HARRIER BOOK 2

Vehicle Platform: NEXON

ECU Name: ESCL

DTC Troubleshooting Data

Version: 1.4

Date: 09 Jan 2018

Author: Hitesh Kaneria

Page: 57 of 88

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.

Functional DTC

B1022–96: Steering lock unable to lock - component internal failure

Overview:

ISO Code (DTC Code)

B1022-96

Customer Symptom

ESCL unable to lock the steering wheel

Fault Effects (On Vehicle)

ESCL unable to lock the steering wheel

Lamp Status (If Any)

Fault Detection Condition

ESCL log this DTC when ESCL’s hardware Motor timeout during ESCL unlock

to lock process.

Normal Operating Condition

ESCL internal hardware motor shall not be timeout during ESCL locking.

Probable Trouble Area

ESCL internal hardware failure

Healing Condition

ESCL ECU replacement

Table 19: B1022-96 overview details

Component Details:

ESCL ECU is located on steering column behind steering wheel. ESCL ECU locks and unlocks the steering wheel based

on CAN messages received from PEPS, EMS, ABS and BCM.

Preliminary Checks:

1. Check Battery Voltage (9V-16V).

2. Check EMS, PEPS, BCM and ABS ECU’s signals are available on CAN bus by confirming that ABS, EMS, BCM

and PEPS related DTCs are not available in ESCL.

3. Check vehicle is getting lock /unlock by using UID.

Troubleshooting:

Start

Stop

1. Keep vehicle in static condition.

2. Turn ignition ON -> OFF

Replace ESCL ECU

Note

: Refer ESCL ECU replacement procedure doc to replace ESCL ECU.