HVAC Electronic Diagnostics

Ing. Frank Bouman

Bosch Car Service Wout Bouman

The Netherlands

HVAC Electronic Diagnostics

• What do we need to solve an electronicproblem in a HVAC system?

• Which diagnostic equipment is suitable for a HVAC specialist?

• Example

HVAC Electronic Diagnostics

• What do we need to solve an electronicproblem in a HVAC system?

F13

Fix the car >>

HVAC Electronic Diagnostics

• What do we need to solve an electronicproblem in a HVAC system?

1. Listen carefully to the customer’s problem

HVAC Electronic Diagnostics

• What do we need to solve an electronicproblem in a HVAC system?

1. Listen carefully to the customer’s problem

2. Access to technical information

HVAC Electronic Diagnostics

• What do we need to solve an electronicproblem in a HVAC system?

1. Listen carefully to the customer’s problem

2. Access to technical information

HVAC Electronic Diagnostics

• What do we need to solve an electronicproblem in a HVAC system?

1. Listen carefully to the customer’s problem

2. Access to technical information

www.identyfix.com

HVAC Electronic Diagnostics

• What do we need to solve an electronicproblem in a HVAC system?

1. Listen carefully to the customer’s problem

2. Access to technical information

HVAC Electronic Diagnostics

• What do we need to solve an electronicproblem in a HVAC system?

1. Listen carefully to the customer’s problem

2. Access to technical information

3. Qualified diagnostic tools

HVAC Electronic Diagnostics

• What do we need to solve an electronicproblem in a HVAC system?

1. Listen carefully to the customer’s problem

2. Access to technical information

3. Qualified diagnostic tools

4. Qualified brains!

HVAC Electronic Diagnostics

• Which diagnostic equipment is suitable for a mobile HVAC specialist?

HVAC Electronic Diagnostics

• Which diagnostic equipment is suitable for a HVAC specialist?

HVAC Electronic Diagnostics

• Which diagnostic equipment is suitable for a HVAC specialist?

1. What is the level of training?

HVAC Electronic Diagnostics

• Which diagnostic equipment is suitable for a HVAC specialist?

1. What is the level of training?

2. Do you want to perform all types of jobs?

HVAC Electronic Diagnostics

• Which diagnostic equipment is suitable for a HVAC specialist?

1. What is the level of training?

2. Do you want to perform all types of jobs?

3. How much money do you want to spend?

HVAC Electronic Diagnostics

• Which diagnostic equipment is suitable for a HVAC specialist?

1. What is the level of training?

2. Do you want to perform all kind of jobs?

3. How much money do you want to spend?

4. Which vehicle brands do you work on?

HVAC Electronic Diagnostics

• Which diagnostic equipment is suitable for a HVAC specialist?

1. Multi-make tools

2. Specialized tools

3. OEM tools

HVAC Electronic Diagnostics

• Which diagnostic equipment is suitable for a HVAC specialist?

1. Multi-make tools

HVAC Electronic Diagnostics

• Which diagnostic equipment is suitable for a HVAC specialist?

1. Multi-make tools

• Big choice

• Each tool has its pros and cons

• Some contain tech info (e.g. wiring diagrams)

HVAC Electronic Diagnostics

• Which diagnostic equipment is suitable for a HVAC specialist?

2. Specialized tools

• Specialized in one vehicle make

• Offers (almost) the same as the OEM tool

• Expensive

HVAC Electronic Diagnostics

• Which diagnostic equipment is suitable for a HVAC specialist?

3. OEM tools

• Same diagnostic tool as franchised-dealer

• Complete coverage for one vehicle make

• Expensive

HVAC Electronic Diagnostics

• Example

Renault Megane II 1.5 DCI

Technical problem:

A/C system not working

HVAC Electronic Diagnostics

• Renault Megane II – System overview

The system is a factory fitted system featuringautomatic control.

