vehicle diagnostics

SEGULA Technologies

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.

SEGULA Technologies is a global engineering group, boosting the competitiveness of all major industrial sectors: automotive, aerospace, energy, rail, naval, life sciences, and telecoms. With a presence in more than 30 countries and 140 locations worldwide, the Group prioritizes close relationships with its clients, driven by the expertise of its 15,000 employees. As a leading engineering player putting innovation at the heart of its strategy, SEGULA Technologies manages large-scale projects, ranging from initial studies to industrialization and production.