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TIAGO AMT Gasoline
DTC Troubleshooting Guide
Version: 2.0
Date: 06-06-2016
Author: Sathi/Anupama
Page: 345 of 424
Copyright ©
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.
117.
P0880- 03: TCU 5V power Supply Device Closed
Overview:
ISO Code
P0880- 02
Customer Symptom
Battery drain
Fault Effects (On Vehicle)
Battery drain
Lamp Status (If Any)
Transmission Fault Lamp ON
Fault Detection Condition
This fault gets detected after Ignition OFF if the TCU detects
that the TCU is still running after a timeout
Normal Operating Condition
TCU switches off after a powerdown timeout
Probable Trouble Area
TCU damage
Healing Condition
50ms after detection of valid heal condition
Component Details:
The Problem may occur due to an internal damage to TCU.
Preliminary Checks:
1) Battery voltage
2) Check for damage or back out of pins at TCU connectors.
3) Check correct fitment of ground cable connections on vehicle chassis (tightness, corrosion of mounting bolts etc.)
.
Trouble Shooting:-
Step Checks
IF YES
IF NO
1
At the first instance of the fault, clear the
DTC and run the vehicle in all gears for
about 10 kms, does the fault recur?
Go to Step 2
Release the vehicle
to the customer
after final drive test
2
Check Battery and Ignition supplies at pins
1,3and 5 respectively. Both are correct?
Go to Step 3
rectify harness
connections as per
the circuit
schematic
3
Is there any pin back
out/damage/rust/oxidation observed on
TCU Connector?
Clean or repair or replace connector Go to Step4
4
Fault Still Persists?
Replace TCU
Follow the steps
again for
reconfirmation
-
the following points by referring TCU parameters using TML diagnostic tool
before handing over to customer.
Drive the vehicle through all gears in both Automatic and Manual modes
Ensure no DTC is active and Transmission Fault Lamp is OFF.
Circuit Schematic Diagram:
Component Location & Image:-
Connector Location: -
Connector View & Information: -