Pre-selected temperature is attained or keptconstant by:

• Cooling by means of a refrigerant evaporator

• Heating by means of a heat exchanger

• Airflaps are actuated electrically

HVAC Electronic Diagnostics

• Renault Megane II – System overview

Functions of the HVAC control unit are:

• Detection of switch statuses and sensor signals

• Processing of information received

• Actuations of blower amplifier and air door actuators

HVAC Electronic Diagnostics

• Renault Megane II – System overview

There are interfaces with the following systems:

• Central Electronics 1 / UCH

• Engine Management Controller

HVAC Electronic Diagnostics

• Renault Megane II – Network analysis 1/3

Engine compartment CAN

Central Electronics 1

Transmission Engine ABS/ESPCentral

Electronics 2

HVAC Electronic Diagnostics

• Renault Megane II – Network analysis 2/3

Passenger compartment CANCentral

Electronics 1

Steering Lock HVAC

OBD Airbag

Combi-Instrument

Powersteering

Navigation

HVAC Electronic Diagnostics

• Renault Megane II – Network analysis 3/3

Multi-media CAN

RadioInstrument

ClusterNavigation

HVAC Electronic Diagnostics

• Renault Megane II – Network overview

Central Electronics 1

Transmission Engine ABS/ESPCentral

Electronics 2

1

HVACOBD

AirbagCombi-

Instrument

PowersteeringNavigation

Radio Navigation

HVAC Electronic Diagnostics

• Renault Megane II – Controller locationsA1.28 = Engine ManagementA4.1 = Airbag control unitA5.12 = A/C control unitA6.5 = Central Electronics 1A6.6 = Central Electronics 2E19 = RadioF1 = Fusebox

HVAC Electronic Diagnostics

• Renault Megane II: Reconnaissance

Which component controls the clutch?

HVAC Electronic Diagnostics

• Renault Megane II

Which component controls the clutch?

HVAC Electronic Diagnostics

• Renault Megane II

Which component controls the clutch?

With the help of an actuating test the clutch circuit can betested by means of a diagnostic tool.

HVAC Electronic Diagnostics

• Renault Megane II – Diagnosing the A/C control unit

HVAC Electronic Diagnostics

• Renault Megane II – Diagnosing the A/C control unit

HVAC Electronic Diagnostics

• Renault Megane II – Diagnosing the A/C control unit

HVAC Electronic Diagnostics

• Renault Megane II – Diagnosing the Central Electronics 1

HVAC Electronic Diagnostics

• Renault Megane II – Diagnosing the Central Electronics 1

HVAC Electronic Diagnostics

• Renault Megane II – Diagnosing the Central Electronics 1

HVAC Electronic Diagnostics

• Renault Megane II – Diagnosing the Engine Management

HVAC Electronic Diagnostics

• Renault Megane II – Diagnosing the Engine Management

HVAC Electronic Diagnostics

• Renault Megane II – Diagnosing the Engine Management

HVAC Electronic Diagnostics

• Renault Megane II – Diagnosing the Engine Management

HVAC Electronic Diagnostics

• Renault Megane II

What was wrong with this car?

HVAC Electronic Diagnostics

• Renault Megane II

What was wrong with this car?

After checking the refrigerant level, this turned out to be too low.

A system service was needed.

HVAC Electronic Diagnostics

• Renault Megane II

HVAC Electronic Diagnostics

• Renault Megane II – Tech tip

Finally the faultcode in engine management needed to be clearedwith the diagnostic tool.

HVAC Electronic Diagnostics

Multi-Make

• Actia Multi-Diag www.actia.com

• Autocom www.autocom.se

• Autodiagnos / Omnitec www.autodiagnos.com

• AVL http://www.avlditest.com/Diagnose.115.0.html

• Bosch KTS series www.bosch.de

• Brain-Bee www.brainbee.it

• DEC Superscan II www.decautomotive.com.ar

• Delphi http://iam.delphi.com/nl-nl/services/algemenediagnostischegereedschappen/

• Hanatech www.hanatech.net

• Hella Gutmann www.hella-gutmann.com

• Launch www.x431.com

• Snap-on http://buy1.snapon.com/catalog/catalog.asp?tool=diagnostics

• SPX Tecnotest www.tecnotest.com

• Tecnomotor www.tecnomotor.it

• Texa www.texa.com

• Würth http://www.wurth.co.uk/wow/diagnostics.php

HVAC Electronic DiagnosticsSpecialised

BMW• Autologic www.autologic.com• Bavarian Technic www.bavariantechnic.com• Carsoft www.carsoftsales.com

