Diagnose, remove, replace and recalibrate motor vehicle Advanced Driver Assistance System components

Business Sectors (Suites): Automotive Glazing,Maintenance and Repair - Light Vehicle
Developed by: IMI
Approved on: 30 Mar 2020


This standard is about identifying and rectifying faults occurring in Advanced Driver Assistance Systems (ADAS) by carrying out diagnostic activities and then removing, replacing and recalibrating sensors. ADAS includes systems for driver safety, pedestrian safety, motion/stability control and collision avoidance systems.

Performance criteria

You must be able to:

P1 use appropriate personal and vehicle protective equipment when carrying out testing, diagnosis and rectification activities
P2 support the identification of Advanced Driver Assistance System faults, by reviewing vehicle:

P2.1 technical data
P2.2 diagnostic test procedures
P3 confirm and record presence and type of ADAS systems and sensors
P4 follow up-to-date and relevant industry codes of practice at all times
P5 prepare and check the required testing and diagnostic equipment following manufacturer’s instructions prior to use
P6 use all tools and equipment required for your diagnostic and rectification activities, correctly and safely throughout 
P7 use testing techniques which are relevant to the symptoms presented and ADAS system type
P8 collect diagnostic information in a logical and systematic way to enable an accurate diagnosis of Advanced Driver Assistance System faults
P9 identify and record any system deviation from acceptable limits
P10 make cost effective, accurate recommendations for rectification based on your analysis of the diagnostic information gained
P11 carry out all diagnostic and rectification activities following:

P11.1 manufacturer’s instructions
P11.2 recognised researched replacement methods
P11.3 health, safety and environmental requirements
P12 work in a way that minimises the risk of:

P12.1 damage to other vehicle systems
P12.2 damage to other components and units
P12.3 contact with leakages
P12.4 contact with hazardous substances
P13 ensure the calibration environment Is as identified by the manufacturer’s instructions 
P14 ensure all replacement components and parts in the proximity of sensors conform to the vehicle manufacturer’s specification and any legal requirements
P15 recalibrate Advanced Driver Assistance System sensors correctly to ensure that they operate to meet vehicle system requirements and function to the vehicle manufacturer’s specified tolerances 
P16 record the recalibration has been successfully completed and meets vehicle manufacturer’s specified tolerances
P17 ensure your records are accurate, complete and passed to the relevant person(s) within the agreed timescale and in the format required
P18 complete all diagnostic and rectification activities within the agreed timescale
P19 report any anticipated delays in completion to the relevant person(s) promptly

Knowledge and Understanding

You need to know and understand:

K1 the current health and safety legislation and workplace procedures relevant to workshop practices and personal and vehicle protection when diagnosing, removing, replacing and recalibrating Advanced Driver Assistance System components
K2 legal requirements relating to the **Advanced Driver Assistance Systems** and components
K3 your workplace procedures for:

K3.1 recording fault location and correction activities
K3.2 reporting the results of tests
K3.3 completing and storing documentation relating to ADAS verifiable calibration
K3.4 the referral of problems
K3.5 reporting delays to the completion of work
K3.6 the calibration environment as identified by the manufacturer’s instructions 
K4 the importance of working to recognised diagnostic procedures and processes and obtaining the correct information for diagnostic activities to proceed
K5 types of ADAS diagnostic equipment
K6 the importance of documenting diagnostic and rectification information
K7 the importance of working to agreed timescales and keeping others informed of progress
K8 the importance of customer interaction relating to which systems can/can’t be calibrated
K9 the relationship between time, costs and productivity
K10 the importance of reporting anticipated delays to the relevant person(s) promptly
K11 types of ADAS sensors and their function 
K12 identifying the types of vehicle calibration *
K13 features of *ADAS system operation 
K14 electrical and electronic principles, including Ohms Law, voltage, power, current (AC/DC) resistance, magnetism, electromagnetism and electromagnetic induction, digital and fibre optics principles, radio waves, time of flight and doppler shifts, electrical symbols, units and terms, electrical safety procedures
K15 how electrical and electronic units and components are constructed, dismantled and reassembled
K16 how electrical and electronic units and components operate, including electrical component function, electrical inputs, outputs, voltage/current variation and patterns
K17 the interaction between electrical, electronic and mechanical components within the systems defined
K18 how electrical systems interlink and interact, including multiplexing
K19 how to prepare and check the accuracy of diagnostic testing equipment 
K20 how to use electrical and electronic testing equipment to correctly and safely diagnose ADAS faults
K21 the types and causes of Advanced Driver Assistance System failures
K22 the circumstances which will necessitate replacement and recalibration of Advanced Driver Assistance System components and other possible courses of action
K23 how to find, interpret and use sources of information on Advanced Driver Assistance System operating specifications, diagnostic test procedures, removal, replacement and recalibration procedures and legal requirements
K24 how to carry out systematic diagnostic testing of Advanced Driver Assistance System components using electrical and electronic testing techniques
K25 how to select the most appropriate diagnostic testing method for the symptoms presented
K26 how to interpret test results and vehicle data in order to identify the location and cause of Advanced Driver Assistance System faults
K27 how to remove, replace and recalibrate Advanced Driver Assistance System components and vehicle components in the proximity of *sensors  *
K28 how to make cost effective recommendations for rectification
K29 the need to continually keep up to date with emerging ADAS system technology
K30 the legal requirements of dynamic calibration activity on the road
K31 the risk and potential legal implications of returning an uncalibrated vehicle to the customer
K32 the value of providing the customer with evidence of successful calibration
K33 the industry agreed autonomous vehicle capability levels


