A typical Vehicle Diagnostics Engineer role at Renault Nissan Technology & Business Centre India (RNTBCI) focuses on developing and validating vehicle diagnostic functions compliant with automotive standards.

Job Title

Vehicle Diagnostics Engineer

Key Responsibilities

• Develop and maintain vehicle diagnostic specifications for ECUs.

• Define and validate diagnostic functions based on UDS (ISO 14229) and OBD-II requirements.

• Configure and test Diagnostic Trouble Codes (DTCs), Diagnostic Identifiers (DIDs), and Routine Control services.

• Analyze CAN/LIN communication and troubleshoot diagnostic issues.

• Work with software, calibration, validation, and ECU suppliers to resolve diagnostic defects.

• Perform diagnostic validation using tools such as CANoe, CANalyzer, or DDT2000.

• Support software integration, vehicle testing, and issue analysis.

• Ensure compliance with Renault-Nissan diagnostic standards and regulatory requirements.

• Create and maintain technical documentation, diagnostic specifications, and test reports.

• Participate in defect tracking and root cause analysis.

Required Skills

• Knowledge of automotive communication protocols:

  • CAN

  • LIN

  • Ethernet (preferred)

• Understanding of:

  • UDS (ISO 14229)

  • OBD-II

  • ISO 15765 (CAN Transport Protocol)

• Experience with tools such as:

  • Vector CANoe

  • CANalyzer

  • DDT2000

  • INCA (preferred)

• Understanding of ECU architecture and embedded systems.

• Familiarity with diagnostics over CAN and vehicle networks.

• Basic scripting knowledge (CAPL or Python) is an advantage.

• Strong debugging and analytical skills.

Preferred Qualifications

• B.E./B.Tech in Electronics, Electrical, Mechatronics, Automobile, or related disciplines.

• Typically 2–6 years of experience in automotive diagnostics, ECU validation, or embedded systems.

Common Interview Topics

• UDS services (0x10, 0x11, 0x19, 0x22, 0x27, 0x2E, 0x31, 0x34, 0x36, 0x37).

• DTC lifecycle and fault memory.

• OBD-II requirements and emission-related diagnostics.

• CAN protocol, CAN frames, arbitration, and message IDs.

• Diagnostic session control and security access.

• Flash programming and bootloader concepts.

• CAPL scripting basics.

• ECU communication and diagnostic troubleshooting.

• Difference between functional and physical addressing.

• Positive and negative response codes in UDS.

This role is suited to engineers with backgrounds in automotive electronics, ECU diagnostics, embedded systems, or vehicle network validation, rather than mechanical design.