HARRIER BOOK 2

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: 333 of 737

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.

B1308 - 12: Passenger Door Ajar Switch - Circuit short to Battery or Open Circuit

Overview:

ISO Code

B1308 - 12

Customer Symptom

1. Interior Roof lamp in Auto mode selection doesn’t

operate when Passenger door is opened.

2. The IC shows Passenger Door as closed status, even

if the Passenger door is opened as presumed by the

customer.

3. The Mis-lock sound does not occurs on RKE lock

command.

4. The vehicle will get lock on RKE lock command.

Fault Effects (On Vehicle)

1. Interior Roof lamp in Auto mode selection does not

operate when Passenger door is opened.

Lamp Status (If Any)

1. Roof lamp in Auto mode selection is OFF.

2. IC shows Passenger Door closed status always

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 or open circuit fault is detected for

Passenger Door Ajar 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 Fault

2. Left side wiring harness Short to battery or open

circuit

3. Passenger Door Ajar Switch is damaged or stuck or

faulty

4. BCM ECU fault

Healing Condition

1. Ignition OFF



2. Clear DTC Command

Component Details:

Passenger Door Switch, BCM connector

Functionality:

If the Passenger Door Switch is short to Battery or Open Circuit, then the Passenger door state is in closed state.

If the Passenger door is closed, then BCM shall receive the feedback of Passenger door as closed status.

Preliminary Checks:

1. Check Battery Voltage (12.5 V & above)

2. Check ECU pins for oxidation, bending & damage.

Trouble Shooting: