Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1 Date: 23/11/2022 Author: ERC Page 118 of 834 Copyright by TATA MOTORS Ltd. This document must not be used in any w ay, such as copying and redistributing to third parties, w ithout our consent P0115- 00- Engine Coolant Temperature Sensor 1 Circuit Overview: Code Cause Effect on Vehicle Fault Code: P0115-00 1. Global fault for coolant sensor – Any coolant sensor related fault will trigger this fault also. 2. Coolant temp sensor connector loose connection 3. Electrical wiring damage 4. ECU terminal loose connection 5. Coolant Sensor malfunctioning 1.MIL Lamp On 2.Cylinder balancing disabled 3. Radiator fan ON 4. AC may be disabled Lamp status: Check Engine Lamp off Malfunction Indicator Lamp on Checkpoints: 1. Check Battery Voltage at Ignition off (Nominal Range 11.5V~13V) 2. Check for any other coolant sensor related faults. If found, address it first. Trouble Shooting Steps: Sr. No. Steps Specifications Step 1 Check whether the coolant sensor connector is connected properly. Remove and connect again properly - Step 2 Check for continuity between coolant sensor connector pins 1, 2, and ECU pins A35, A4respectively. - Step 3 Check the ECU connector is connected properly - Step 4 Check for any damage or bend in ECU terminal pin - Step 5 Check the coolant sensor physically - Step 6 If the problem persists, replace the sensor -
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