1. Faults occurring in the following Advanced Driver Assistance Systems:

a. Driver safety 
b. Pedestrian Safety
c. Motion/stability control
d. Collision Avoidance Systems

2. Testing and diagnostic equipment includes:

a. volt meters,
b. ammeters,
c. ohmmeters
d. multimeters
e. battery testing equipment
f. dedicated and computer based diagnostic equipment
g. fault code readers
h. oscilloscopes
i. ADAS recalibration equipment

3. Tools and equipment include:

a. hand tools
b. special purpose tools
c. general workshop equipment

4. Diagnostic testing is defined as:

a. verify the fault
b. collect further information
c. evaluate the evidence
d. carry out further tests in a logical sequence
e. rectify the problem
f. check all systems

5. Testing techniques include:

a. voltage, resistance and current measuring
b. frequency measuring
c. visual
d. dedicated and computer-based testing
e. oscilloscope waveforms

6. Calibration environment includes:

a. targets
b. lighting
c. radar boards
d. static, dynamic and combinations of static and dynamic

7. Sensors include:

a. optical
b. radar
c. lidar
d. ultra-sonic
e. sound
f. GPS

8. Recalibrate to include:

a. static
b. dynamic
c. hybrid systems

9. ADAS system operation to include:

a. steering
b. braking
c. lane departure
d. driver assistance
e. parking

Scope Performance

Scope Knowledge





This section contains examples and explanations of some of the terms used but does not form part of the standard.

Rectification activities** are defined as:
A suitable replacement and recalibration of a component(s) that rectifies the fault(s) identified from the diagnostic activities carried out

Driver safety:
For example, night vision, glare-free high beam and pixel light, automatic parking, blind spot monitor, driver drowsiness detector, driver monitoring system, traffic sign recognition.

Pedestrian safety:
For example, pedestrian detection and warning systems. 

Motion/stability control:
For example, lane change assistance, hill descent control

Collision avoidance system:
For example, forward collision warning, surround view sound, night vision, lane departure warning, AEB (Autonomous emergency braking), adaptive cruise control and stability control.

Agreed timescales:
Examples include manufacturers’ recommended work times, job times set by the company or a job time agreed with the customer.

These can be any of the following – light vehicles, commercial vehicles, heavy vehicles,
Additionally, these vehicles may be SI, CI, Hybrid, Electric or Alternative fuel vehicles.

Links To Other NOS

External Links

Version Number


Indicative Review Date

31 Mar 2024





Originating Organisation


Original URN


Relevant Occupations

Heavy Vehicle Diagnostic Technician (Automotive), Light Vehicle Diagnostic Technician (Automotive), Light Vehicle Master Technician (Automotive), Mechanical, Electrical and Trim Technician (Automotive), Tyre Exhaust and Windscreen Fitters

SOC Code



ADAS; sensor; calibrate; re-calibrate; diagnostic