Electrical Fault Diagnosis Chester

Chester Fault code reading and diagnostics
Electrical faults investigated and repaired in the Chester area
Sensors
Electronically controlled sensors for air flow, temperature and oxygen tested and replaced
Electrical Components Replaced Chester
Alternators, starter motors, relays, wiper motors and most electrical components supplied and fitted Chester

Alternators Chester

Power Train Control Module (PCM) & Electronic Control Unit
The engine management system will take control of regulating the output voltage from the alternator by switching the field current on and off with millisecond precision
Belt Drive
Most alternators are belt driven from the engine and require minimal maintenance other than changing the drive belt at the appropriate service interval
Chester Alternator Repairs
Alternators generate an alternating curent (AC) rather than the direct current (DC) used by automotive electrical systems; in order to convert AC to DC an array of diodes and rectifiers take the negative part of the voltge and invert it: A voltage regulator then maintains the 13 to 15 Volt power ouput needed to charge the battery nd run the autoelectrical systems
Car Won't Start
Most ignition problems are caused by battery failure or poor connection: Other causes include starter motor,fuse or relay failure
Relays Chester
Relays are electric switches that typically use a small current or voltage in one circuit to close a switch that allows a much larger current to flow in a second circuit
Starter Motor Chester
When the ignition system is initiated; an electrical signal switches a relay-solenoid to send power to the starter motor - The starter motor then engages the drive gear to turn and start your engine
Battery Warning Light
Once your car has been started; if the battery warning light remains on then there could be a problem with the alternator-charging system or the battery itself

Engine Won't Turn Over

• Engine seized
• Dead or Flat Battery
• Faulty ignition switch
• Poor electrical Contact

Engine Turns Over but Won't Start

• ECM or PCM fuse blown or shorted
• Fuel pump relay faulty
• Immobiliser faulty
• Fuel Pump broken
• No Fuel
• Blown fuel pump fuse

Fuses Relays and Connections

Corroded Joints
Corroded joints can lead to connection problems and may be caused by water ingress or a mechanically loose joint sparking and oxidising
Blown Fuse
When parts of the electrical system fail then often the problem can be traced to a blown fuse or relay

Chester Electrical Testing and Fitting

Chester Electrical Components
Electrical faults repaired using OEM components - Critical sensors checked e.g. Lambda sensors, air flow meters etc
Chester Starter Motors
Replacement Chester Starter motors installed
Chester Performance Spares Fitted
OEM replacement parts fitted or upgraded with alternative performance parts such as suspension kits and air filters
Chester Autoelectrics - OBD & OBD II
Chester electrical faults diagnosed - OBD fault finding - engine fault codes checked & service lights reset - ECU problems diagnosed, key re-coding and CANBUS systems checked
Chester Engine Servicing & Repair
Engine repairs, cylinder head skimming, valves & pistons replaced Chester
Chester Cooling System
Replacement Chester radiators fitted, cooling system pipework inspected for leaks and cooling fluid replaced to keep your Chester engine at its optimal operating temperature
Chester Alternators
Replacement Chester alternators fitted
Chester Fuel Pumps
Often replaced at a milestone service if the fuel pump is operated by the Timing belt