Fiat / Alfa-Romeo / Lancia• DEC Superscan II www.decautomotive.com.ar

Ford• DEC Superscan II www.decautomotive.com.ar

Jaguar• Autologic www.autologic.com

Land-Rover• Autologic www.autologic.com

Mercedes-Benz• Autologic www.autologic.com

Opel• OP-COM www.op-com.hu

Peugeot / Citroën• DEC Superscan II www.decautomotive.com.ar

Porsche• Autologic www.autologic.com• Durametric www.durametric.com

Renault• Autologic www.autologic.com• DEC Superscan II www.decautomotive.com.ar

Volkswagen / Audi / Seat / Skoda• Vag Com Diagnostic System www.ross-tech.com• Autologic www.autologic.com

Volvo• Autologic www.autologic.com

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HVAC Electronic DiagnosticsOEM Tech-info

• Alfa-Romeo http://www.technicalinformation.alfaromeo.com/• Audi http://www.erwin.audi.com/• BMW http://www.bmwservice.de/• Chrysler http://eu.techauthority.com/index.php• Citroen http://service.citroen.com/• Dacia http://www.infotech.renault.com/• Dodge http://eu.techauthority.com/index.php• Fiat http://www.technicalinformation.fiat.com/• Ford http://www.etis.ford.com/• Honda http://www.honda-techdata.com/• Hyundai http://www.hmaservice.com/• Jaguar http://www.jaguartechinfo.com/• Kia http://www.kiatechinfo.com/• Lancia http://www.technicalinformation.lancia.com/• Landrover http://www.landrovertechinfo.com/• Lexus http://techdoc.lexus-europe.com/• Mazda https://portal.mazdaeur.com/• Mercedes-Benz http://www.service-and-parts.net/• Mini http://www.bmwservice.de/• Mitsubishi http://www.mitsubishitechinfo.com/• Nissan https://eu.nissan.biz/• Opel https://www.gme-infotech.com/• Peugeot http://public.servicebox.peugeot.com/• Renault http://www.infotech.renault.com/• Saab http://saabtechinfo.com/• Seat http://erwin.seat.com/• Smart http://www.service-and-parts.net/• Subaru http://techinfo.subaru.com/• Suzuki http://www.suzukipitstop.com/• Toyota http://techdoc.toyota-europe.com/• Volkswagen http://erwin.volkswagen.de/• Volvo https://www.volvocarstechinfo.ford.com/vss/

HVAC Electronic DiagnosticsEU After-market Tech-info

• Aldoc http://www.aldoc.nl/

• Audacon http://www.audacon.de

• Autodata http://www.autodata.ltd.uk

• Bosch Esitronic http://aa.bosch.de/aa/de/esitronic/start/index.htm

• Vivid Workshopdata http://www.vivid-europe.com

USA Tech-info

• IATN http://www.iatn.net

• Identyfix https://www.identifix.com

• Ondemand5 http://www.ondemand5.com/

HVAC Electronic DiagnosticsTech forum

• Auto & Motor Techniek http://amtgarageforum.nl (Dutch)

• Ilexa http://www.ilexa.co.uk/forum

Wiki Tech-info

• Audi http://wiki.ross-tech.com/wiki/index.php/Diagnostic_Procedures#Audi

• BMW http://wiki.bavariantechnic.com

• Opel https://op-com.wikidot.com

• Seat http://wiki.ross-tech.com/wiki/index.php/Diagnostic_Procedures#Seat

• Skoda http://wiki.ross-tech.com/wiki/index.php/Diagnostic_Procedures#Skoda

• Volkswagen http://wiki.ross-tech.com/wiki/index.php/Diagnostic_Procedures#Volkswagen

HVAC Electronic Diagnostics

Thank you for your attention

Ing. Frank Bouman

frank@woutbouman.nl

Bosch Car Service Wout BoumanThe Netherlands