NEXON 2.0 EV DTC Troubleshooting Document for VCU Version: 1.0 draft Date: 31-Jan-2022 Copyright © TATA MOTORS Ltd. This document must not be used in anyway, such as copying and redistributing to third parties, without the consent of author. 2. If DTC related to brake pedal sensor 1 is present? If DTC related to P300B (brake pedal sensor 1) is present? Check the corresponding DTC troubleshooting first, then Go to Step 4 Check if any other fault is present. 3. If DTC related to vacuum pressure sensor is present? If DTC related to P3014 (vacuum pressure sensor) is present? Check the corresponding DTC troubleshooting first, then Go to Step 4 Go to Step 4 4. Switch vehicle Ignition OFF. Remove the LV battery connector. Vehicle is in Ignition OFF mode? Go to step 5 Go to step 4 5. Check for the problem related to harness connecting accelerator pedal sensor Check if there is damage/short in harness/pin between VCU connector C776A- Pin 43, C776A- Pin 09 and accelerator pedal side LV connector C295 Pin 2, Pin 3. (Refer schematic for details) Problem is in connector/ harness. Action: Repair harness Go to Step 6 6. Check for the problem related to harness connecting brake pedal sensor Check if there is damage/short in harness/pin between VCU connector C776A- Pin 67, C776A- Pin 31 and brake pedal side LV connector C774 – Pin C and C774- Pin B (Refer schematic for details) Problem is in connector/ harness. Action: Repair harness Go to Step 7 7. Check for the problem related to harness connecting Vacuum pressure sensor Check if there is damage/short in harness/pin between VCU connector C776B- Pin 11, C776B- Pin 37 and vacuum pressure sensor LV connector C783 – Pin 3 and C783 – Pin 4 (Refer schematic for details) Problem is in connector/ harness. Action: Repair harness Problem in VCU
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