HARRIER BOOK 2

Q501 4 Cylinder MT Application

DTC Troubleshooting Data

Version: 0.1

Date: 21-Sep-2018

Prepared By: Mithi Prasad, Sarang Kulkarni, Manish Gupta

Checked By: Yogesh Jadhav

Approved By: Satish Kumar P

Page: 443 of 1052

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.

P1118-16: Throttle Actuator "A" Control Motor Current Range/Performance: Throttle valve actuator command

undervoltage

Overview:

DTC Description (User Friendly)

Throttle Actuator "A" Control Motor Current

Range/Performance: Throttle valve actuator command

undervoltage.

ECU Pin Number

A016, A098, A097,A008, A009

Customer Symptom

MIL ON, CEL OFF

Fault Effects (On Vehicle)

Lamp Status (If Any)

MIL ON. MIL Turns Off as and when fault condition is not

present / healed.

Fault Detection Condition (Root cause)

This DTC gets logged If Throttle valve actuator under voltage

error is present.

Normal Operating Condition

If Throttle valve actuator under voltage error is not present.

Probable Trouble Area

Wire harness connection between TVA actuator and EMS

ECU.

Healing Condition

Rectify the error Clear through diagnostic tool.

Ignition OFF & ON

Component Details:

Throttle valve is connected to accelerator pedal. Throttle position sensor measures current position of throttle valve,

based on this ems generates signal to the TVA Actuator. Signal generation for the actuator is based on TVA position

sensor signal value.

Preliminary Checks:

1. Check whether the customer voice / view about the issue is matching with the fault effects mentioned in above

Table. If yes, go ahead with next steps. If not, check for other DTC’s presence.

2. Check whether other customers report similar complaints earlier. If yes, perform the preliminary checks with

respect to earlier issue closure.

3. Check for Damage in EMS ECU connector / TVA Actuator and TVA position sensor.

4. Check for any back out of pins at EMS ECU connector / TVA Actuator and TVA position sensor.

5. Check for any damage of pins at EMS ECU connector / TVA Actuator and TVA position sensor.