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?
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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 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?
With the help of an actuating test the clutch circuit can betested by means of a diagnostic tool.
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 – 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
Coverage Depth Costs €€€€€ € € €
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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
Bosch Car Service Wout BoumanThe Netherlands
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