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{Osprey CCM}
DTC Troubleshooting Data
Version: 2.0
Date: 28-Jul-17
Author: ERC
Page: 88 of 244
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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.
Trouble Shooting:-
START
CONNECT THE DIAGNOSTIC TOOL
AND CHECK FOR DTC’S
IS DTC
PRESENT?
CHECK DTC PRESENT IS PERMANENT OR
HISTORY
IS DTC
PERMANENT?
CLEAR DTC
CHECK THE FATC HVAC SIDE CONNECTOR
(BLUE) & FRESH RECIRCULATION ACTUATOR
FOR PIN BACK OUT
ARE PINS
OK?
IS CONTINUITY
PRESENT?
FRESH/RECIRC MOTOR DRIVE LINE IS
SHORT TO BATTERY
IF ALL THE
ABOVE CHECKS
FAIL
STOP
FIX THE
PROBLEM
IS DTC
PRESENT?
NO
YES
CHECK FOR THE CONTINUITY BETWEEN PIN NO 12,PIN
NO 13 OF FATC HVAC SIDE ECU CONNECTOR(BLUE)
AND BATTERY PIN N0 15,16 OF VEHICLE SIDE (
GREEN) CONNECTOR
HIGH RISK OF
ECU DAMAGE
RECTIFY THE
WIRING
HARNESS
REPLACE ECU
B1F2C-
12::FRESH/
RECIRC DRIVE
LINE SHORT TO
BATTERY
YES
YES
YES
NO
NO
YES
NO
CRANK THE
VEHICLE AND
CHECK FOR
DTC’S
NO
ECU IS FAULTY