Ebook Automotive air-conditioning and climate control systems - Steven Daly: Phần 2
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: Ebook Automotive air-conditioning and climate control systems - Steven Daly: Phần 2
Ebook Automotive air-conditioning and climate control systems - Steven Daly: Phần 2
4 Diagnostics and troubleshootingThe aim of this chapter is to:•Enable the reader to understand the range of techniques that can be used in diagnosing Ebook Automotive air-conditioning and climate control systems - Steven Daly: Phần 2g faults which affect system performance.4.1Initial vehicle inspectionThe initial vehicle inspection is not a checklist. Information from the customer on the symptoms, vehicle history and conditions upon which the fault occurs will allow the technician to be selective.'1110 technician should first t Ebook Automotive air-conditioning and climate control systems - Steven Daly: Phần 2ry to gather as much information as possible and assess if the symptom is normal behaviour (waler dripping from underneath the vehicle) or not. The teEbook Automotive air-conditioning and climate control systems - Steven Daly: Phần 2
chnician should then assess if the environment in which the fault occurs can be replicated. For example, a fault which occurs when the vehicle has bee4 Diagnostics and troubleshootingThe aim of this chapter is to:•Enable the reader to understand the range of techniques that can be used in diagnosing Ebook Automotive air-conditioning and climate control systems - Steven Daly: Phần 2 available to enable accurate fault detection. If conditions arc not right then the customer must be aware that an initial diagnostic period will be allocated to the vehicle to carry7 out a range of tests allowing a number of possible causes to be verified.Ihe technician should then ensure that they Ebook Automotive air-conditioning and climate control systems - Steven Daly: Phần 2 have access to all information required from the customer and for the vehicle. This includes fault finding charts, wiring diagrams, technical serviceEbook Automotive air-conditioning and climate control systems - Steven Daly: Phần 2
data, diagnostic procedures, technical service bulletins etc. lhis information may be as simple as a radio code in case the power to the vehicle is i4 Diagnostics and troubleshootingThe aim of this chapter is to:•Enable the reader to understand the range of techniques that can be used in diagnosing Ebook Automotive air-conditioning and climate control systems - Steven Daly: Phần 2.sections 3.8.3.9 and 3.10 for examples of information). Manufacturers also have software-based fault diagnostic procedures which direct the technician through guided procedures. Technical helplines are also available.Note - if the technician is inexperienced, then use the inspection as a checklist. Ebook Automotive air-conditioning and climate control systems - Steven Daly: Phần 2Simple inspection routineCHECK CONDENSER FINS FOR BLOCKAGE OR DAMAGE•If the fins are clogged, wash them with water.Note - be careful not to damage theEbook Automotive air-conditioning and climate control systems - Steven Daly: Phần 2
fins.CHECK THE POLLEN FILTER FOR SERVICE CONDITIONDiagnostics and troubleshooting 265MAKE SURE THAT DRIVE BELT IS INSTALLED CORRECTLY•Check that the 4 Diagnostics and troubleshootingThe aim of this chapter is to:•Enable the reader to understand the range of techniques that can be used in diagnosing Ebook Automotive air-conditioning and climate control systems - Steven Daly: Phần 2r installing the drive belt, check lhal it fits properly in (he ribbed grooves.CHECK ENGINE COOLANT LEVEL•('heck coolant level. If unsatisfactory then test coolant system.START ENGINE AND TURN ON A/C SWITCH•('heck that the A/C operates at each position of the blower switch. If blower docs not operat Ebook Automotive air-conditioning and climate control systems - Steven Daly: Phần 2e, check electrical circuits.CHECK MAGNETIC CLUTCH OPERATION•If magnetic clutch does not engage, check system pressure with gauges and power supply anEbook Automotive air-conditioning and climate control systems - Steven Daly: Phần 2
d operation of A/C control, c.g. electrical operation of low pressure switch.CHECK THAT IDLE INCREASES•When the magnetic clutch engages, engine rpm sh4 Diagnostics and troubleshootingThe aim of this chapter is to:•Enable the reader to understand the range of techniques that can be used in diagnosing Ebook Automotive air-conditioning and climate control systems - Steven Daly: Phần 2ER ARE HOTCHECK I 'III-: PERFORMANCE OFTI IE A/C CONTROLS•Check the air distribution control, vary the direction of the air distribution and check air flow. Vary air temperature to test blend operation. Use a temperature probe to verify temperature range (4-60 C) and air direction (panel, floor, fac Ebook Automotive air-conditioning and climate control systems - Steven Daly: Phần 2e).'I11C initial vehicle inspection should direct the technician to one of the following:1A performance diagnostic test on the A'C operation:•A/C perfEbook Automotive air-conditioning and climate control systems - Steven Daly: Phần 2
ormance test.•Pressure gauge analysis.•Temperature measurement on A/C components.4 Diagnostics and troubleshootingThe aim of this chapter is to:•Enable the reader to understand the range of techniques that can be used in diagnosing4 Diagnostics and troubleshootingThe aim of this chapter is to:•Enable the reader to understand the range of techniques that can be used in diagnosingGọi ngay
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