NEXON 3.0 EV DTC Troubleshooting Document for VCU Version: 2.0 Date: 22-Sep-2023 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. 9. Remove E-drive side LV connectors Check for continuity between C446A-6 and C446A-7 of E-drive (on E drive side LV connector) No problem in HVIL wiring of Edrive Go to Step 10 E drive inside HVIL is broken, internal wiring issue Action: Check if E drive top cover is open Still problem persists replace E drive 10. Remove E-drive side LV connectors On E-drive (on E drive side LV connector)check continuity of pin C446A-6 to chassis ground if the VECU parameter Vehicle HVIL Sense PWM duty cycle value is 0 or check continuity of pin C446A-6 to battery supply if the VECU parameter Vehicle HVIL Sense PWM duty cycle value is 100 Replace the E drive LV connector Go to step 11 Go to step 16 11. Remove E-drive side and AC compressor side LV connectors Check if there is continuity between C446A-7 and C447B-5 of these connectors No problem in the wiring between the E-drive connector and AC compressor connector. Go to Step 12 Problem is AC compressor to Edrive wiring harness Action: Change AC compressor to E-drive wiring harness
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