Curriculum
Module 05intermediate
Vehicle Circuits
Apply electrical testing to windows, mirrors, locking, lighting, blowers, pumps, fans and wipers.
Lessons
08
Estimated time
280 min
Completed
00/08
By the end of this module
Trace complete real-vehicle circuits and isolate faults across feeds, grounds, controls and loads.
Lessons
8 total
- 27Electric windows from switch to motorWindow does nothing from one switch, but works from another — or both switches appear dead.Members only35 min
- 28Electric mirrorsBoth mirrors are dead. Does that really mean both mirror motors failed?Members only35 min
- 29Central locking and keyless handlesVehicle keeps waking up while parked. Could a door handle be repeatedly telling the car someone is touching it?Members only35 min
- 30Exterior lighting and strange voltagesLamp is off but your meter still shows 7 V. Is something feeding it when it shouldn’t?Members only35 min
- 31Blower motor diagnosisBlower speed surges randomly, then sits at a steady low speed when the control panel is unplugged.Members only35 min
- 32Fuel pump electrical diagnosisNo fuel pressure. Before ordering a pump, prove whether it is being asked to run and whether it can draw current.Members only35 min
- 33Cooling fan circuitsEngine overheats but the fan works when directly powered. What controls the rest of the chain?Members only35 min
- 34Wipers, park circuits and intelligent motorsWipers move but stop halfway up the screen when switched off.Members only35 min