Gravitas FATC Gen 3 DTC Troubleshooting Data Version: 1.0 Date: 15-July-2023 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. Author: ERC Page: 29 of 301 C1 ACTUATOR Amp no 01355082-1 1 PotentiometerGnd Potentiometer Ground with FB- Gnd 2 PotentiometerFbSig Potentiometer feedback signal Analog 3 PotentiometerSpply Potentiometer Supply with FB- Power 4 NC NC NC 5 Mot + Motor signal is + in CW and Motor signal is - in CCW Digital 6 Mot - Motor signal is - in CW and Motor signal is + in CCW Digital Inspection Method: - 1) If there is no continuity between the Driver side Air Temperature Motor Drive Line & ECU connector then correct the wiring harness B1F56-11:- Co-Driver Air Temperature Motor Drive Line - Circuit Short to Ground; ISO Code B1F56-11 Customer Symptom No air temperature control (manual or automatic) Fault Effects (On Vehicle) If polarity of motor lines is affected by fault, motor will move to either end stop Lamp Status (If Any) NA Fault Detection Condition Co-Driver Temperature Door Control Motor Drive Line - Circuit Short to Ground fault is logged Normal Operating Condition Co-Driver Air Temperature Motor Drive Line is Functional and check the voltage between blue connector pin no 4& ground and 20& ground of the Connector. The voltage range should be in between 0 to 14 V. Probable Trouble Area Co-Driver Air Temperature Motor Drive Line is shorted to ground Healing Condition NA
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