TIAGO

TIAGO AMT Gasoline

DTC Troubleshooting Guide

Version: 2.0

Date: 06-06-2016

Author: Sathi/Anupama

Page: 402 of 424

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.

137.

P -07 Variant code procedure not completed

Overview:

ISO Code

P1986-07

Customer Symptom

Transmission fault lamp is ON

Vehicle not cranking

Fault Effects (On Vehicle)

Vehicle cranking is disabled

Lamp Status (If Any)

Transmission fault lamp is ON

Fault Detection Condition

This fault gets detected after Ignition On if TCU detects that

the Variant Coding service procedure has not been done or

not successfully completed

Normal Operating Condition

Variant Coding Procedure is successfully completed at End of

line or after service part replacements (refers service manual)

that require such procedure.

Probable Trouble Area

Wrong execution conditions/Wiring Harness Connections /

TCU

Healing Condition

Immediately after detection of valid Variant Coding procedure

Completion.

Trouble Shooting:-